# Patent

## Title
Short interfering ribonucleic acid (siRNA) for oral administration

## Abstract

Short interfering ribonucleic acid (siRNA) for oral administration, said siRNA comprising two separate RNA strands that are complementary to each other over at least 15 nucleotides, wherein each strand is 49 nucleotides or less, and wherein at least one of which strands contains at least one chemical modification.

## Background
PRIORITY INFORMATION
This U.S. application is a divisional application of Ser. No. 13/651,808, filed Oct. 15, 2012, which is a divisional application claiming priority to U.S. Pat. No. 8,344,128, issued Jan. 1, 2013, which is a divisional application claiming priority U.S. PCT application Ser. No. 12/299,396, filed 2 May 2007, which claims priority to PCT Application Serial No. PCT/EP07/003867, filed 2 May 2007, which claims priority to GB Application Serial No. 0608838.9, filed 4 May 2006, the contents of which are incorporated herein by reference in their entirety.


BACKGROUND
RNA interference initially discovered in plants as Post-Transcriptional Gene Silencing (PTGS), is a highly conserved mechanism triggered by double-stranded RNA (dsRNA) and able to down regulate transcript of genes homologous to the dsRNA1. The dsRNA is first processed by Dicer into short duplexes of 21-23 nt, called short interfering RNAs (siRNAs)2. Incorporated in RNA-induced silencing complex (RISC) they are able to mediate gene silencing through cleavage of the target mRNA in the center of the region of homology by Argonaute 2, a component of RISC3. In 2001, Elbashir et al4 demonstrated that the direct introduction of synthetic siRNAs would mediate RNA interference gene silencing in drosophila but also in mammalian cells. Since then, siRNA-mediated gene silencing has become a powerful and widely-used molecular biology tool in both target identification target validation studies. Use of siRNAs for gene silencing in animal studies has been described in a limited amount of animal models. Unmodified siRNAs were delivered locally in the eye5, intrathecally or intracerebellarly in the central nervous system6, and intranasally for the inhibition of respiratory viruses7. Intravenous hydrodynamic tail vein injection of unmodified siRNAs has also been studied. This approach allows a rapid delivery, mainly to the liver8. A very limited number of studies have been reported on the systemic administration of unmodified siRNAs. Duxbury et al9 administered intravenously unmodified siRNAs targeting Focal Adhesion Kinase to an orthotopic tumor xenograft mice model, and observed a tumor growth inhibition as well as a chemosensitization to gemcitabine. Soutscheck et al reported the systemic use of highly chemically modified siRNAs for the endogeneous silencing Apolipoprotein B. Intraperitoneal administration of most anti-ApoB siRNA at the high dose of 50 mg/kg reduced ApoB protein level and Lipoprotein concentration10. Despite these examples, in vivo use of siRNAs upon systemic delivery requires improvements in order to make this technology widely applicable for target validation or therapeutic applications. Indeed, unmodified siRNAs are subject to enzymatic digestion, mainly by nucleases abundant in the blood stream. In order to improve pharmacological properties of siRNAs several groups investigated chemical modification of these reagents. While the approaches described are very different among themselves and that no systematic study was yet performed, an overview of the results allows to determine the tolerance of siRNAs to chemical modifications. Several chemistries such as phosphorothioates11 or boranophosphates12, 2′-O-Methyl13, 2′-O-allyl14, 2′-methoxyethyl (MOE) and 2′-deoxyfluoronucleotides15 or Locked Nucleic Acids (LNA)16 have been investigated. These studies highlighted that tolerance for modification is not only chemistry-dependent, but also position-dependent.
The present invention provides a minimally modified siRNA with improved pharmacological properties. The minimally modified siRNAs are 19 bp double-stranded RNA modified on the 3′-end of each strand in order to prevent 3′-exonuclease digestion: the 3′-dideoxynucleotide overhang of 21-nt siRNA has been replaced by a universal 3′-hydroxypropyl phosphodiester moiety and the modification of the two first base-pairing nucleotides on 3′-end of each strand further enhances serum stability. Applied intraperitoneally or orally to adult mice, the modified siRNAs displayed higher potency in a growth factor induce angiogenesis model which correlates with their increased serum stability.
SUMMARY
In one aspect, the present invention provides a short interfering ribonucleic acid (siRNA) for oral administration, said siRNA comprising two separate RNA strands that are complementary to each other over at least 15 nucleotides, wherein each strand is 49 nucleotides or less, and wherein at least one of which strands contains at least one chemical modification.
In one embodiment, the siRNA comprises at least one modified nucleotide.
In another embodiment, the siRNA comprises at least one 3′ end cap.
In another embodiment, said modified nucleotide is selected from among 2′ alkoxyribonucleotide, 2′ alkoxyalkoxy ribonucleotide, a locked nucleic acid ribonucleotide (LNA), 2′-fluoro ribonucleotide, morpholino nucleotide.
In another embodiment, said modified nucleotide is selected from among nucleotides having a modified internucleoside linkage selected from among phosphorothioate, phosphorodithioate, phosphoramidate, boranophosphonoate, and amide linkages.
In another embodiment, said two RNA strands are fully complementary to each other.
In another embodiment, said siRNA comprises a 1 to 6 nucleotide overhang on at least one of the 5′ end or 3′ end.
In another embodiment, the siRNA contains at least one 3′ cap, which is chemical moiety conjugated to the 3′ end via the 3′ carbon and is selected from among compounds of Formula I:




    
    
        wherein
        X is O or S
        R1 and R2 are independently OH, NH2, SH, alkyl, aryl, alkyl-aryl, aryl-alkyl, where alkyl, aryl, alkyl-aryl, aryl-alkyl can be substituted by additional heteroatoms and functional groups, preferably a heteroatom selected from the group of N, O, or S or a functional group selected from the group OH, NH2, SH, carboxylic acid or ester;
        or R1 and R2 may be of formula Y—Z where Y is O, N, S and Z is H, alkyl, aryl, alkyl-aryl, aryl-alkyl, where alkyl, aryl, alkyl-aryl, aryl-alkyl can be substituted by additional heteroatoms, preferably a heteroatom selected from the group of N, O, or S.
    
    


In another embodiment, the siRNA contains at least one strand which is complementary over at least 15 nucleotides to the mRNA or pre-mRNA of VEGFR-1, VEGFR-2, VEGFR3, Tie2, bFGFR, IL8RA, IL8RB, Fas, or IGF2R.
In another embodiment, the siRNA contains at least one strand which comprises a sequence selected from SEQ ID NO 1-900.
In another embodiment, the siRNA is chosen from the group consisting of SEQ ID NO 901-930.
In another embodiment, the siRNA has a stability in a standard gastric acid assay that is greater than an unmodified siRNA with the same nucleotide sequence.
In another embodiment, the siRNA has a stability in a standard gastric acid assay that is greater than or equal to 50% after 30 minutes exposure.
In another embodiment, the siRNA has a stability in a standard serum assay greater than unmodified siRNA.
In another embodiment, the siRNA has a stability in a standard serum assay that is greater than or equal to 50% after 30 minutes exposure.
In another embodiment, the siRNA has a stability in a standard intestinal lavage assay that is greater than unmodified siRNA.
In another embodiment, the siRNA has an enhanced oral bioavailability compared to an unmodified siRNA of the same nucleotide sequence.
In one aspect, the invention provides a pharmaceutical composition comprising an siRNA with any one or more of the above properties.
In another aspect, the invention provides an siRNA with any one or more of the above properties for use as a medicament.
In another aspect, the invention provides the use of an siRNA with any one or more of the above properties in the preparation of a medicament for treating an angiogenic disorder.
In another aspect, the invention provides the use of an siRNA with any one or more of the above properties to inhibit an angiogenic process in vitro.



BRIEF DESCRIPTION OF THE DRAWINGS
FIGS. 1a, 1b, 1c, 1d and 1e: Metabolic degradation of unmodified siRNA pGl3-siRNA (wild-type siRNA in mouse serum); a-c) Ion Exchange-HPLC analysis of unmodified siRNAs after incubation in mouse serum for 0′, 30′ and 180′; After 30′ of incubation at 37° C., major peak in the Ion Exchange HPLC was isolated and re-injected in LC-MS, d) table of detected molecular weights and their assignments; e) ESI-MS spectrum
FIG. 2: illustration of four double-stranded RNA formats: wild-type (or unmodified) siRNA. MOE o/h siRNA, C3-siRNA and C3-MOE siRNA.
FIG. 3: Stability of siRNA in 3 different formats in mouse gastric acid. Samples were incubated at 37° C. in mouse gastric acid at a 2 micromolar concentration. Disappearance of parent compound was followed over a 2-6 hours period by quantifying the parent compound band.

    Lane 1-7: wild-type siRNA in gastric acid at t=0, 5, 10, 15, 30, 60 and 120 min
    Lane 8: ds RNA ladder (30, 21, 19, 16, 13, 10 bp)
    Lane 9-15: C3 siRNA in gastric acid at t=0, 5, 10, 15, 30, 60 and 120 min
    Lane 16: ds RNA ladder (30, 21, 19, 16, 13, 10 bp)
    Lane 17-24: C3-MOE siRNA in gastric acid at t=0, 5, 10, 15, 30, 60 and 120 min


FIG. 4: Stability of siRNA in 4 different formats in intestinal lavage. Samples were incubated at 37° C. in liver microsomes at a 5 micromolar concentration.
(From left to right)


    Lane 1: ds RNA ladder (30, 21, 19, 16, 13, 10 bp)
    Lane 2-7: wild-type siRNA in intestinal lavage at t=0, 15, 30, 60, 180 and 360 min
    Lane 8-13: moe o/h siRNA in intestinal lavage at t=0, 15, 30, 60, 180 and 360 min
    Lane 14-19: C3 siRNA in intestinal lavage at t=0, 15, 30, 60, 180 and 360 min
    Lane 20-25: C3-MOE siRNA in intestinal lavage at t=0, 15, 30, 60, 180 and 360 min


FIG. 5: Stability of siRNA in 4 different formats in liver microsomes. Samples were incubated at 37° C. in intestinal fluid from rat intestinal lavage at a 2 micromolar concentration.
(From left to right)


    Lane 1: ds


FIG. 6: Stability of siRNA in 4 different formats in mouse serum. Samples were incubated at 37° C. in mouse serum at a 2 micromolar concentration. Disappearance of parent compound was followed over a 6 hours period by quantifying the parent compound band.
(From left to right)


    Lane 1: ds RNA ladder (30, 21, 19, 16, 13, 10 bp) RNA ladder (30, 21, 19, 16, 13, 10 bp)
    Lane 2: wild-type siRNA untreated
    Lane 3: moe o/h siRNA untreated
    Lane 4: C3 siRNA untreated
    Lane 5: C3-MOE siRNA untreated
    Lane 6-9: same as 2-5 in liver microsomes t=0
    Lane 10-13: same as 2-5 in liver microsomes t=60′
    Lane 14-17: same as 2-5 in supernatant S12 t=0
    Lane 18-21: same as 2-5 in supernatant S12 t=60′
    Lane 2-7: wild-type siRNA in mouse serum at t=0, 15, 30, 60, 180 and 360 min
    Lane 8-13: moe o/h siRNA in mouse serum at t=0, 15, 30, 60, 180 and 360 min
    Lane 14-19: C3 siRNA in mouse serum at t=0, 15, 30, 60, 180 and 360 min
    Lane 20-25: C3-MOE siRNA mouse serum at t=0, 15, 30, 60, 180 and 360 min


FIG. 7: Characterization in cellulo of 3 formats of anti-VEGFR2 siRNA (2 independent sequences). Wild-type siRNA, C3-siRNA and C3-MOE siRNA were transfected into MS1 cells at three concentrations (1, 5, 10 nM). Silencing potency was assessed by measuring VEGFR2 cell surface level by FACS.
FIGS. 8a and 8b: In vivo testing of wild-type siRNA, C3-siRNA and C3-Moe siRNA in a growth factor induced angiogenesis “Agar Chamber” mouse model. FIG. 8a shows the results of controls, unmodified VEGFR2 siRNA and C3 modified VEGFR2 siRNA at 1, 5 and 25 micrograms per mouse per day. FIG. 8b shows controls, C3 modified VEGFR2 siRNA and of C3-MOE VEGFR2 siRNA at 0.2, 1 and 5 micrograms per mouse per day. In each case pools of 2 anti-VEGFR2 siRNAs were given daily intraperitoneally for three days.
FIGS. 9a and 9b: In vivo testing of anti-VEGFR2 C3-MOE siRNA given intraperitoneally (i.p.) in a B16 homograft melanoma tumor mouse model at 5 and 20 micrograms per mouse per day. FIG. 9a shows that i.p. treatment with modified VEGFR2 siRNA significantly reduces tumour development. FIG. 9b also shows that i.p. injection of VEGFR2 siRNA at 20 ug per mouse results in significant inhibition of tumour growth.
FIG. 10: In vivo testing of C3-MOE siRNA in a growth factor induced angiogenesis mouse model. anti-VEGFR2 siRNAs were given daily orally for three days at 20 micrograms per mouse per day.
FIGS. 11a and 11b: In vivo testing of C3-MOE siRNA in a growth factor induced angiogenesis mouse model. anti-Tie2 siRNAs were given daily intraperitoneally (1 and 0.2 micrograms per mouse per day) or orally (20 and 5 micrograms per mouse per day) for three days. FIG. 11a: weight of excised tissue; FIG. 11b: Tie2 protein knock-down



