EMBO/SourceData huggingface dataset:
Figure 7A: Body weight was measured in control and siELDR treated mice. n=5 animal per groupB: Representative images of tumors in control and treatment groups.C: Tumors were measured using a slide caliper and tumor volumes were calculated. Arrow indicates starting point siELDR treatment. n=5 animal per group and tumor volume presented as the mean ± SDD: ELDR knockdown was examined by analyzing expression of ELDR in treated tumors compared to the control tumors. 18S rRNA gene was used as internal control. n=5 animal per group and 3 technical replicates from each tumor.E: Control or siELDR treated tumor lysates were subjected to Western blot analysis for EGFR and Cyclin E1expression using specific antibodies and representative bands are shown. The blot was reprobed with an antibody against Actin for normalization. Right panels show quantitation. n= 3 biological replicates from each tumorF: OSCC-PDX tissue was implanted subcutaneously into the flank of NSG mice. When the tumor volume reached >70 mm3, mice were divided into two groups. 10µg of siELDR or control oligoes were injected intratumorally as described above. Body weight was measured in control and siELDR treated mice. n=5 animal per groupG: Representative images of OSCC-PDX tumors in control and treatment groups.H: PDX tumors were measured using a slide caliper and tumor volumes were calculated. n=5 animal per group and tumor volume presented as the mean ± SDI: ELDR knockdown was examined by analyzing expression of ELDR in treated OSCC-PDX tumors compared to the control tumors. 18S gene was used as internal control. n=5 animal per group and 3 technical replicates presented as the mean ± SD
Figure 1Immunohistochemistry performed on 12 month-old THY-Tau22 mice showing AT100-positive neurons (green), CBP-positive nuclei (red) and DAPI-stained nuclei (blue) in the CA1 region of the dorsal hippocampus. A representative image is shown with a focus. Scale bars: 40µm and 20µm as noted. (n=5 mice). Arrows depict neurons bearing neurofibrillary tangles and do not display CBP immunostaining. The star depicts a ghost tangle (AT100-positive neuron and no nucleus)Western blot analyses perfomed in the dorsal hippocampus of 12 month-old THY-Tau22 mice compared to age-matched controls. NeuN, actin, tubulin and total H2B levels are not changed. Phosphorylated tau on serine 404 (Tau-Ph404) attest for samples from tauopathic mice. Quantification represents the ration of the protein level detected on the total amount of proteins on the membranes, with WT arbitrarily set at 1 (fold induction). Bar graphs are mean ± SEM. n=5-7/group as noted, multiple t tests, CBP * p=0.003 and GFAP **p=0.0001 for THY-Tau vs. WT miceRNA-sequencing data performed in the hippocampus of 8 month-old mice. Functional analyses (DAVID GOTERM) performed on significantly deregulated genes in THY-Tau22 mice compared to WT mice. Representative genes are presented below. |log2 Fold Change| > 0.2; * indicates FDR<0.05. IEG, Immediate Early Genes. Predicted promoter motif (right) analyses performed with GREAT. Groups: WT mice (n=3), THY-Tau22 mice (n=2)Long-term spatial memory testing: Mice were injected 3 times (1 per week) with Vehicle (WT mice saline, WT VEH, n=17), Vehicle (THY-Tau22 mice CSP, 500 μg /mouse, TAU VEH, n=10) or Molecule (THY-Tau22 mice CSP-TTK21, 500 μg/mice TAU MOL, n=13) before training of spatial memory in the Morris water maze (MWM); retention (Probe test) was tested 10 days after the last training session. Acquisition (Escape latencies, seconds) and retention performances (Time in target quadrant, seconds) are shown for the 3 groups of mice. All groups of mice displayed significant acquisition of the platform location (Day effect, F(4,148)= 26.45, p<0.001; Group and Group X Day effects, ns), but only TAU VEH exhibited impaired retention. CSP-TTK21 treatment fully restored the ability of THY-Tau22 mice to remember the platform location. Bar graphs are mean ± SEM. Student's t test to a constant value, # when compared to random (dotted line, 15sec) WT VEH, t(16)=4.6323, #p=0.0002; TAU VEH, t(9)=0.3606, p=0.7267; TAU MOL, t(12)=3.945, #p=0.0019. One-way ANOVA; F(2,37)= 3.55; p= 0.03; * in the different comparisons: TAU MOL vs. TAU VEH, *p=0.0166; WT VEH vs. TAU VEH, *p= 0.040; TAU MOL vs WT VEH, non significant p=0.437). TQ, Target Quadrant; O, Other, corresponds to the mean of the 3 other quadrants