DETAILED DISCLOSURE OF THE INVENTION
The present invention relates to compositions and methods for treating angiogenic disorders in a mammal. Specifically, the invention relates to small-interfering RNA (“siRNA”) which may be used to treat angiogenic disorders upon oral administration to a mammal.
Angiogenesis targets in vascular endothelial cells include the following targets/genes: VEGFR-1 (GenBank Accession # AF06365); VEGFR-2 (GenBank Accession # AF063658); VEGFR-3 (GenBank Accession # (NM_002020); Tie2 (TEK) (GenBank Accession # NM_000459); bFGFR (GenBank Accession # M60485); IL8RA (GenBank Accession # L19591); IL8RB (GenBank Accession # L19593); Fas (GenBank Accession # X89101); IGF2R (GenBank Accession # NM_000876).
The siRNA molecules according to the present invention mediate RNA interference (“RNAi”). The term “RNAi” is well known in the art and is commonly understood to mean the inhibition of one or more target genes in a cell by siRNA with a region which is complementary to the target gene. Various assays are known in the art to test siRNA for its ability to mediate RNAi (see for instance Elbashir et al., Methods 26 (2002), 199-213). The effect of the siRNA according to the present invention on gene expression will typically result in expression of the target gene being inhibited by at least 10%, 33%, 50%, 90%, 95% or 99% when compared to a cell not treated with the RNA molecules according to the present invention.
“siRNA” or “small-interfering ribonucleic acid” according to the invention has the meanings known in the art, including the following aspects. The siRNA consists of two strands of ribonucleotides which hybridize along a complementary region under physiological conditions. The strands are separate but they may be joined by a molecular linker in certain embodiments. The individual ribonucleotides may be unmodified naturally occurring ribonucleotides, unmodified naturally occurring deoxyribonucleotides or they may be chemically modified or synthetic as described elsewhere herein.
The siRNA molecules in accordance with the present invention comprise a double-stranded region which is substantially identical to a region of the mRNA of the target gene. A region with 100% identity to the corresponding sequence of the target gene is suitable. This state is referred to as “fully complementary”. However, the region may also contain one, two or three mismatches as compared to the corresponding region of the target gene, depending on the length of the region of the mRNA that is targeted, and as such may be not fully complementary. In an embodiment, the RNA molecules of the present invention specifically target one given gene. In order to only target the desired mRNA, the siRNA reagent may have 100% homology to the target mRNA and at least 2 mismatched nucleotides to all other genes present in the cell or organism. Methods to analyze and identify siRNAs with sufficient sequence identity in order to effectively inhibit expression of a specific target sequence are known in the art. Sequence identity may be optimized by sequence comparison and alignment algorithms known in the art (see Gribskov and Devereux, Sequence Analysis Primer, Stockton Press, 1991, and references cited therein) and calculating the percent difference between the nucleotide sequences by, for example, the Smith-Waterman algorithm as implemented in the BESTFIT software program using default parameters (e.g., University of Wisconsin Genetic Computing Group).
Another factor affecting the efficiency of the RNAi reagent is the target region of the target gene. The region of a target gene effective for inhibition by the RNAi reagent may be determined by experimentation. A suitable mRNA target region would be the coding region. Also suitable are untranslated regions, such as the 5′-UTR, the 3′-UTR, and splice junctions. For instance, transfection assays as described in Elbashir S. M. et al, 2001 EMBO J., 20, 6877-6888 may be performed for this purpose. A number of other suitable assays and methods exist in the art which are well known to the skilled person.
The length of the region of the siRNA complementary to the target, in accordance with the present invention, may be from 10 to 100 nucleotides, 12 to 25 nucleotides, 14 to 22 nucleotides or 15, 16, 17 or 18 nucleotides. Where there are mismatches to the corresponding target region, the length of the complementary region is generally required to be somewhat longer.
Because the siRNA may carry overhanging ends (which may or may not be complementary to the target), or additional nucleotides complementary to itself but not the target gene, the total length of each separate strand of siRNA may be 10 to 100 nucleotides, 15 to 49 nucleotides, 17 to 30 nucleotides or 19 to 25 nucleotides.
The phrase “each strand is 49 nucleotides or less” means the total number of consecutive nucleotides in the strand, including all modified or unmodified nucleotides, but not including any chemical moieties which may be added to the 3′ or 5′ end of the strand. Short chemical moieties inserted into the strand are not counted, but a chemical linker designed to join two separate strands is not considered to create consecutive nucleotides.
The phrase “a 1 to 6 nucleotide overhang on at least one of the 5′ end or 3′ end” refers to the architecture of the complementary siRNA that forms from two separate strands under physiological conditions. If the terminal nucleotides are part of the double-stranded region of the siRNA, the siRNA is considered blunt ended. If one or more nucleotides are unpaired on an end, an overhang is created. The overhang length is measured by the number of overhanging nucleotides. The overhanging nucleotides can be either on the 5′ end or 3′ end of either strand.
The siRNA according to the present invention confer a high in vivo stability suitable for oral delivery by including at least one modified nucleotide in at least one of the strands. Thus the siRNA according to the present invention contains at least one modified or non-natural ribonucleotide. A lengthy description of many known chemical modifications are set out in published PCT patent application WO 200370918 and will not be repeated here. Suitable modifications for oral delivery are more specifically set out in the Examples and description herein. Suitable modifications include, but are not limited to modifications to the sugar moiety (i.e. the 2′ position of the sugar moiety, such as for instance 2′-O-(2-methoxyethyl) or 2′-MOE) (Martin et al., Helv. Chim. Acta, 1995, 78, 486-504) i.e., an alkoxyalkoxy group) or the base moiety (i.e. a non-natural or modified base which maintains ability to pair with another specific base in an alternate nucleotide chain). Other modifications include so-called ‘backbone’ modifications including, but not limited to, replacing the phosphoester group (connecting adjacent ribonuclotides with for instance phosphorothioates, chiral phosphorothioates or phosphorodithioates). Finally, end modifications sometimes referred to herein as 3′ caps or 5′ caps may be of significance. As illustrated in Table 1, caps may consist of simply adding additional nucleotides, such as “T-T” which has been found to confer stability on an siRNA. Caps may consist of more complex chemistries which are known to those skilled in the art.
In an embodiment used in the Examples below, the 3′ cap is a chemical moiety conjugated to the 3′ end via the 3′ carbon and is selected from among compounds of Formula I:




wherein

    X is O or S
    R1 and R2 are independently OH, NH2, SH, alkyl, aryl, alkyl-aryl, aryl-alkyl, where alkyl, aryl, alkyl-aryl, aryl-alkyl can be substituted by additional heteroatoms and functional groups, preferably a heteroatom selected from the group of N, O, or S or a functional group selected from the group OH, NH2, SH, carboxylic acid or ester;
    or R1 and R2 may be of formula Y—Z where Y is O, N, S and Z is H, alkyl, aryl, alkyl-aryl, aryl-alkyl, where alkyl, aryl, alkyl-aryl, aryl-alkyl can be substituted by additional heteroatoms, preferably a heteroatom selected from the group of N, O, or S.


Examples of modifications on the sugar moiety include 2′ alkoxyribonucleotide, 2′ alkoxyalkoxy ribonucleotide, locked nucleic acid ribonucleotide (LNA), 2′-fluoro ribonucleotide, morpholino nucleotide.
The internucleoside linkage may also be modified. Examples of internucleoside linkage include phosphorothioate, phosphorodithioate, phosphoramidate, and amide linkages.
R1 may be OH.
R1 and R2 together may comprise from 1 to 24 C-atoms, from 1 to 12 C-atoms, from 2 to 10 C-atoms, from 1 to 8 or from 2 to 6 C-atoms. In another embodiment, R1 and R2 are independently OH, lower alkyl, lower aryl, lower alkyl-aryl, lower aryl-alkyl, where lower alkyl, lower aryl, lower alkyl-aryl, lower aryl-alkyl can be substituted by additional heteroatoms and functional groups as defined above. In another embodiment, R1 and R2 are not both OH.
The term “lower” in connection with organic radicals or compounds means a compound or radical which may be branched or unbranched with up to and including 7 carbon atoms, preferably 1-4 carbon atoms. Lower alkyl represents, for example, methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, n-pentyl and branched pentyl, n-hexyl and branched hexyl.
Examples of alkoxys include O-Met, O-Eth, O-prop, O-but, O-pent, O-hex.
Methods for the synthesis of siRNA, including siRNA containing at least one modified or non-natural ribonucleotides are well known and readily available to those of skill in the art. For example, a variety of synthetic chemistries are set out in published PCT patent applications WO2005021749 and WO200370918, both incorporated herein by reference. The reaction may be carried out in solution or, preferably, on solid phase or by using polymer supported reagents, followed by combining the synthesized RNA strands under conditions, wherein a siRNA molecule is formed, which is capable of mediating RNAi.
The present invention provides an siRNA containing at least one modified nucleotide which is suitable for oral delivery. In functional terms this means siRNA will have suitable pharmacokinetics and biodistribution upon oral administration to achieve delivery to the target tissue of concern. In particular this requires serum stability, lack of immune response, and drug like behaviour. Many of these features of siRNA can be anticipated based on the standard gastric acid assays and standard serum assays disclosed elsewhere herein.
In another aspect, the present invention provides methods for the inhibition of a target gene comprising introducing into a cell and siRNA according to the present invention, which is capable of inhibiting at least one target gene by RNAi. Also, more than one species of siRNA, which are each specific for another target region, may be introduced into a cell at the same time or sequentially.
The present invention is not limited to any type of target gene or nucleotide sequence. For example, the target gene can be a cellular gene, an endogenous gene, a pathogen-associated gene, a viral gene or an oncogene. Angiogenic genes are of particular importance to the invention because some of the Examples highlight that the orally delivered siRNA of the invention may accumulate at sites of vasculogenesis, neovascularization or angiogenesis. An updated listing of angiogenic genes at these sites of particular interest for the invention are listed in AngioDB: database of angiogenesis and angiogenesis-related molecules Tae-Kwon Sohn, Eun-Joung Moonl, Seok-Ki Leel, Hwan-Gue Cho2 and Kyu-Won Kim3, Nucleic Acids Research, 2002, Vol. 30, No. 1 369-371 and online at http://angiodb.snu.ac.kr/. Genes of particular significance have been analyzed in detail and are set out elsewhere herein.
In another aspect, the invention also provides a kit comprising reagents for inhibiting expression of a target gene in a cell, wherein said kit comprises dsRNA according to the present invention. The kit comprises at least one of the reagents necessary to carry out the in vitro or in vivo introduction of the dsRNA according to the present invention to test samples or subjects. In a preferred embodiment, such kits also comprise instructions detailing the procedures by which the kit components are to be used.
“Treatment of an angiogenic disorder” as used in this disclosure means use of a modified siRNA of the invention in a pharmaceutical composition for the treatment of diseases involving the physiological and pathological processes of neovascularization, vasculogenesis and/or angiogenesis. As such, these pharmaceutical compositions are useful for treating diseases, conditions and disorders that require inhibition of neovascularization, vasculogenesis or angiogenesis, including but not limited to cancer tumour growth and metastasis, neoplasm, ocular neovascularization (including macular degeneration, diabetic retinopathy, ischemic retinopathy, retinopathy of prematurity, choroidal neovascularization), rheumatoid arthritis, osteoarthritis, chronic asthma, spectic shock, inflammatory diseases, synovitis, bone and cartilage destruction, pannus growth, osteophyte formation, osteomyelitis, psoriasis, obesity, haemangioma, Kaposi's sarcoma, atherosclerosis (including atherosclerotic plaque rupture), endometriosis, warts, excess hair growth, scar keloids, allergic oedema, dysfunctional uterine bleeding, follicular cysts, ovarian hyperstimulation, endometriosis, osteomyelitis, inflammatory and infectious processes (hepatitis, pneumonia, glumerulonephtritis), asthma, nasal polyps, transplantation, liver regeneration, leukomalacia, thyroiditis, thyroid enlargement, lymphoproliferative disorders, haematologic malignancies, vascular malformations, and pre-eclampsia.
As used herein, “treatment” means an action taken to inhibit or reduce a process of a disease, disorder or condition, to inhibit or reduce a symptom of a disease, disorder or condition, or to prophylactically prevent the onset or further development of a disease, disorder or condition. “Treat” is the cognitive verb thereof.
An effective dose of the therapeutic agent of the invention is that dose required to treat a disease state. The effective dose depends on the type of disease, the composition used, the route of administration, the type of mammal being treated, the physical characteristics of the specific mammal under consideration, concurrent medication, and other factors that those skilled in the medical arts will recognize. Generally, an amount between 0.1 mg/kg and 100 mg/kg body weight/day of siRNA is administered dependent upon potency. The nucleic acid molecules of the invention and formulations thereof can be administered orally, topically, parenterally, by inhalation or spray, or rectally in dosage unit formulations containing conventional non-toxic pharmaceutically acceptable carriers, adjuvants and/or vehicles. The term parenteral as used herein includes percutaneous, subcutaneous, intravascular (e.g., intravenous), intramuscular, intraperitoneal, or intrathecal injection, or infusion techniques and the like. In addition, there is provided a pharmaceutical formulation comprising a nucleic acid molecule of the invention and a pharmaceutically acceptable carrier. One or more nucleic acid molecules of the invention can be present in association with one or more non-toxic pharmaceutically acceptable carriers and/or diluents and/or adjuvants, and if desired other active ingredients. The pharmaceutical compositions containing nucleic acid molecules of the invention can be in a form suitable for oral use, for example, as tablets, troches, lozenges, aqueous or oily suspensions, dispersible powders or granules, emulsion, hard or soft capsules, or syrups or elixirs.
Compositions intended for oral use can be prepared according to any method known to the art for the manufacture of pharmaceutical compositions and such compositions can contain one or more such sweetening agents, flavoring agents, coloring agents or preservative agents in order to provide pharmaceutically elegant and palatable preparations. Tablets contain the active ingredient in admixture with non-toxic pharmaceutically acceptable excipients that are suitable for the manufacture of tablets. These excipients can be, for example, inert diluents; such as calcium carbonate, sodium carbonate, lactose, calcium phosphate or sodium phosphate; granulating and disintegrating agents, for example, corn starch, or alginic acid; binding agents, for example starch, gelatin or acacia; and lubricating agents, for example magnesium stearate, stearic acid or talc. The tablets can be uncoated or they can be coated by known techniques. Formulations for oral use can also be presented as hard gelatin capsules wherein the active ingredient is mixed with an inert solid diluent, for example, calcium carbonate, calcium phosphate or kaolin, or as soft gelatin capsules wherein the active ingredient is mixed with water or an oil medium, for example peanut oil, liquid paraffin or olive oil. Aqueous suspensions contain the active materials in a mixture with excipients suitable for the manufacture of aqueous suspensions.
Oral administration of the compositions of the invention include all standard techniques for administering substances directly to the stomach or gut, most importantly by patient controlled swallowing of the dosage form, but also by other mechanical and assisted means of such delivery.
Dosage levels of the order of from about 0.1 mg to about 140 mg per kilogram of body weight per day are useful in the treatment of the above-indicated conditions (about 0.5 mg to about 7 g per subject per day). The amount of active ingredient that can be combined with the carrier materials to produce a single dosage form varies depending upon the host treated and the particular mode of administration. Dosage unit forms generally contain between from about 1 mg to about 500 mg of an active ingredient. It is understood that the specific dose level for any particular subject depends upon a variety of factors including the activity of the specific compound employed, the age, body weight, general health, sex, diet, time of administration, route of administration, and rate of excretion, drug combination and the severity of the particular disease undergoing therapy.
Therapeutic effect of the therapeutic agents of the invention may be enhanced by combination with other agents. Typically such other agents will include agents known for use in treating similar diseases, such as angiogenic disorders. Alternatively, such agents may be used to reduce side-effects or unwanted effects caused by the therapeutic agents of the invention.
The siRNA of the invention also have important research uses. One such study includes research into an angiogenic process in vitro. By “angiogenic process in vitro” is meant any process for studying angiogenesis or vasculogenesis which does not employ a whole animal. As such, in vitro or ex vivo methods and assays which study the steps of the angiogenic process using markers or indicators of angiogenesis are included hereby.
RNA Strand Nucleotide Sequences
The siRNA strand sequences identified in Table 1 have been identified as suitable siRNA sequences against the following targets: VEGFR-1 (GenBank Accession # AF06365); VEGFR-2 (GenBank Accession # AF063658); VEGFR-3 (GenBank Accession # (NM_002020); Tie2 (TEK) (GenBank Accession # NM_000459); bFGFR (GenBank Accession # M60485); IL8RA (GenBank Accession # L19591); IL8RB (GenBank Accession # L19593); Fas (GenBank Accession # X89101); IGF2R (GenBank Accession # NM 000876).







TABLE 1 







siRNAs against human VEGFR-1, VEGFR-2, VEGFR-3, Tie2, bFGFR,


IL8RA, IL8RB, Fas, IGF2R















SEQ

SEQ


Target


ID

ID


Name
pos
siRNA guide sequence
NO
siRNA complement
NO















VEGFR-1
1731
UAUAAGAACUUGUUAACUGTG
1
CAGUUAACAAGUUCUUAUATT
451


 


VEGFR-1
1021
UACGGUUUCAAGCACCUGCTG
2
GCAGGUGCUUGAAACCGUATT
452


 


VEGFR-1
1209
UUUAUGCUCAGCAAGAUUGTA
3
CAAUCUUGCUGAGCAUAAATT
453


 


VEGFR-1
2904
UUAUCUUCCUGAAAGCCGGAG
4
CCGGCUUUCAGGAAGAUAATT
454


 


VEGFR-1
1363
UUGAGGGAUACCAUAUGCGGT
5
CGCAUAUGGUAUCCCUCAATT
455


 


VEGFR-1
1158
UUGAUAAUUAACGAGUAGCCA
6
GCUACUCGUUAAUUAUCAATT
456


 


VEGFR-1
1091
UUAACCAUACAACUUCCGGCG
7
CCGGAAGUUGUAUGGUUAATT
457


 


VEGFR-1
471
UUAGGUGACGUAACCCGGCAG
8
GCCGGGUUACGUCACCUAATT
458


 


VEGFR-1
2751
UUGCUCUUGAGGUAGUUGGAG
9
CCAACUACCUCAAGAGCAATT
459


 


VEGFR-1
636
UUUGUCUUAUACAAAUGCCCA
10
GGCAUUUGUAUAAGACAAATT
460


 


VEGFR-1
1254
UUGACAAUUAGAGUGGCAGTG
11
CUGCCACUCUAAUUGUCAATT
461


 


VEGFR-1
2375
UUAUAAUUGAUAGGUAGUCAG
12
GACUACCUAUCAAUUAUAATT
462


 


VEGFR-1
3536
UUGAGUAUGUAAACCCACUAT
13
AGUGGGUUUACAUACUCAATT
463


 


VEGFR-1
2971
UUCCAUAGUGAUGGGCUCCTT
14
GGAGCCCAUCACUAUGGAATT
464


 


VEGFR-1
1774
UCUGUUAUUAACUGUCCGCAG
15
GCGGACAGUUAAUAACAGATT
465


 


VEGFR-1
3494
UUGGGAUGUAGUCUUUACCAT
16
GGUAAAGACUACAUCCCAATT
466


 


VEGFR-1
2269
UGUUAGAGUGAUCAGCUCCAG
17
GGAGCUGAUCACUCUAACATT
467


 


VEGFR-1
525
UUUCCAUCAGGGAUCAAAGTG
18
CUUUGAUCCCUGAUGGAAATT
468


 


VEGFR-1
769
UUGAACUCUCGUGUUCAAGGG
19
CUUGAACACGAGAGUUCAATT
469


 


VEGFR-1
2246
UAGACUUGUCCGAGGUUCCTT
20
GGAACCUCGGACAAGUCUATT
470


 


VEGFR-1
732
UUGAGGACAAGAGUAUGGCCT
21
GCCAUACUCUUGUCCUCAATT
471


 


VEGFR-1
3813
UUACUGGUUACUCUCAAGUCA
22
ACUUGAGAGUAACCAGUAATT
472


 


VEGFR-1
3925
UUCCAGCUCAGCGUGGUCGTA
23
CGACCACGCUGAGCUGGAATT
473


 


VEGFR-1
1414
UGCUUCGGAAUGAUUAUGGTT
24
CCAUAAUCAUUCCGAAGCATT
474


 


VEGFR-1
615
UUGACUGUUGCUUCACAGGTC
25
CCUGUGAAGCAACAGUCAATT
475


 


VEGFR-1
3300
UCAUCCAUUUGUACUCCUGGG
26
CAGGAGUACAAAUGGAUGATT
476


 


VEGFR-1
2845
UGGUUUCUUGCCUUGUUCCAG
27
GGAACAAGGCAAGAAACCATT
477


 


VEGFR-1
2802
UUAGGCUCCAUGUGUAGUGCT
28
CACUACACAUGGAGCCUAATT
478


 


VEGFR-1
1564
UCUAGAGUCAGCCACAACCAA
29
GGUUGUGGCUGACUCUAGATT
479


 


VEGFR-1
1154
UAAUUAACGAGUAGCCACGAG
30
CGUGGCUACUCGUUAAUUATT
480


 


VEGFR-1
1090
UAACCAUACAACUUCCGGCGA
31
GCCGGAAGUUGUAUGGUUATT
481


 


VEGFR-1
1260
UUCACAUUGACAAUUAGAGTG
32
CUCUAAUUGUCAAUGUGAATT
482


 


VEGFR-1
3530
AUGUAAACCCACUAUUUCCTG
33
GGAAAUAGUGGGUUUACAUTT
483


 


VEGFR-1
1177
AUCCUCUUCAGUUACGUCCTT
34
GGACGUAACUGAAGAGGAUTT
484


 


VEGFR-1
1193
UUGUAUAAUUCCCUGCAUCCT
35
GAUGCAGGGAAUUAUACAATT
485


 


VEGFR-1
1092
UUUAACCAUACAACUUCCGGC
36
CGGAAGUUGUAUGGUUAAATT
486


 


VEGFR-1
627
UACAAAUGCCCAUUGACUGTT
37
CAGUCAAUGGGCAUUUGUATT
487


 


VEGFR-1
474
AUGUUAGGUGACGUAACCCGG
38
GGGUUACGUCACCUAACAUTT
488


 


VEGFR-1
2761
UAAGUCACGUUUGCUCUUGAG
39
CAAGAGCAAACGUGACUUATT
489


 


VEGFR-1
2752
UUUGCUCUUGAGGUAGUUGGA
40
CAACUACCUCAAGAGCAAATT
490


 


VEGFR-1
3516
UUUCCUGUCAGUAUGGCAUTG
41
AUGCCAUACUGACAGGAAATT
491


 


VEGFR-1
1790
UACUGUAGUGCAUUGUUCUGT
42
AGAACAAUGCACUACAGUATT
492


 


VEGFR-1
1155
AUAAUUAACGAGUAGCCACGA
43
GUGGCUACUCGUUAAUUAUTT
493


 


VEGFR-1
1370
UUGUAGGUUGAGGGAUACCAT
44
GGUAUCCCUCAACCUACAATT
494


 


VEGFR-1
2227
UUGAACAGUGAGGUAUGCUGA
45
AGCAUACCUCACUGUUCAATT
495


 


VEGFR-1
3481
UUUACCAUCCUGUUGUACATT
46
UGUACAACAGGAUGGUAAATT
496


 


VEGFR-1
1261
UUUCACAUUGACAAUUAGAGT
47
UCUAAUUGUCAAUGUGAAATT
497


 


VEGFR-1
1791
AUACUGUAGUGCAUUGUUCTG
48
GAACAAUGCACUACAGUAUTT
498


 


VEGFR-1
3805
UACUCUCAAGUCAAUCUUGAG
49
CAAGAUUGACUUGAGAGUATT
499


 


VEGFR-1
2764
AAAUAAGUCACGUUUGCUCTT
50
GAGCAAACGUGACUUAUUUTT
500


 


VEGFR-2
617
UAAUAGACUGGUAACUUUCAT
51
GAAAGUUACCAGUCUAUUATT
501


 


VEGFR-2
2686
UAGAAGGUUGACCACAUUGAG
52
CAAUGUGGUCAACCUUCUATT
502


 


VEGFR-2
561
UAGCUGAUCAUGUAGCUGGGA
53
CCAGCUACAUGAUCAGCUATT
503


 


VEGFR-2
525
UUGCUGUCCCAGGAAAUUCTG
54
GAAUUUCCUGGGACAGCAATT
504


 


VEGFR-2
2277
AUGAUUUCCAAGUUCGUCUTT
55
AGACGAACUUGGAAAUCAUTT
505


 


VEGFR-2
395
UAAUGUACACGACUCCAUGTT
56
CAUGGAGUCGUGUACAUUATT
506


 


VEGFR-2
2410
UUCAUCUGGAUCCAUGACGAT
57
CGUCAUGGAUCCAGAUGAATT
507


 


VEGFR-2
2007
UGAUUCUCCAGGUUUCCUGTG
58
CAGGAAACCUGGAGAAUCATT
508


 


VEGFR-2
1323
UAGACCGUACAUGUCAGCGTT
59
CGCUGACAUGUACGGUCUATT
509


 


VEGFR-2
3382
UUCUGGUGUAGUAUAAUCAGG
60
UGAUUAUACUACACCAGAATT
510


 


VEGFR-2
3078
UUUCGUGCCGCCAGGUCCCTG
61
GGGACCUGGCGGCACGAAATT
511


 


VEGFR-2
1432
UUCUUCACAAGGGUAUGGGTT
62
CCCAUACCCUUGUGAAGAATT
512


 


VEGFR-2
1817
UCAAUUUCCAAAGAGUAUCCA
63
GAUACUCUUUGGAAAUUGATT
513


 


VEGFR-2
688
UAGUUCAAUUCCAUGAGACGG
64
GUCUCAUGGAAUUGAACUATT
514


 


VEGFR-2
2310
AACAUGGCAAUCACCGCCGTG
65
CGGCGGUGAUUGCCAUGUUTT
515


 


VEGFR-2
2130
UCCUUCAAUACAAUGCCUGAG
66
CAGGCAUUGUAUUGAAGGATT
516


 


VEGFR-2
799
UACAAGUUUCUUAUGCUGATG
67
UCAGCAUAAGAAACUUGUATT
517


 


VEGFR-2
3523
UGAUAUCGGAAGAACAAUGTA
68
CAUUGUUCUUCCGAUAUCATT
518


 


VEGFR-2
1843
UGUGCUAUUAGAGAACAUGGT
69
CAUGUUCUCUAAUAGCACATT
519


 


VEGFR-2
2941
UUCUACAUCACUGAGGGACTT
70
GUCCCUCAGUGAUGUAGAATT
520


 


VEGFR-2
2088
UCUUUAAACCACAUGAUCUGT
71
AGAUCAUGUGGUUUAAAGATT
521


 


VEGFR-2
472
UCUUGCACAAAGUGACACGTT
72
CGUGUCACUUUGUGCAAGATT
522


 


VEGFR-2
180
UGAUUAUUGGGCCAAAGCCAG
73
GGCUUUGGCCCAAUAAUCATT
523


 


VEGFR-2
1568
AUUUGUACAAAGCUGACACAT
74
GUGUCAGCUUUGUACAAAUTT
524


 


VEGFR-2
3141
UAAAUAUCCCGGGCCAAGCCA
75
GCUUGGCCCGGGAUAUUUATT
525


 


VEGFR-2
3769
AACCAUACCACUGUCCGUCTG
76
GACGGACAGUGGUAUGGUUTT
526


 


VEGFR-2
3920
UGUCAUCGGAGUGAUAUCCGG
77
GGAUAUCACUCCGAUGACATT
527


 


VEGFR-2
1718
UCUCAAACGUAGAUCUGUCTG
78
GACAGAUCUACGUUUGAGATT
528


 


VEGFR-2
2919
UCCUCCACAAAUCCAGAGCTG
79
GCUCUGGAUUUGUGGAGGATT
529


 


VEGFR-2
324
UAAAUGACCGAGGCCAAGUCA
80
ACUUGGCCUCGGUCAUUUATT
530


 


VEGFR-2
1050
UAACCAAGGUACUUCGCAGGG
81
CUGCGAAGUACCUUGGUUATT
531


 


VEGFR-2
56
UAGGCAAACCCACAGAGGCGG
82
GCCUCUGUGGGUUUGCCUATT
532


 


VEGFR-2
2453
UGGCAUCAUAAGGCAGUCGTT
83
CGACUGCCUUAUGAUGCCATT
533


 


VEGFR-2
1303
UUGAGUGGUGCCGUACUGGTA
84
CCAGUACGGCACCACUCAATT
534


 


VEGFR-2
1813
UUUCCAAAGAGUAUCCAAGTT
85
CUUGGAUACUCUUUGGAAATT
535


 


VEGFR-2
2015
UUGUCGUCUGAUUCUCCAGGT
86
CUGGAGAAUCAGACGACAATT
536


 


VEGFR-2
3088
UAAGAGGAUAUUUCGUGCCGC
87
GGCACGAAAUAUCCUCUUATT
537


 


VEGFR-2
625
UAUGUACAUAAUAGACUGGTA
88
CCAGUCUAUUAUGUACAUATT
538


 


VEGFR-2
800
UUACAAGUUUCUUAUGCUGAT
89
CAGCAUAAGAAACUUGUAATT
539


 


VEGFR-2
811
UAGGUCUCGGUUUACAAGUTT
90
ACUUGUAAACCGAGACCUATT
540


 


VEGFR-2
812
UUAGGUCUCGGUUUACAAGTT
91
CUUGUAAACCGAGACCUAATT
541


 