Figure 3Volcano plot showing that 2756 genes are differentially regulated between THY-Tau22 and WT mice during learning. The log2(Fold-Change) was estimated by DESeq2. FDR<0.05 and |log2 Fold Change| > 0.2. Red dots correspond to genes with adjusted p-value <0.05. Numbers in the corners represent the number of down-regulated (left) and up-regulated (right) genes. C Heatmap representing expression of z-score of the 2756 deregulated genes in all experimental conditions. Color-coding was performed according to the z-score of the normalized reads counts divided by gene length. Clustering was performed using the Unweighted Pair Group Method with Arithmetic mean method and the Pearson"s distance. Groups: WT VEH_HC (n=3), WT VEH (n=2); TAU VEH (n=2); TAU MOLVolcano plot showing that 1756 genes are differentially regulated between treated-THY-Tau22 and WT mice during learning. Same parameters as in BF, G Volcano plots showing differentially regulated genes by the molecule in THY-Tau22 mice (F) and by learning in WT mice (G). Same parameters as in B
Figure 4Heatmap representing expression z-score of the 98 significantly over-expressed genes in the TAU MOL vs. TAU VEH comparison, for all experimental conditions. Color-coding was performed according to the z-score of the normalized reads counts divided by gene length. Clustering was performed using the Unweighted Pair Group Method with Arithmetic mean method and the Pearson"s disRNA-seq data showing expression of several immediate early genes (IEGs) : Nr4a1, Arc, Egr1, Dusp1, Fos and Junb. Most of the down-regulated IEGs in tauopathic compared to WT mice present a significant induction in THY-Tau22 mice after CSP-TTK21 injection. Adjusted p-values corresponding to p<0.05 are indicated by *, for WT VEH vs. WT VEH_HC, $ for TAU VEH vs. WT VEH and #, for TAU MOL vs. TAU VEHRNA-seq data showing that CSP-TTK21 treatment of tauopathic mice restored the expression of plasticity/memory-relevant target genes : Klotho (Kl), and Neurotensin (Nts). Adjusted p values corresponding to p<0.05 are indicated by *, for WT VEH vs. WT VEH_HC, $ for TAU VEH vs. WT VEH and #, for TAU MOL vs. TAU VEH. F RT-qPCR validations performed in a different cohort of mice from the RNA-seq study (n=4-5/group). One-way ANOVA with uncorrected Fisher"s test. Klotho, Kl: F(3,16)=2.949, p=0.0643; * learning p=0.0145 for WT VEH vs. WT VEH_HC, $ pathology p=0.0395 for WT VEH vs. TAU VEH. Nts: F(3,14)=4.290, p=0.0241; $ pathology p=0.0036 for WT VEH vs. TAU VEH, # molecule p=0.0081 for TAU MOL vs. TAWestern blot for Klotho and Neurotensin expression in the different experimental conditions. Immunoblot results are shown (n=5/group). Bar graphs represent the quantification of the protein levels as percentage of the control group WT VEH_HC, arbitrarily set at 100%. Each detected protein was normalized to the corresponding amount of total proteins in the gels or the nitrocellulose membrane. Klotho and Neurotensin were further normalized to the level of actin. One-way ANOVA with uncorrected Fisher"s test. Klotho: F(3,16)=5.192, p=0.0107, * learning p=0.0117 for WT VEH vs. WT VEH_HC, $ pathology p=0.0027 for WT VEH vs. TAU VEH, # molecule p=0.0282 for TAU MOL vs. TAU VEH. Nts: F(3,16)=3.748, p=0.0326, $ pathology p=0.0200 for WT VEH vs. TAU VEH, # molecule p=0.0079 for TAU MOL vs. TA