VEGFR-2
3093
UCCGAUAAGAGGAUAUUUCGT
92
GAAAUAUCCUCUUAUCGGATT
542


 


VEGFR-2
801
UUUACAAGUUUCUUAUGCUGA
93
AGCAUAAGAAACUUGUAAATT
543


 


VEGFR-2
2009
UCUGAUUCUCCAGGUUUCCTG
94
GGAAACCUGGAGAAUCAGATT
544


 


VEGFR-2
2127
UUCAAUACAAUGCCUGAGUCT
95
ACUCAGGCAUUGUAUUGAATT
545


 


VEGFR-2
1585
UUUGUUGACCGCUUCACAUTT
96
AUGUGAAGCGGUCAACAAATT
546


 


VEGFR-2
562
AUAGCUGAUCAUGUAGCUGGG
97
CAGCUACAUGAUCAGCUAUTT
547


 


VEGFR-2
3906
UAUCCGGACUGGUAGCCGCTT
98
GCGGCUACCAGUCCGGAUATT
548


 


VEGFR-2
1316
UACAUGUCAGCGUUUGAGUGG
99
ACUCAAACGCUGACAUGUATT
549


 


VEGFR-2
3520
UAUCGGAAGAACAAUGUAGTC
100
CUACAUUGUUCUUCCGAUATT
550


 


VEGFR-3
453
UUCCUGUUGACCAAGAGCGTG
101
CGCUCUUGGUCAACAGGAATT
551


 


VEGFR-3
2694
UUGAGCUCCGACAUCAGCGCG
102
CGCUGAUGUCGGAGCUCAATT
552


 


VEGFR-3
1689
UUGGAUUCGAUGGUGAAGCCG
103
GCUUCACCAUCGAAUCCAATT
553


 


VEGFR-3
988
UUCAUGCACAAUGACCUCGGT
104
CGAGGUCAUUGUGCAUGAATT
554


 


VEGFR-3
4374
UUACCAAGGAAUAAUCGGCGG
105
GCCGAUUAUUCCUUGGUAATT
555


 


VEGFR-3
2142
UCUUUGUACCACACGAUGCTG
106
GCAUCGUGUGGUACAAAGATT
556


 


VEGFR-3
1833
UUGCAGUCGAGCAGAAGCGGG
107
CGCUUCUGCUCGACUGCAATT
557


 


VEGFR-3
3903
UUCAGCUACCUGAAGCCGCTT
108
GCGGCUUCAGGUAGCUGAATT
558


 


VEGFR-3
3273
UACACCUUGUCGAAGAUGCTT
109
GCAUCUUCGACAAGGUGUATT
559


 


VEGFR-3
1107
UACCACUGGAACUCGGGCGGG
110
CGCCCGAGUUCCAGUGGUATT
560


 


VEGFR-3
336
UAGCAGACGUAGCUGCCUGTG
111
CAGGCAGCUACGUCUGCUATT
561


 


VEGFR-3
2607
UUGUGGAUGCCGAAAGCGGAG
112
CCGCUUUCGGCAUCCACAATT
562


 


VEGFR-3
1556
UCACAGUCUUAUUCUUUCCCT
113
GGAAAGAAUAAGACUGUGATT
563


 


VEGFR-3
108
UCCGUGAUGUUCAAGGUCGGG
114
CGACCUUGAACAUCACGGATT
564


 


VEGFR-3
1954
AUAGUGGCCCUCGUGCUCGGG
115
CGAGCACGAGGGCCACUAUTT
565


 


VEGFR-3
2100
AAGCACUGCAUCUCCAGCGAG
116
CGCUGGAGAUGCAGUGCUUTT
566


 


VEGFR-3
693
UCAUAGAGCUCGUUGCCUGTG
117
CAGGCAACGAGCUCUAUGATT
567


 


VEGFR-3
2337
AGGAUCACGAUCUCCAUGCTG
118
GCAUGGAGAUCGUGAUCCUTT
568


 


VEGFR-3
2054
UCAAGUUCUGCGUGAGCCGAG
119
CGGCUCACGCAGAACUUGATT
569


 


VEGFR-3
860
UCUGUUGGGAGCGUCGCUCGG
120
GAGCGACGCUCCCAACAGATT
570


 


VEGFR-3
2436
UAGCCCGUCUUGAUGUCUGCG
121
CAGACAUCAAGACGGGCUATT
571


 


VEGFR-3
3759
UUCAUCCUGGAGGAACCACGG
122
GUGGUUCCUCCAGGAUGAATT
572


 


VEGFR-3
288
AACACCUUGCAGUAGGGCCTG
123
GGCCCUACUGCAAGGUGUUTT
573


 


VEGFR-3
1485
UGCGUGGUCACCGCCCUCCAG
124
GGAGGGCGGUGACCACGCATT
574


 


VEGFR-3
2502
UCGUAGGACAGGUAUUCGCAT
125
GCGAAUACCUGUCCUACGATT
575


 


VEGFR-3
925
AUACGAGCCCAGGUCGUGCTG
126
GCACGACCUGGGCUCGUAUTT
576


 


VEGFR-3
426
UUGUUGAUGAAUGGCUGCUCA
127
AGCAGCCAUUCAUCAACAATT
577


 


VEGFR-3
3189
UAGAUGUCCCGGGCAAGGCCA
128
GCCUUGCCCGGGACAUCUATT
578


 


VEGFR-3
2274
UUGACGCAGCCCUUGGGUCTG
129
GACCCAAGGGCUGCGUCAATT
579


 


VEGFR-3
2196
UUCUGGUUGGAGUCCGCCAAG
130
UGGCGGACUCCAACCAGAATT
580


 


VEGFR-3
2019
UGCACCGACAGGUACUUCUTG
131
AGAAGUACCUGUCGGUGCATT
581


 


VEGFR-3
360
AUGCGUGCCUUGAUGUACUTG
132
AGUACAUCAAGGCACGCAUTT
582


 


VEGFR-3
1755
UACUUGUAGCUGUCGGCUUGG
133
AAGCCGACAGCUACAAGUATT
583


 


VEGFR-3
3037
UUCCAUGGUCAGCGGGCUCAG
134
GAGCCCGCUGACCAUGGAATT
584


 


VEGFR-3
1018
UUUGAGCCACUCGACGCUGAT
135
CAGCGUCGAGUGGCUCAAATT
585


 


VEGFR-3
1684
UUCGAUGGUGAAGCCGUCGGG
136
CGACGGCUUCACCAUCGAATT
586


 


VEGFR-3
4373
UACCAAGGAAUAAUCGGCGGG
137
CGCCGAUUAUUCCUUGGUATT
587


 


VEGFR-3
987
UCAUGCACAAUGACCUCGGTG
138
CCGAGGUCAUUGUGCAUGATT
588


 


VEGFR-3
3267
UUGUCGAAGAUGCUUUCAGGG
139
CUGAAAGCAUCUUCGACAATT
589


 


VEGFR-3
4387
UGUAUUACUCAUAUUACCAAG
140
UGGUAAUAUGAGUAAUACATT
590


 


VEGFR-3
3883
UUCUUGUCUAUGCCUGCUCTC
141
GAGCAGGCAUAGACAAGAATT
591


 


VEGFR-3
4376
UAUUACCAAGGAAUAAUCGGC
142
CGAUUAUUCCUUGGUAAUATT
592


 


VEGFR-3
2140
UUUGUACCACACGAUGCUGGG
143
CAGCAUCGUGUGGUACAAATT
593


 


VEGFR-3
978
AUGACCUCGGUGCUCUCCCGA
144
GGGAGAGCACCGAGGUCAUTT
594


 


VEGFR-3
2427
UUGAUGUCUGCGUGGGCCGGC
145
CGGCCCACGCAGACAUCAATT
595


 


VEGFR-3
1109
UGUACCACUGGAACUCGGGCG
146
CCCGAGUUCCAGUGGUACATT
596


 


VEGFR-3
319
UGUGUCGUUGGCAUGUACCTC
147
GGUACAUGCCAACGACACATT
597


 


VEGFR-3
1843
AUGCACGUUCUUGCAGUCGAG
148
CGACUGCAAGAACGUGCAUTT
598


 


VEGFR-3
317
UGUCGUUGGCAUGUACCUCGT
149
GAGGUACAUGCCAACGACATT
599


 


VEGFR-3
700
CUGGAUGUCAUAGAGCUCGTT
150
CGAGCUCUAUGACAUCCAGTT
600


 


Tie-2
1223
UAAGCUUACAAUCUGGCCCGT
151
GGGCCAGAUUGUAAGCUUATT
601


(TEK)







 


Tie-2
2350
UAUCUUCACAUCAACGUGCTG
152
GCACGUUGAUGUGAAGAUATT
602


(TEK)







 


Tie-2
706
UAUGUUCACGUUAUCUCCCTT
153
GGGAGAUAACGUGAACAUATT
603


(TEK)







 


Tie-2
3561
UUUAAGGACACCAAUAUCUGG
154
AGAUAUUGGUGUCCUUAAATT
604


(TEK)







 


Tie-2
2763
UGAAAUUUGAUGUCAUUCCAG
155
GGAAUGACAUCAAAUUUCATT
605


(TEK)







 


Tie-2
174
UUGUUUACAAGUUAGAGGCAA
156
GCCUCUAACUUGUAAACAATT
606


(TEK)







 


Tie-2
1183
UUCAUUGCACUGCAGACCCTT
157
GGGUCUGCAGUGCAAUGAATT
607


(TEK)







 


Tie-2
805
UAGAAUAUCAGGUACUUCATG
158
UGAAGUACCUGAUAUUCUATT
608


(TEK)







 


Tie-2
2601
UUCAAUUGCAAUAUGAUCAGA
159
UGAUCAUAUUGCAAUUGAATT
609


(TEK)







 


Tie-2
2277
UAGCCAUCCAAUAUUGUCCAA
160
GGACAAUAUUGGAUGGCUATT
610


(TEK)







 


Tie-2
1366
UACUUCUAUAUGAUCUGGCAA
161
GCCAGAUCAUAUAGAAGUATT
611


(TEK)







 


Tie-2
32
UUUGGUAUCAGCAGGGCUGGG
162
CAGCCCUGCUGAUACCAAATT
612


(TEK)







 


Tie-2
4085
UGUACUAUCAGGGUCAUUGTT
163
CAAUGACCCUGAUAGUACATT
613


(TEK)







 


Tie-2
3881
UUCUGAUUUCAGCCCAUUCTT
164
GAAUGGGCUGAAAUCAGAATT
614


(TEK)







 


Tie-2
646
UUGUUGACGCAUCUUCAUGGT
165
CAUGAAGAUGCGUCAACAATT
615


(TEK)







 


Tie-2
4021
AUAGCAUUCAACAUAAAGGTA
166
CCUUUAUGUUGAAUGCUAUTT
616


(TEK)







 


Tie-2
209
UUUGUGACUUUCCAUUAGCAT
167
GCUAAUGGAAAGUCACAAATT
617


(TEK)







 


Tie-2
4223
UAAAUGAAACGGGACUGGCTG
168
GCCAGUCCCGUUUCAUUUATT
618


(TEK)







 


Tie-2
3961
UACUAAUUGUACUCACGCCTT
169
GGCGUGAGUACAAUUAGUATT
619


(TEK)







 


Tie-2
1771
UUGAAUAUGUUGCCAAGCCTC
170
GGCUUGGCAACAUAUUCAATT
620


(TEK)







 


Tie-2
3909
UUAUUGCAUAUGAAACCACAA
171
GUGGUUUCAUAUGCAAUAATT
621


(TEK)







 


Tie-2
3606
UAAAGCGUGGUAUUCACGUAG
172
ACGUGAAUACCACGCUUUATT
622


(TEK)







 


Tie-2
477
AUUAAGGCUUCAAAGUCCCTT
173
GGGACUUUGAAGCCUUAAUTT
623


(TEK)







 


Tie-2
3421
UUCUGCACAAGUCAUCCCGCA
174
CGGGAUGACUUGUGCAGAATT
624


(TEK)







 


Tie-2
2730
UAAAUUGUAGGAUCUGGGUTG
175
ACCCAGAUCCUACAAUUUATT
625


(TEK)







 


Tie-2
1800
UAGUUGAGUGUAACAAUCUCA
176
AGAUUGUUACACUCAACUATT
626


(TEK)







 


Tie-2
3385
UAAGCUAACAAUCUCCCAUAG
177
AUGGGAGAUUGUUAGCUUATT
627


(TEK)







 


Tie-2
1692
UAAGGCUCAGAGCUGAUGUTG
178
ACAUCAGCUCUGAGCCUUATT
628


(TEK)







 


Tie-2
1657
AUGUCCAGUGUCAAUCACGTT
179
CGUGAUUGACACUGGACAUTT
629


(TEK)







 


Tie-2
3665
UUCUGUCCUAGGCCGCUUCTT
180
GAAGCGGCCUAGGACAGAATT
630


(TEK)







 


Tie-2
2091
UUAAGUAGCACCGAAGUCAAG
181
UGACUUCGGUGCUACUUAATT
631


(TEK)







 


Tie-2
2827
UAACCCAUCCUUCUUGAUGCG
182
CAUCAAGAAGGAUGGGUUATT
632


(TEK) 







 


Tie-2
1979
UUGGUUGCCAGGUCAAAUUTA
183
AAUUUGACCUGGCAACCAATT
633


(TEK)







 


Tie-2
67
UAGAUUAGGAUGGGAAAGGCT
184
CCUUUCCCAUCCUAAUCUATT
634


(TEK)







 


Tie-2
3459
UUCUCCAGUCUGUAGCCCUGG
185
AGGGCUACAGACUGGAGAATT
635


(TEK)







 


Tie-2
2764
UUGAAAUUUGAUGUCAUUCCA
186
GAAUGACAUCAAAUUUCAATT
636


(TEK)







 


Tie-2
3560
UUAAGGACACCAAUAUCUGGG
187
CAGAUAUUGGUGUCCUUAATT
637


(TEK)







 


Tie-2
715
UUUGAAAGAUAUGUUCACGTT
188
CGUGAACAUAUCUUUCAAATT
638


(TEK)







 


Tie-2
1368
UUUACUUCUAUAUGAUCUGGC
189
CAGAUCAUAUAGAAGUAAATT
639


(TEK)







 


Tie-2
2351
UUAUCUUCACAUCAACGUGCT
190
CACGUUGAUGUGAAGAUAATT
640


(TEK)







 


Tie-2
205
UGACUUUCCAUUAGCAUCGTC
191
CGAUGCUAAUGGAAAGUCATT
641


(TEK)







 


Tie-2
3957
AAUUGUACUCACGCCUUCCTA
192
GGAAGGCGUGAGUACAAUUTT
642


(TEK)







 


Tie-2
3962
AUACUAAUUGUACUCACGCCT
193
GCGUGAGUACAAUUAGUAUTT
643


(TEK)







 


Tie-2
2352
UUUAUCUUCACAUCAACGUGC
194
ACGUUGAUGUGAAGAUAAATT
644


(TEK)







 


Tie-2
3963
UAUACUAAUUGUACUCACGCC
195
CGUGAGUACAAUUAGUAUATT
645


(TEK)







 


Tie-2
1777
UGUCACUUGAAUAUGUUGCCA
196
GCAACAUAUUCAAGUGACATT
646


(TEK)







 


Tie-2
3388
UCCUAAGCUAACAAUCUCCCA
197
GGAGAUUGUUAGCUUAGGATT
647


(TEK)







 


Tie-2
636
AUCUUCAUGGUUCGUAUCCTG
198
GGAUACGAACCAUGAAGAUTT
648


(TEK)







 


Tie-2
74
UCCUUUGUAGAUUAGGAUGGG
199
CAUCCUAAUCUACAAAGGATT
649


(TEK)







 


Tie-2
707
AUAUGUUCACGUUAUCUCCCT
200
GGAGAUAACGUGAACAUAUTT
650


(TEK)







 


bFGFR
3814
UAAAUCUCUGGUAACGACCCT
201
GGUCGUUACCAGAGAUUUATT
651


 


bFGFR
1478
UUACACAUGAACUCCACGUTG
202
ACGUGGAGUUCAUGUGUAATT
652


 


bFGFR
3773
UAUACUCAGAUUUAUCAACTT
203
GUUGAUAAAUCUGAGUAUATT
653


 


bFGFR
715
UAGCGGUGCAGAGUGUGGCTG
204
GCCACACUCUGCACCGCUATT
654


 


bFGFR
575
UUCAAACUGACCCUCGCUCGG
205
GAGCGAGGGUCAGUUUGAATT
655


 


bFGFR
646
UUCUGCAGUUAGAGGUUGGTG
206
CCAACCUCUAACUGCAGAATT
656


 


bFGFR
3625
AUCGGAAUUAAUAAGCCACTG
207
GUGGCUUAUUAAUUCCGAUTT
657


 


bFGFR
2318
UACAAGGGACCAUCCUGCGTG
208
CGCAGGAUGGUCCCUUGUATT
658


 


bFGFR
1439
UUGUUGGCGGGCAACCCUGCT
209
CAGGGUUGCCCGCCAACAATT
659


 


bFGFR
3860
AUAGCAACUGAUGCCUCCCAG
210
GGGAGGCAUCAGUUGCUAUTT
660


 


bFGFR
3163
UGAGGGUUACAGCUGACGGTG
211
CCGUCAGCUGUAACCCUCATT
661


 


bFGFR
2600
UCGAUGUGGUGAAUGUCCCGT
212
GGGACAUUCACCACAUCGATT
662


 


bFGFR
2513
UCUCGGUGUAUGCACUUCUTG
213
AGAAGUGCAUACACCGAGATT
663


 


bFGFR
2214
UUUCUCUGUUGCGUCCGACTT
214
GUCGGACGCAACAGAGAAATT
664


 


bFGFR
1346
UUCUCCACAAUGCAGGUGUAG
215
ACACCUGCAUUGUGGAGAATT
665


 


bFGFR
1556
UUGUCUGGGCCAAUCUUGCTC
216
GCAAGAUUGGCCCAGACAATT
666


 


bFGFR
2671
UCCGGUCAAAUAAUGCCUCGG
217
GAGGCAUUAUUUGACCGGATT
667


 


bFGFR
3105
UUUGAGUCCGCCAUUGGCAAG
218
UGCCAAUGGCGGACUCAAATT
668


 


bFGFR
2091
UUUGCCUAAGACCAGUCUGTC
219
CAGACUGGUCUUAGGCAAATT
669


 


bFGFR
1590
UCCAGCAGUCUUCAAGAUCTG
220
GAUCUUGAAGACUGCUGGATT
670


 


bFGFR
1689
UCCGAUAGAGUUACCCGCCAA
221
GGCGGGUAACUCUAUCGGATT
671


 


bFGFR
1319
UUGUCAGAGGGCACCACAGAG
222
CUGUGGUGCCCUCUGACAATT
672


 


bFGFR
2342
UUGGAGGCAUACUCCACGATG
223
UCGUGGAGUAUGCCUCCAATT
673


 


bFGFR
107
UCUCGGUCCCGACCGGACGTG
224
CGUCCGGUCGGGACCGAGATT
674


 


bFGFR
3662
UCUGGUACCAGGCAUUUGGTC
225
CCAAAUGCCUGGUACCAGATT
675


 


bFGFR
2150
UUGUCCAGCCCGAUAGCCUCT
226
AGGCUAUCGGGCUGGACAATT
676


 


bFGFR
1517
UUUAGCCACUGGAUGUGCGGC
227
CGCACAUCCAGUGGCUAAATT
677


 


bFGFR
1264
UGUAGCCUCCAAUUCUGUGGT
228
CACAGAAUUGGAGGCUACATT
678


 


bFGFR
3576
UUCAAUCGUGGCUCGAAGCAC
229
GCUUCGAGCCACGAUUGAATT
679


 


bFGFR
613
AUCUCCAUGGAUACUCCACAG
230
GUGGAGUAUCCAUGGAGAUTT
680


 


bFGFR
1221
UUUCAACCAGCGCAGUGUGGG
231
CACACUGCGCUGGUUGAAATT
681


 


bFGFR
3004
UAGAGCUCCGGGUGUCGGGAA
232
CCCGACACCCGGAGCUCUATT
682


 


bFGFR
3825
UUACCGAUGGGUAAAUCUCTG
233
GAGAUUUACCCAUCGGUAATT
683


 


bFGFR
3813
AAAUCUCUGGUAACGACCCTT
234
GGGUCGUUACCAGAGAUUUTT
684


 


bFGFR
3861
UAUAGCAACUGAUGCCUCCCA
235
GGAGGCAUCAGUUGCUAUATT
685


 


bFGFR
576
UUUCAAACUGACCCUCGCUCG
236
AGCGAGGGUCAGUUUGAAATT
686


 


bFGFR
3772
AUACUCAGAUUUAUCAACUTT
237
AGUUGAUAAAUCUGAGUAUTT
687


 


bFGFR
3824
UACCGAUGGGUAAAUCUCUGG
238
AGAGAUUUACCCAUCGGUATT
688


 


bFGFR
2319
AUACAAGGGACCAUCCUGCGT
239
GCAGGAUGGUCCCUUGUAUTT
689


 


bFGFR
3771
UACUCAGAUUUAUCAACUUTG
240
AAGUUGAUAAAUCUGAGUATT
690


 


bFGFR
2511
UCGGUGUAUGCACUUCUUGGA
241
CAAGAAGUGCAUACACCGATT
691


 


bFGFR
2333
UACUCCACGAUGACAUACAAG
242
UGUAUGUCAUCGUGGAGUATT
692


 


bFGFR
3624
UCGGAAUUAAUAAGCCACUGG
243
AGUGGCUUAUUAAUUCCGATT
693


 


bFGFR
1304
ACAGAGUCCAUUAUGAUGCTC
244
GCAUCAUAAUGGACUCUGUTT
694


 


bFGFR
1608
UUUGUCGGUGGUAUUAACUCC 
245
AGUUAAUACCACCGACAAATT
695


 


bFGFR
1301
GAGUCCAUUAUGAUGCUCCAG
246
GGAGCAUCAUAAUGGACUCTT
696


 


bFGFR
3626
UAUCGGAAUUAAUAAGCCACT
247
UGGCUUAUUAAUUCCGAUATT
697


 


bFGFR
2672
AUCCGGUCAAAUAAUGCCUCG
248
AGGCAUUAUUUGACCGGAUTT
698


 


bFGFR
2213
UUCUCUGUUGCGUCCGACUTC
249
AGUCGGACGCAACAGAGAATT
699


 


bFGFR
2597
AUGUGGUGAAUGUCCCGUGCG
250
CACGGGACAUUCACCACAUTT
700


 


IL8RA
1971
UUUAUUAGGAACAUCUGCCTG
251
GGCAGAUGUUCCUAAUAAATT
701


 


IL8RA
75
UUGAUCUAACUGAAGCACCGG
252
GGUGCUUCAGUUAGAUCAATT
702


 


IL8RA
645
AUUGUUUGGAUGGUAAGCCTG
253
GGCUUACCAUCCAAACAAUTT
703


 


IL8RA
1431
UAAUUAGCCAGUUAGUGGGTT
254
CCCACUAACUGGCUAAUUATT
704


 


IL8RA
1378
UUCGUUUCCAUGGAGGUGCAA
255
GCACCUCCAUGGAAACGAATT
705


 


IL8RA
1470
UCAUCUAAUGUCAGAUUCGGG
256
CGAAUCUGACAUUAGAUGATT
706


 


IL8RA
218
UACUUGUUGAGUGUCUCAGTT
257
CUGAGACACUCAACAAGUATT
707


 


IL8RA
1101
AUGACGUGCCAAGAACUCCTT
258
GGAGUUCUUGGCACGUCAUTT
708


 


IL8RA
677
UUUCCCAGGACCUCAUAGCAA
259
GCUAUGAGGUCCUGGGAAATT
709


 


IL8RA
1178
AAGAGAUAUUCCUUCAUCGAT
260
CGAUGAAGGAAUAUCUCUUTT
710


 


IL8RA
1543
UUGAGGAGAUGCUCCUGUGAG
261
CACAGGAGCAUCUCCUCAATT
711


 


IL8RA
1783
UCUUGUGGCAUAGAUCUGGCT
262
CCAGAUCUAUGCCACAAGATT
712


 


IL8RA
1249
AUAGUGCCUGUCCAGAGCCAG
263
GGCUCUGGACAGGCACUAUTT
713


 


IL8RA
1520
UCAACGAGAGCAUCCAGCCCT
264
GGCUGGAUGCUCUCGUUGATT
714


 


IL8RA
1068
AUGCAUAGCCAGGAUCUUGAG
265
CAAGAUCCUGGCUAUGCAUTT
715


 


IL8RA
1347
UUGGAGGUACCUCAACAGCTC
266
GCUGUUGAGGUACCUCCAATT
716


 


IL8RA
1208
UCAGGGUGUUGGUUAUUCUTT
267
AGAAUAACCAACACCCUGATT
717


 


IL8RA
117
AUCUGUAAUAUUUGACAUGTC
268
CAUGUCAAAUAUUACAGAUTT
718


 


IL8RA
1862
UGCUUGUCUCGUUCCACUUGG
269
AAGUGGAACGAGACAAGCATT
719


 


IL8RA
1153
UUCAGAGGUUGGAAGAGACAT
270
GUCUCUUCCAACCUCUGAATT
720


 


IL8RA
640
UUGGAUGGUAAGCCUGGCGGA
271
CGCCAGGCUUACCAUCCAATT
721


 


IL8RA
1411
UAAAGAUGUGACGUUCAACGG
272
GUUGAACGUCACAUCUUUATT
722


 


IL8RA
71
UCUAACUGAAGCACCGGCCAG
273
GGCCGGUGCUUCAGUUAGATT
723


 


IL8RA
1397
UCAACGGGAAUGAUGGUGCTT
274
GCACCAUCAUUCCCGUUGATT
724


 


IL8RA
644
UUGUUUGGAUGGUAAGCCUGG
275
AGGCUUACCAUCCAAACAATT
725


 


IL8RA
641
UUUGGAUGGUAAGCCUGGCGG
276
GCCAGGCUUACCAUCCAAATT
726


 


IL8RA
76
UUUGAUCUAACUGAAGCACCG
277
GUGCUUCAGUUAGAUCAAATT
727


 


IL8RA
1398
UUCAACGGGAAUGAUGGUGCT
278
CACCAUCAUUCCCGUUGAATT
728


 


IL8RA
1381
UGCUUCGUUUCCAUGGAGGTG
279
CCUCCAUGGAAACGAAGCATT
729


 


IL8RA
1769
UCUGGCUUCCAAACCCUCUTT
280
AGAGGGUUUGGAAGCCAGATT
730


 


IL8RA
1435
AUGCUAAUUAGCCAGUUAGTG
281
CUAACUGGCUAAUUAGCAUTT
731


 


IL8RA
1175
AGAUAUUCCUUCAUCGAUGGT
282
CAUCGAUGAAGGAAUAUCUTT
732


 


IL8RA
1970
UUAUUAGGAACAUCUGCCUGC
283
AGGCAGAUGUUCCUAAUAATT
733


 


IL8RA
1432
CUAAUUAGCCAGUUAGUGGGT
284
CCACUAACUGGCUAAUUAGTT
734


 


IL8RA
74
UGAUCUAACUGAAGCACCGGC
285
CGGUGCUUCAGUUAGAUCATT
735


 


IL8RA
646
AAUUGUUUGGAUGGUAAGCCT
286
GCUUACCAUCCAAACAAUUTT
736


 


IL8RA
639
UGGAUGGUAAGCCUGGCGGAA
287
CCGCCAGGCUUACCAUCCATT
737


 


IL8RA
1082
UUGCUGACCAGGCCAUGCATA
288
UGCAUGGCCUGGUCAGCAATT
738


 


IL8RA
1770
AUCUGGCUUCCAAACCCUCTT
289
GAGGGUUUGGAAGCCAGAUTT
739


 


IL8RA
81
AAUGGUUUGAUCUAACUGAAG
290
UCAGUUAGAUCAAACCAUUTT
740


 


IL8RA
1372
UCCAUGGAGGUGCAAAGGCCG
291
GCCUUUGCACCUCCAUGGATT
741


 


IL8RA
1388
AUGAUGGUGCUUCGUUUCCAT
292
GGAAACGAAGCACCAUCAUTT
742


 


IL8RA
643
UGUUUGGAUGGUAAGCCUGGC
293
CAGGCUUACCAUCCAAACATT
743


 


IL8RA
1784
UUCUUGUGGCAUAGAUCUGGC
294
CAGAUCUAUGCCACAAGAATT
744


 


IL8RA
1524
AGGGUCAACGAGAGCAUCCAG
295
GGAUGCUCUCGUUGACCCUTT
745


 


IL8RA
237
AUAGGCGAUGAUCACAACATA
296
UGUUGUGAUCAUCGCCUAUTT
746


 


IL8RA
219
AUACUUGUUGAGUGUCUCAGT
297
UGAGACACUCAACAAGUAUTT
747


 


IL8RA
1389
AAUGAUGGUGCUUCGUUUCCA
298
GAAACGAAGCACCAUCAUUTT
748


 


IL8RA
1972
CUUUAUUAGGAACAUCUGCCT
299
GCAGAUGUUCCUAAUAAAGTT
749


 


IL8RA
1115
UAGGAGGUAACACGAUGACGT
300
GUCAUCGUGUUACCUCCUATT
750


 


IL8RB
2648
UUAAGUGUCAAUUUAGUGGCA
301
CCACUAAAUUGACACUUAATT
751


 


IL8RB
2184
UUUCUUGUGGGUCAAUUCCTA
302
GGAAUUGACCCACAAGAAATT
752


 


IL8RB
2250
UUGGGUCUUGUGAAUAAGCTG
303
GCUUAUUCACAAGACCCAATT
753


 


IL8RB
1746
UUCACUUCUUAGAACAUAGAG
304
CUAUGUUCUAAGAAGUGAATT
754


 


IL8RB
960
UUGGAUGAGUAGACGGUCCTT
305
GGACCGUCUACUCAUCCAATT
755


 


IL8RB
454
AUUACUAAGAUCUUCACCUTT
306
AGGUGAAGAUCUUAGUAAUTT
756


 


IL8RB
2750
UUGGUUUAAUCAGCCUUGGTG
307
CCAAGGCUGAUUAAACCAATT
757


 


IL8RB
2604
AUCACUACUGUUUAUCUGCAG
308
GCAGAUAAACAGUAGUGAUTT
758


 


IL8RB
1026
AUCCGUAACAGCAUCCGCCAG
309
GGCGGAUGCUGUUACGGAUTT
759


 


IL8RB
1384
AUGUAUAGCUAGAAUCUUGAG
310
CAAGAUUCUAGCUAUACAUTT
760


 


IL8RB
1149
AAGAUGACCCGCAUGGCCCGG
311
GGGCCAUGCGGGUCAUCUUTT
761


 


IL8RB
2464
UCUCAGUACCUCAUGUAGGTG
312
CCUACAUGAGGUACUGAGATT
762


 


IL8RB
877
UUUGACCAAGUAGCGCUUCTG
313
GAAGCGCUACUUGGUCAAATT
763


 


IL8RB
2324
UUCGUUAGGUACAUAUCACAT
314
GUGAUAUGUACCUAACGAATT
764


 


IL8RB
2360
AUGAGUACUUCAUUCCUCUTT
315
AGAGGAAUGAAGUACUCAUTT
765


 


IL8RB
265
UUGGGUGGUAGUCAGAGCUGT
316
AGCUCUGACUACCACCCAATT
766


 


IL8RB
1642
UUUCUAAACCAUGCAAGGGAA
317
CCCUUGCAUGGUUUAGAAATT
767


 


IL8RB
2146
UCAUGUGUUAAUUCUAUGUCT
318
ACAUAGAAUUAACACAUGATT
768


 


IL8RB
2627
UUAAGUCACAUUGCGGUACAA
319
GUACCGCAAUGUGACUUAATT
769


 


IL8RB
1000
UGUAUUGUUGCCCAUGUCCTC
320
GGACAUGGGCAACAAUACATT
770


 


IL8RB
315
UGACCUGCUGUUAUUGGAGTG
321
CUCCAAUAACAGCAGGUCATT
771


 


IL8RB
2774
AAAUAUAGGCAGGUGGUUCTA
322
GAACCACCUGCCUAUAUUUTT
772


 


IL8RB
219
ACCUUGACGAUGAAACUUCTG
323
GAAGUUUCAUCGUCAAGGUTT
773


 


IL8RB
2389
UUUCAAGGUUCGUCCGUGUTG
324
ACACGGACGAACCUUGAAATT
774


 


IL8RB
385
UGAGGUAAACUUAAAUCCUGA
325
AGGAUUUAAGUUUACCUCATT
775


 


IL8RB
1347
UUCUGGCCAAUGAAGGCGUAG
326
ACGCCUUCAUUGGCCAGAATT
776


 


IL8RB
2649
UUUAAGUGUCAAUUUAGUGGC
327
CACUAAAUUGACACUUAAATT
777


 


IL8RB
1737
UAGAACAUAGAGUGCCAUGGG
328
CAUGGCACUCUAUGUUCUATT
778


 


IL8RB
455
AAUUACUAAGAUCUUCACCTT
329
GGUGAAGAUCUUAGUAAUUTT
779


 


IL8RB
965
UAACAUUGGAUGAGUAGACGG
330
GUCUACUCAUCCAAUGUUATT
780


 


IL8RB
1740
UCUUAGAACAUAGAGUGCCAT
331
GGCACUCUAUGUUCUAAGATT
781


 


IL8RB
2632
UGGCAUUAAGUCACAUUGCGG
332
GCAAUGUGACUUAAUGCCATT
782


 


IL8RB
2755
UAGCCUUGGUUUAAUCAGCCT
333
GCUGAUUAAACCAAGGCUATT
783


 


IL8RB
2183
UUCUUGUGGGUCAAUUCCUAT
334
AGGAAUUGACCCACAAGAATT
784


 


IL8RB
2605
UAUCACUACUGUUUAUCUGCA
335
CAGAUAAACAGUAGUGAUATT
785


 


IL8RB
2340
UCAGGCUGAAGGAUACUUCGT
336
GAAGUAUCCUUCAGCCUGATT
786


 


IL8RB
2143
UGUGUUAAUUCUAUGUCUGAA
337
CAGACAUAGAAUUAACACATT
787


 


IL8RB
998
UAUUGUUGCCCAUGUCCUCAT
338
GAGGACAUGGGCAACAAUATT
788


 


IL8RB
2180
UUGUGGGUCAAUUCCUAUAAG
339
UAUAGGAAUUGACCCACAATT
789


 


IL8RB
2185
AUUUCUUGUGGGUCAAUUCCT
340
GAAUUGACCCACAAGAAAUTT
790


 


IL8RB
307
UGUUAUUGGAGUGGCCACCGA
341
GGUGGCCACUCCAAUAACATT
791


 


IL8RB
2481
UCUGUAAAUUUGUUCACUCTC
342
GAGUGAACAAAUUUACAGATT
792


 


IL8RB
2617
UUGCGGUACAACUAUCACUAC
343
AGUGAUAGUUGUACCGCAATT
793


 


IL8RB
956
AUGAGUAGACGGUCCUUCGGA
344
CGAAGGACCGUCUACUCAUTT
794


 


IL8RB
456
UAAUUACUAAGAUCUUCACCT
345
GUGAAGAUCUUAGUAAUUATT
795


 


IL8RB
226
UGAAACAACCUUGACGAUGAA
346
CAUCGUCAAGGUUGUUUCATT
796


 


IL8RB
1394
UGAUCAAGCCAUGUAUAGCTA
347
GCUAUACAUGGCUUGAUCATT
797


 


IL8RB
458
UGUAAUUACUAAGAUCUUCAC
348
GAAGAUCUUAGUAAUUACATT
798


 


IL8RB
881
UGAAUUUGACCAAGUAGCGCT
349
CGCUACUUGGUCAAAUUCATT
799


 


IL8RB
2327
UACUUCGUUAGGUACAUAUCA
350
AUAUGUACCUAACGAAGUATT
800


 


Fas
109
UGUAGUAACAGUCUUCCUCAA
351
GAGGAAGACUGUUACUACATT
801


 


Fas
41
UGGACGAUAAUCUAGCAACAG
352
GUUGCUAGAUUAUCGUCCATT
802


 


Fas
161
UAUGGCAGAAUUGGCCAUCAT
353
GAUGGCCAAUUCUGCCAUATT
803


 


Fas
182
UUUCACCUGGAGGACAGGGCT
354
CCCUGUCCUCCAGGUGAAATT
804


 


Fas
62
UCACUUGGGCAUUAACACUTT
355
AGUGUUAAUGCCCAAGUGATT
805


 


Fas
377
ACUUCCUCUUUGCACUUGGTG
356
CCAAGUGCAAAGAGGAAGUTT
806


 


Fas
349
UGAGUGUGCAUUCCUUGAUGA
357
AUCAAGGAAUGCACACUCATT
807


 


Fas
245
UCCCUUCUUGGCAGGGCACGC
358
GUGCCCUGCCAAGAAGGGATT
808


 


Fas
205
GACUGUGCAGUCCCUAGCUTT
359
AGCUAGGGACUGCACAGUCTT
809


 


Fas
145
AUCAUGAUGCAGGCCUUCCAA
360
GGAAGGCCUGCAUCAUGAUTT
810


 


Fas
123
UUCUGAGUCUCAACUGUAGTA
361
CUACAGUUGAGACUCAGAATT
811


 


Fas
34
UAAUCUAGCAACAGACGUAAG
362
UACGUCUGUUGCUAGAUUATT
812


 


Fas
114
UCAACUGUAGUAACAGUCUTC
363
AGACUGUUACUACAGUUGATT
813


 


Fas
115
CUCAACUGUAGUAACAGUCTT
364
GACUGUUACUACAGUUGAGTT
814


 


Fas
28
AGCAACAGACGUAAGAACCAG
365
GGUUCUUACGUCUGUUGCUTT
815


 


Fas
122
UCUGAGUCUCAACUGUAGUAA
366
ACUACAGUUGAGACUCAGATT
816


 


Fas
186
UUCCUUUCACCUGGAGGACAG
367
GUCCUCCAGGUGAAAGGAATT
817


 


Fas
42
UUGGACGAUAAUCUAGCAACA
368
UUGCUAGAUUAUCGUCCAATT
818


 


Fas
111
ACUGUAGUAACAGUCUUCCTC
369
GGAAGACUGUUACUACAGUTT
819


 


Fas
144
UCAUGAUGCAGGCCUUCCAAG
370
UGGAAGGCCUGCAUCAUGATT
820


 


Fas
92
UCAAUUCCAAUCCCUUGGAGT
371
UCCAAGGGAUUGGAAUUGATT
821


 


Fas
201
GUGCAGUCCCUAGCUUUCCTT
372
GGAAAGCUAGGGACUGCACTT
822


 


Fas
128
CCAAGUUCUGAGUCUCAACTG
373
GUUGAGACUCAGAACUUGGTT
823


 


Fas
36
GAUAAUCUAGCAACAGACGTA
374
CGUCUGUUGCUAGAUUAUCTT
824


 


Fas
162
UUAUGGCAGAAUUGGCCAUCA
375
AUGGCCAAUUCUGCCAUAATT
825


 


Fas
127
CAAGUUCUGAGUCUCAACUGT
376
AGUUGAGACUCAGAACUUGTT
826


 


Fas
202
UGUGCAGUCCCUAGCUUUCCT
377
GAAAGCUAGGGACUGCACATT
827


 


Fas
82
UCCCUUGGAGUUGAUGUCAGT
378
UGACAUCAACUCCAAGGGATT
828


 


Fas
160
AUGGCAGAAUUGGCCAUCATG
379
UGAUGGCCAAUUCUGCCAUTT
829


 


Fas
150
UGGCCAUCAUGAUGCAGGCCT
380
GCCUGCAUCAUGAUGGCCATT
830


 


Fas
63
GUCACUUGGGCAUUAACACTT
381
GUGUUAAUGCCCAAGUGACTT
831


 


Fas
164
GCUUAUGGCAGAAUUGGCCAT
382
GGCCAAUUCUGCCAUAAGCTT
832


 


Fas
37
CGAUAAUCUAGCAACAGACGT
383
GUCUGUUGCUAGAUUAUCGTT
833


 


Fas
116
UCUCAACUGUAGUAACAGUCT
384
ACUGUUACUACAGUUGAGATT
834


 


Fas
32
AUCUAGCAACAGACGUAAGAA
385
CUUACGUCUGUUGCUAGAUTT
835


 


Fas
64
AGUCACUUGGGCAUUAACACT
386
UGUUAAUGCCCAAGUGACUTT
836


 


Fas
167
AGGGCUUAUGGCAGAAUUGGC
387
CAAUUCUGCCAUAAGCCCUTT
837


 


Fas
120
UGAGUCUCAACUGUAGUAACA
388
UUACUACAGUUGAGACUCATT
838


 


Fas
125
AGUUCUGAGUCUCAACUGUAG
389
ACAGUUGAGACUCAGAACUTT
839


 


Fas
43
UUUGGACGAUAAUCUAGCAAC
390
UGCUAGAUUAUCGUCCAAATT
840


 


Fas
94
CCUCAAUUCCAAUCCCUUGGA
391
CAAGGGAUUGGAAUUGAGGTT
841


 


Fas
159
UGGCAGAAUUGGCCAUCAUGA
392
AUGAUGGCCAAUUCUGCCATT
842


 


Fas
110
CUGUAGUAACAGUCUUCCUCA
393
AGGAAGACUGUUACUACAGTT
843


 


Fas
31
UCUAGCAACAGACGUAAGAAC
394
UCUUACGUCUGUUGCUAGATT
844


 


Fas
38
ACGAUAAUCUAGCAACAGACG
395
UCUGUUGCUAGAUUAUCGUTT
845


 


Fas
118
AGUCUCAACUGUAGUAACAGT
396
UGUUACUACAGUUGAGACUTT
846


 


Fas
169
ACAGGGCUUAUGGCAGAAUTG
397
AUUCUGCCAUAAGCCCUGUTT
847


 


Fas
33
AAUCUAGCAACAGACGUAAGA
398
UUACGUCUGUUGCUAGAUUTT
848


 


Fas
163
CUUAUGGCAGAAUUGGCCATC
399
UGGCCAAUUCUGCCAUAAGTT
849


 


Fas
233
AGGGCACGCAGUCUGGUUCAT
400
GAACCAGACUGCGUGCCCUTT
850


 


IGF2R
6340
UUUGUCACCUAUGACACCCAG
401
GGGUGUCAUAGGUGACAAATT
851


 


IGF2R
2936
UUAUAGAGCAAGCCUGGUCTG
402
GACCAGGCUUGCUCUAUAATT
852


 


IGF2R
1331
UCUGAUUGUGGUAUCUUCCTG
403
GGAAGAUACCACAAUCAGATT
853


 


IGF2R
4491
UAUUUCAGGACAAUUAUGCCA
404
GCAUAAUUGUCCUGAAAUATT
854


 


IGF2R
2562
UUAAUGUAGUAUUUCCUCCAC
405
GGAGGAAAUACUACAUUAATT
855


 


IGF2R
1456
UUUCCCAUCGUUACCUGCGGT
406
CGCAGGUAACGAUGGGAAATT
856


 


IGF2R
2253
UAGUUCAGUUGGAUCAUCCCA
407
GGAUGAUCCAACUGAACUATT
857


 


IGF2R
3570
UUGCCUUCUGACACUAAGCAA
408
GCUUAGUGUCAGAAGGCAATT
858


 


IGF2R
2274
UUAUAGGGUGUGCCGCCUCTG
409
GAGGCGGCACACCCUAUAATT
859


 


IGF2R
1197
UUUCCAUCUGAAAUAUAGGAT
410
CCUAUAUUUCAGAUGGAAATT
860


 


IGF2R
897
UUGCGCACCAGCUUCAGUCCG
411
GACUGAAGCUGGUGCGCAATT
861


 


IGF2R
5205
UUGAUGUAGAAAUCAGGGUTG
412
ACCCUGAUUUCUACAUCAATT
862


 


IGF2R
8904
UUCUCAGCAAUAGAACACCAG
413
GGUGUUCUAUUGCUGAGAATT
863


 


IGF2R
8604
UAAGGCUUCUUAUAGGUCGAA
414
CGACCUAUAAGAAGCCUUATT
864


 


IGF2R
3629
UCAAAGAUCCAUUCGCCGCGG
415
GCGGCGAAUGGAUCUUUGATT
865


 


IGF2R
4344
UUGAUGAGGUAGUGCUCCGGG
416
CGGAGCACUACCUCAUCAATT
866


 


IGF2R
1419
UUUAUGACGCUCAUCCGCUGA
417
AGCGGAUGAGCGUCAUAAATT
867


 


IGF2R
7185
UAUUUGUAGGACACGUUGGAA
418
CCAACGUGUCCUACAAAUATT
868


 


IGF2R
4447
UACCCUGCCGAGGUUCACGGG
419
CGUGAACCUCGGCAGGGUATT
869


 


IGF2R
3706
UAUCUGAGCACACUCAAACGT
420
GUUUGAGUGUGCUCAGAUATT
870


 


IGF2R
6422
UCUUUGUACAGGUCAAUUCTA
421
GAAUUGACCUGUACAAAGATT
871


 


IGF2R
1306
UUUGACUUGAGAGGUAUCGCT
422
CGAUACCUCUCAAGUCAAATT
872


 


IGF2R
6129
UUGUGUUUCUGGACGAAUUTG
423
AAUUCGUCCAGAAACACAATT
873


 


IGF2R
5105
UAGAGCUUCCAUUCCUCACGG
424
GUGAGGAAUGGAAGCUCUATT
874


 


IGF2R
4572
UUCACUUGGCUCUCGCUGCAG
425
GCAGCGAGAGCCAAGUGAATT
875


 


IGF2R
5308
UACCCGGCCGAUAUCUAUGGG
426
CAUAGAUAUCGGCCGGGUATT
876


 


IGF2R
3153
UUCUCAAUUCCGACUGGCCTT
427
GGCCAGUCGGAAUUGAGAATT
877


 


IGF2R
9029
UAUUACAGUAAAGUUGAUUGA
428
AAUCAACUUUACUGUAAUATT
878


 


IGF2R
1530
UUAACACAGGCGUAUUCCGTG
429
CGGAAUACGCCUGUGUUAATT
879


 


IGF2R
8364
AAAUGUGCUCUGUACGCCCAG
430
GGGCGUACAGAGCACAUUUTT
880


 


IGF2R
5400
UAGUUGAAAUGCUUGUCCGCT
431
CGGACAAGCAUUUCAACUATT
881


 


IGF2R
6702
UUGGCUCCAGAGCACGCCGGG
432
CGGCGUGCUCUGGAGCCAATT
882


 


IGF2R
8479
UUCUCUGACACCUCAACUCCA
433
GAGUUGAGGUGUCAGAGAATT
883


 


IGF2R
4723
UAAGGAGCUCAGAUCAAACAG
434
GUUUGAUCUGAGCUCCUUATT
884


 


IGF2R
4237
UGAACAUUCAGUCAGAUCGAA
435
CGAUCUGACUGAAUGUUCATT
885


 


IGF2R
6203
UAUAGUACGAGACUCCGUUGT
436
AACGGAGUCUCGUACUAUATT
886


 


IGF2R
753
AUGAAUAGAGAAGUGUCCGGA
437
CGGACACUUCUCUAUUCAUTT
887


 


IGF2R
8554
AUAAGCACAGUAAAGGUGGTA
438
CCACCUUUACUGUGCUUAUTT
888


 


IGF2R
5462
UUAACAGCUUAGGCGUUCCCA
439
GGAACGCCUAAGCUGUUAATT
889


 


IGF2R
1460
UUCCUUUCCCAUCGUUACCTG
440
GGUAACGAUGGGAAAGGAATT
890


 


IGF2R
5206
AUUGAUGUAGAAAUCAGGGTT
441
CCCUGAUUUCUACAUCAAUTT
891


 


IGF2R
2559
AUGUAGUAUUUCCUCCACGTG
442
CGUGGAGGAAAUACUACAUTT
892


 


IGF2R
8605
UUAAGGCUUCUUAUAGGUCGA
443
GACCUAUAAGAAGCCUUAATT
893


 


IGF2R
4345
AUUGAUGAGGUAGUGCUCCGG
444
GGAGCACUACCUCAUCAAUTT
894


 


IGF2R
1187
AAAUAUAGGAUGAACCUCCGC
445
GGAGGUUCAUCCUAUAUUUTT
895


 


IGF2R
1184
UAUAGGAUGAACCUCCGCUCT
446
AGCGGAGGUUCAUCCUAUATT
896


 


IGF2R
7190
UUGAGUAUUUGUAGGACACGT
447
GUGUCCUACAAAUACUCAATT
897


 


IGF2R
7182
UUGUAGGACACGUUGGAACTT
448
GUUCCAACGUGUCCUACAATT
898


 


IGF2R
2941
AUCCCUUAUAGAGCAAGCCTG
449
GGCUUGCUCUAUAAGGGAUTT
899


 


IGF2R
3693
UCAAACGUGAUCCUGGUGGAG
450
CCACCAGGAUCACGUUUGATT
900









Chemical Modification of RNA Strand Nucleotides

The siRNA according to the invention may comprise at least one modified nucleotide in at least one of the RNA strands. A range of potential modified nucleotides are disclosed elsewhere herein. Useful modifications and combinations of modifications for use according to the invention are shown in Table 2:







TABLE 2 







Chemical Modifications and Sequence Architecture










Modification



#
Name
Format





1
PS DNA o/h
    NNNNNNNNNNNNNNNNNNNsnsn




nsnsNNNNNNNNNNNNNNNNNNN


 


2
Full PS
    NsNsNsNsNsNsNsNsNsNsNsNsNsNsNsNsNsNsNsNsN




NsNsNsNsNsNsNsNsNsNsNsNsNsNsNsNsNsNsNsNsN


 


3
RNA o/h
  NNNNNNNNNNNNNNNNNNNNN




NNNNNNNNNNNNNNNNNNNNN


 


4
Blunt-ended
NNNNNNNNNNNNNNNNNNN




NNNNNNNNNNNNNNNNNNN


 


5
2′-OMe o/h
   NNNNNNNNNNNNNNNNNNNNpNp




NpNpNNNNNNNNNNNNNNNNNNN


 


6
2′-OMe/2′F
   NNNNNNNNNNNNNNNNNNNNpNp




NpNpNNNNNNNNNNNNNNNNNNN


 


7
LNA (3-7
    NNNNNNNNNNNNNNNNNNNsnsn



incorporations
nsnsNNNNNNNNNNNNNNNNNNN



in ds region)





N = any unmodified RNA nucleotide


n = unmodified DNA nucleotide


Np = modified RNA nucleotide


s = identifies phosphorthioate internucleoside linkage


o/h = overhang






The following modifications added to the 3′ position of the 3′-terminus of the siRNA strands, sometimes referred to as a ‘3’ end cap′ are also recognized as useful embodiments of the invention and may be used with any of the siRNA according to the invention:







Specific compounds with activity according to the invention include the following, shown in Table 3:








TABLE 3 







Sequences and Chemistries of siRNA used in Examples












Sequence (N: RNA; dN: DNA; n: 



Name
strand
2′-moe RNA; s: phosphorothioate)
SEQ ID NO













pGI3-siRNA
guide strand
UCG AAG UAC UCA GCG UAA
901




GdTdT




complement
CUU ACG CUG AGU ACU UCG
902



strand
AdTdT



 


pGL3 MOE o/h
guide strand
CUU ACG CUG AGU ACU UCG Atst
903


siRNA
complement
UCG AAG UAC UCA GCG UAA Gtst
904



strand




 


pGI3-C3-siRNA
guide strand
UCG AAG UAC UCA GCG UAA G-C3
905



complement
CUU ACG CUG AGU ACU UCG A-C3
906



strand




 


pGI3-C3-MOE-
guide strand
UCG AAG UAC UCA GCG UAa g-C3
907


siRNA
complement
CUU ACG CUG AGU ACU UCg a-C3
908



strand




 


VEGFR2-siRNA1
guide strand
UUG AGG UUU GAA AUC GAC
909




CdCdT




complement
GGU CGA UUU CAA ACC UCA
910



strand
AdTdT



 


VEGFR2-siRNA2
guide strand
UAA UUU GUU CCU GUC UUC
911




CdAdG




complement
GGA AGA CAG GAA CAA AUU
912



strand
AdTdT



 


siRNA control
guide strand
ACG UGA CAC GUU CGG AGA
913




AdTdT




complement
UUC UCC GAA CGU GUC ACG
914



strand
UdTdT



 


VEGFR2-C3-
guide strand
UUG AGG UUU GAA AUC GAC C-C3
915


siRNA1
complement
GGU CGA UUU CAA ACC UCA A-C3
916



strand




 


VEGFR2-C3-
guide strand
UAA UUU GUU CCU GUC UUC C-C3
917


siRNA2
complement
GGA AGA CAG GAA CAA AUU A-C3
918



strand




 


C3-siRNA 
guide strand
ACG UGA CAC GUU CGG AGA A-C3
919


control
complement
UUC UCC GAA CGU GUC ACG U-C3
920



strand




 


VEGFR2-C3-
guide strand
UUG AGG UUU GAA AUC GAc c-C3
921


MOE-siRNA1
complement
GGU CGA UUU CAA ACC UCa a-C3
922



strand




 


VEGFR2-C3-
guide strand
UAA UUU GUU CCU GUC UUc c-C3
923


MOE-siRNA2
complement
GGA AGA CAG GAA CAA AUu a-C3
924



strand




 


Tie2-C3-MOE-
guide strand
UUC UUC UUU AAU UAA CAc c-C3
925


siRNA1
complement
GGU GUU AAU UAA AGA AGa a-C3
926



strand




 


Tie2-C3-MOE-
guide strand
UCU GAG UUU GUA AAU AUc g-C3
927


siRNA2
complement
CGA UAU UUA CAA ACU CAg a-C3
928



strand




 


C3-MOE-siRNA
guide strand
ACG UGA CAC GUU CGG AGa a-C3
929


control
complement
UUC UCC GAA CGU GUC ACg t-C3
930



strand









EXAMPLES
The following Examples illustrate aspects of the invention, and are not intended to limit the embodiments included in the claims recited below. The results and discussion section further below refers to experiments conducted according to the following protocols and employing the following materials. Materials and protocols that are not specifically described are considered to be routinely available to those skilled in the art.
Example 1
Preparation of siRNAs.
Single strand siRNA derivatives were synthesized by standard 2′-O-TOM phosphoamidite technology and purified by Oasis® HLB Extraction Plates (Waters). Sense- and antisense stranded siRNA were mixed in hybridization buffer (100 mM potassium acetate, 2 mM magnesium acetate, 30 mM Hepes, pH 7.6) heat-denatured at 90° C. for 3 min and annealed at 37° C. for 60 min. 100 μM stock solutions of siRNA duplexes were stored at −20° C.
Example 2
Incubation in Serum and Analysis by IE-HPLC (LC-MS).
In a standard serum assay, 6 μL 20 μM of each siRNA were mixed with 54 μL serum or CSF and heated at 37° C. in an incubator. 50 μL of the cooled mixture was loaded on an analytical DNA-pac PA-100 Column (Dionex) and analyzed with a NaCl gradient (0-0.6 M in 30 min) in a 1:10 Acetonitrile:Buffer (20 mM sodium acetate, 1 mM magnesium acetate, pH 6.5) solution.
For LC-MS analysis 100 μL (20 μM or 50 μM) each siRNA was mixed with 900 μL sterile fetal bovine serum (GIBCO) incubated at 37° C. and separated by HPLC as indicated previously (except of the NaCl gradient: 0M-0.36M in 9′/0.36M-0.6M in 12′). Degradation products were desalted on NAP columns and analyzed by LC-ESI−-MS.
Example 3
Incubation in Gastric Acid
To prepare a standard gastric acid assay, FVB and C57BL6 mice, weighing 18 to 20 g (6 to 8 weeks old), were obtained from Charles River Laboratories (Les Oncins, France). Animals were sacrificed using CO2, and then stomachs were quickly recovered. Gastric fluid as well as stomach contents were collected and pooled, then loaded on centrifugal filter devices (Ultrafree MC, Millipores). Filter units were spun for 10 minutes according to manufacturer's recommendations. The filtrate, corresponding to mouse gastric fluid, was recovered, aliquoted and frozen prior further experiments.
For each assay, 20 μM of siRNA solutions were diluted in 9× volume of gastric acid as above described and incubated at 37° C. for 0, 5, 10, 15, 30, 60 and 120 min.
Example 4
Incubation in Intestinal Lavage
To prepare a standard intestinal lavage assay, Male Wistar rat were fasted, anesthetized with isoflurane. Intestinal lavage was obtained by in situ perfusion of the small intestine (duodenum, jejunum, ileum) with 10 mL saline (0.5 mL/min) followed by 20 mL water (1 mL/min) Outlet collected was centrifuged (3000×g, 15 min, 22° C.), and supernatant passed through a 1.2-nm filter and stored at −20° C.
For each assay, 20 μM siRNA solutions were diluted in 9× volume of intestinal lavage and incubated at 37° C. for 0, 15, 30, 60, 180 and 360 min.
Example 5
Incubation in Mouse Liver Microsomes
In a standard liver microsome assay, to 10 μl of a 250 μM solution of siRNA were added 25 μl of mouse liver microsomes (GEntest 452701 Charge 11) at 20 mg protein/ml, 365 μl of 100 mM phosphate buffer (pH 7.4), 50 μl of UDPGA cofactor (24 mM in water), 50 μl of NADPH. Incubation was quenched by freezing at t=0 min and t=60 min.
Example 6
Incubation in Rat S12 Supernatant
For a standard rat S12 supernatant assay, 10 μl of a 250 μM solution of siRNA were added to 17 μl of rat liver S12 at 29.9 mg protein/ml, 373 μl of 100 mM phosphate buffer (pH 7.4), 50 μl of UDPGA cofactor (24 mM in water), 50 μl of NADPH. Incubation was quenched by freezing at t=0 min and t=60 min.
Example 7
Incubation in Mouse Serum
For a standard incubation in mouse serum, 20 μM siRNA solutions were diluted in 9× volume of murine serum (Harlan nude mouse) and incubated at 37° C. for 0, 15, 30, 60, 180 and 360 min.
Example 8
Gel Electrophoresis Stability Assay
A 10 μL aliquot of incubation solution was taken immediately after shaking and shock-frozen on dry ice, the mixtures were incubated at 37° C. and aliquots were shock frozen at various time points. Aliquots were thawed in 30 μL (15 μL respectively) Loading Buffer (Elchrom Sc., Cham, Switzerland) and separated on a SF50 gels (Elchrom Sc., Cham, Switzerland) at 120 V, 8° C. for 240 min. Bands were stained with SYBR Gold (Molecular Probes) and picture were taken with a BIORAD ChemiDocTM XRS system.
Example 9
Cell Culture
The mouse immortalized endothelial cell line MS1 (ATCC CRL-2279) was grown in DMEM high glucose (4.5 g/1) supplemented with L-Glutamine and 10% heat-inactivated FCS (AMIMED, Switzerland) on 1.5% Gelatine-coated culture dishes. MS1 cells were transfected in 24 well-format with siRNA using HiPerfect (QIAGEN) according to manufacturer procedure (tetraplicate, final siRNA concentration was 10 nM or as indicated).
Example 10
FACS Analysis
Non-transfected and siRNA transfected MS1 cells were analyzed by FACS for VEGFR2 levels. Briefly, cells were trypsinized from duplicate or triplicate wells, pooled for each conditions, then washed twice with PBS+10% FCS and incubated 10 minutes on ice prior addition of RPE-conjugated anti-VEGFR2 Ab (1 μg/106 cells; Avas 12α1, BD Pharmingen). RPE-labeled isotype IgG2α were used as FACS control (BD Pharmingen). FACS acquisition and analysis were performed on a FACScalibur using Cell Quest Software (Becton-Dickinson).
Example 11
Animal Studies
Female FVB mice (6 to 8 weeks old), were obtained from Charles River Laboratories (Les Oncins, France). Mice were identified via ear markings and kept in groups (6 animals per cage) under normal conditions and observed daily. Six mice were used per treatment group and all animal experiments were performed in strict adherence to the Swiss law for animal protection.
The reference chamber model has been described in publications (e.g. Wood J, Bold G, Buchdunger E, et al. PTK787/ZK 222584, a novel and potent inhibitor of vascular endothelial growth factor receptor tyrosine kinases, impairs vascular endothelial growth factor-induced responses and tumor growth after oral administration. Cancer Res 2000; 60:2178-89) In brief, porous tissue chambers made of perfluoro-alkoxy-Teflon (Teflon®-PFA, 21 mm×8 mm diameter, 550 μl volume) were filled with 0.8% agar (BBL® Nr. 11849, Becton Dickinson, Meylan, France) and 20 U/ml heparin, (Novo Nordisk A/S, Bagsvaerd, Denmark) supplemented with or without 3 μg/ml recombinant human VEGF and siRNAs as indicated. Solutions were maintained at 42° C. prior the filling procedure. Mice were anesthetized using 3% Isoflurane (Forene®, Abbott AG, Cham, Switzerland) inhalation. For subcutaneous implantation, a small skin incision was made at the base of the tail to allow the insertion of an implant trocar. The chamber was implanted under aseptic conditions through the small incision onto the back of the animal. The skin incision was closed by wound clips (Autoclip 9 mm Clay Adams). Depending on the required dose, siRNAs were diluted in “injectable quality grade” 0.9% saline solution then delivered to animals either i.p. (200 μL/dose) or p.o. by gavage (100 μL/dose). The mice were receiving the first dose 2 to 4 hours before implanting chambers; then treated daily for 2 days. If not otherwise indicated, mice were sacrificed three days after implantation, chambers excised and the vascularized fibrous tissue formed around each implant carefully removed. Body weight was used to monitor the general condition of the mice. Statistical analysis was done using one-way ANOVA followed by Dunnett test.
Example 12
B16 Melanoma Xenograft Model
The syngeneic B16/BL6 murine melanoma model, previously identified to be responsive to antiangiogenic therapy (e.g. LaMontagne K, Littlewood-Evans A, Schnell C, O'Reilly T, Wyder L, Sanchez T, Probst B, Butler J, Wood A, Liau G, Billy E, Theuer A, Hla T, Wood J. Antagonism of sphingosine-1-phosphate receptors by FTY720 inhibits angiogenesis and tumor vascularization. Cancer Res. 2006 Jan. 1; 66(1):221-31), was used to evaluate the antitumor activity of standard or modified siRNAs. Tumor cells (1 μL, 5×104/μL) were injected intradermally into the dorsal pinna of both ears of syngeneic female C57BL/6 mice. Measurements of primary tumor area (mm2) were carried out on days 7, 14, and 21 after tumor cell inoculation using computer-assisted image analysis software (KS-400 3.0 imaging system, Zeiss) and a specifically designed macro. From days 7 to 21, mice were receiving siRNAs diluted in “injectable quality grade” 0.9% saline solution either i.p. (200 μL/dose) or p.o. by gavage (100 μL/dose) once a day. Mice were sacrificed on day 21, and cranial lymph node metastases were weighed and then frozen.
In these results, actual siRNA sequences and chemistries employed may be determined by reference to Table 3.
Wild-type siRNAs are Degraded in Mouse Serum from Both 3′-ends
Oligonucleotide degradation by nucleases is predominantly 3′-exonucleolytic. Modification of antisense oligonucleotides at their termini by the introduction of aromatic or lipophilic residues delays their nucleolytic degradation17. To verify whether this metabolic pathway would also be dominant for siRNA, we incubated at 37° C. a unmodified siRNA (wild-type siRNA) in mouse serum for up to 3 hours.
The unmodified siRNA sequence employed was pGl3-siRNA (see Table 3)
The mixtures were analyzed with Strong Anion Exchange HPLC at t=0 min., t=30 min, t=180 min.
As shown in FIGS. 1a, 1b and 1c, at t=30 min, a well defined peak corresponding to blunt ended siRNA was observed. By t=3 h substantial degradation is observed. FIG. 1d and 1e illustrate the metabolites identified by HPLC-ESI-MS analysis. This analysis revealed the presence of several metabolites corresponding to the loss of the 3′ overhangs and of the 3′-terminal first base pairing ribonucleotide on both strands. Digestion of the 5′-terminal ribonucleotide of the guide strand was also observed.
FIG. 1 suggests the degradation pathway of unmodified siRNAs in serum. DNA overhangs are first digested, possibly by 3′-exonucleases. In the LC-MS, additional metabolites were also detected which correspond to the loss of the first base-pairing 3′-ribonucleotide of both strands and also the first 5′-base-pairing ribonucleotide of the guide strand.
3′-modified siRNAs are Stable Through the GI Tract
siRNAs with 2′-methoxyethyl ribonucleotides overhangs (MOE o/h siRNA), blunt-ended siRNAs 3′-capped with a hydroxypropoxy phosphodiester moiety (C3-siRNA), and hydroxypropoxy phosphodiester 3′-capped siRNAs where the two first base paring nucleotide at 3′-end of each strand were modified by 2′-methoxyethyl ribonucleotides residues (C3-MOE siRNA) were synthesized. These compounds are illustrated schematically in FIG. 2.
First siRNAs were incubated in mouse gastric acid for 2 h (FIG. 3). No degradation was observed in the cases of C3 siRNA and C3-MOE sRNA, while degradation of wild-type siRNA was observed after 30 minutes.
Stability in intestinal fluid obtained from intestinal lavage of rats revealed almost complete degradation of wild-type siRNA after 15 minutes whereas parent compound in the MOE o/h siRNA, C3-siRNA and C3-Moe siRNA were observed for 60 minutes. (FIG. 4)
Stability in liver was evaluated using a liver microsome assay and a S12 assay (representative of liver cytosolic enzymatic activity). Results are shown in FIG. 5. In both cases, no degradation was observed after 60 minutes of incubation.
Finally, siRNAs were tested in mouse serum by incubation at 2 micromolar for up to 6 hours at 37° C. (results in FIG. 6). Parent compound stability was followed by gel electrophoresis. In the cases of modified siRNAs (C3 siRNA, C3-MOE siRNA of MOE o/h siRNA), no significant degradation was observed while the wild-type siRNA
This study indicate that wild type (unmodified) siRNAs are metabolized in mouse gastric acid and in mouse serum. In case of 3′-ends modified siRNAs, no degradation was observed in the GI tract. Therefore it is likely that 3′-modified siRNAs will have a higher oral bioavailability than wild-type siRNAs
Systemically Delivered 3′-modified siRNAs are More Active in an in vivo Growth Factor Induced Angiogenesis Model18.
Firstly, the ability of modified siRNAs (C3-siRNA and CE-MOE siRNA) to down regulate a target gene was checked in cellulo by measuring VEGFR2 surface level of MS1 cells transfected with anti-VEGFR2 siRNAs.
Pools of 2 anti VEGFR2 siRNAs as wild-type siRNAs, C3-siRNAs and C3-MOE siRNAs were administered intraperitoneally. Results are shown in FIG. 7. Pooled Wild type siRNAs reduced significantly the VEGF induced vascularization at the higher dose of 25 micrograms per mice per day. The same level of inhibition was observed at a 5-fold lower dose with C3-siRNA. In the case of the C3-MOE siRNAs pool, significant reduction of vascularized tissue weight was observed at all tested doses including the lowest 0.2 microgram per mouse per day.
FIGS. 8a and 8b show that, when given intraperitoneally, both VEGFR2-C3 and C3-MOE siRNAs were active at below 1 microgram per mouse per day dose.
In vivo testing of anti-VEGFR2 C3-MOE siRNA given intraperitoneally (i.p.) in a B16 homograft melanoma tumor mouse model. FIG. 9a shows that i.p. treatment with modified VEGFR2-C3-MOE-siRNA significantly reduces tumour development. FIG. 9b also shows that i.p. injection of VEGFR2-C3-MOE-siRNA at 20 ug per mouse results in significant inhibition of tumour growth.
Oral Delivery of siRNA for Treatment of Angiogenic Disorders
FIG. 10 shows that given orally, at a dose of 20 micrograms per mouse per day, the VEGFR2-C3-MOE-siRNA1 reduced vascularization weight down to basal level (e.g. weight without growth factor induction). Actual siRNA sequences used are referred to in Table 3.
Anti Tie2 C3-MOE siRNAs were also tested in the growth factor induced angiogenesis model under both intraperitoneal and oral deliveries. FIGS. 11a and 11b show that given orally, both C3-MOE siRNAs directed at Tie2 were active at 20 microgram per mouse per day. Actual siRNA sequences used may be determined by reference to Table 3.
The data shows that 3′-end modified siRNAs with or without additional internal modifications are able to demonstrate therapeutic effect at reasonable doses upon oral administration.
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## Claims

1. Short interfering ribonucleic acid (siRNA), comprising two strands that are complementary to each other over at least 15 nucleotides,
wherein each strand comprises 49 nucleotides or less,
wherein the first two base-pairing nucleotides at the 3′ end of each strand are 2′-methoxyethyl ribonucleotide residues, and
wherein a 3′-terminus of at least one strand containing a 2′-methoxyethyl ribonucleotide comprises a modification at the 3′ carbon, wherein the modification is selected from the group consisting of:

2. The siRNA according to claim 1, wherein at least one additional nucleotide is modified with a modification.

3. The siRNA of claim 2, wherein the modification is selected from 2′-OMe, 2′-F, 2′-Oallyl, 2′-MOE, Locked Nucleic Acid, phosphorothioate, and boranophosphate.

4. The siRNA of claim 1, wherein each strand is 19 nucleotides.

5. The siRNA according to claim 1, wherein said siRNA comprises modified nucleotides selected from among nucleotides having a modified internucleoside linkage selected from among phosphorothioate, phosphorodithioate, phosphoramidate, boranophosphonoate, and amide linkages.

6. The siRNA according to claim 1, wherein said two RNA strands are fully complementary to each other.

7. The siRNA according to claim 1, comprising a 1 to 9 nucleotide overhang on at least one of the 5′ end or 3′ end.

8. The siRNA according to claim 1, wherein the two strands are complementary to each other for 19 nucleotides.

9. The siRNA according to claim 1, wherein one end of the siRNA is blunt-ended.

10. The siRNA according to claim 1, wherein both ends of the siRNA are blunt-ended.

11. The siRNA according to claim 1, wherein both ends are blunt-ended, and the two strands are complementary to each other for 19 nucleotides.

12. A composition comprising a siRNA of claim 1 and a pharmaceutically acceptable carrier.

13. Short interfering ribonucleic acid (siRNA) comprising two strands that are complementary to each other over at least 15 nucleotides, wherein each strand comprises 49 nucleotides or less, and wherein the first two base-pairing nucleotides at the 3′ end of each strand are 2′-methoxyethyl (2′-MOE) ribonucleotide residues, and
wherein at least one additional nucleotide is modified with a modification selected from 2′-OMe, 2′-F, 2′-O-allyl, 2′-MOE, Locked Nucleic Acid, phosphorothioate, and boranophosphate, and
wherein a 3′-terminus of at least one strand containing a 2′-methoxyethyl ribonucleotide comprises a modification at the 3′ carbon, wherein the modification is selected from the group consisting of triethylene glycol, cyclohexyl, phenyl, and adamantane.