Figure 5A Functional annotation charts (Benjamini, p<0.05) using using DAVID (GOTERM_Cellular Component) perfomed on the 82 significantly down-regulated genes by CSP-TTK21 treatment in tauopathic mice (TAU MOL vs. TAU VEH), showing a significant association with neuronal terms. Significance is indicated as -log10(Benjamini p_value). B Heatmap representing expression z-score of the 82 significantly down-regulated genes in the TAU MOL vs. TAU VEH comparison, for all experimental conditions. Color-coding was performed according to the z-score of the normalized reads counts divided by gene length. Clustering was performed using the Unweighted Pair Group Method with Arithmetic mean method and the Pearson"s disC RNA-seq data showing expression of several genes belonging to « synapse » annotation (DAVID): Grik4, Homer3 and Sv2b, which are significantly down-regulated by CSPTTK21 treatment in THY-Tau22 mice. Adjusted p values corresponding to p<0.05 are indicated by * for WT VEH vs. WT VEH_HC, $ for TAU VEH vs. WT VEH and #, for TAU MOL vs. TAU VEH
Figure 6Mean H2Bac profiles at TSS relative to gene expression obtained from RNA-seq data. Expressed genes were separated into 4 groups (Q1 to Q4, 6483 genes/group), Q1 representing the less expressed genes (0-25%) and Q4, the most expressed genes (75-100%). Profiles were established with SeqMiner centered on TSS ±2Kb. C Mean H2Bac profiles established with SeqMiner for all genes at TSS (top) and gene bodies (bottom) for the 4th quartile (most expressed genes) in the two replicates (rep1 and rep2). Significance (Benjamini, p<0.05) of the annotations associated with both TSS (green) or Gene profiles (red) are shown (DAVID, KEGG Pathways)Differentially regulated H2Bac peaks were analyzed with SICER and significant Fold Changes (FC>1; FDR<0.001) between comparisons are shown for the pathology (TAU VEH vs. WT VEH, blue) and the effect of the molecule (TAU MOL vs. TAU VEH, red). Fold Change is shown as log2 (Fold Change) (X-axis) and significance, as -log10(FDR) (Y-axis)Mean H2Bac and H3K27ac profiles established with SeqMiner for the 1624 decreased peaks obtained in the comparison TAU VEH vs. WT VEH. H2Bac but not H3K27ac peaks show differential regulationTime series Like plot. For every significant H2Bac decreased regions (1624) in WT VEH vs TAU VEH, normalized read counts were computed for each of the different conditions (WT VEH, TAU VEH, TAU MOL). Fold changes are all referring to WT VEH. Y-axis: Fold change. X-axis: Conditions
Figure 7A Mean enrichment profiles performed with SeqMiner presenting the genomic distribution of H2Bac and H3K27ac reads obtained in ChIP-seq experiments in the different experimental groups, established along putative neuronal CBP enhancers (± 4Kb) (Kim et al., 2010). In the dorsal hippocampus, H2Bac levels are enriched at CBP enhancers in WT WEH (blue), decreased in tauopathic mice (TAU VEH, pink) and induced by CSP-TTK21 treatment (TAU MOL, green). B Mean profiles were separated in two sets of loci, including 17817 peaks highly enriched in H2Bac and showing a differential regulation in the experimental groups and 23331 peaks that were poorly enriched in H2Bac and not regulatedMean profiles established with SeqMiner for all genes at TSS for H2Bac (Left) and H3K27ac (Right). H2Bac but not H3K24ac presents a differential regulation at TSSMean H2Bac profiles established with SeqMiner on the differentially regulated genes obtained in transcriptomic experiments (RNA-seq), either decreased (left) or increased (right). The 'basal' H2Bac TSS enrichment state of these genes is differentially regulated whether the genes are decreased or increased in response to learningUCSC genome browser view of the c-fos genomic locus with H3K27ac ChIP-seq (blue), H2Bac ChIP-seq (green) and Input (black) signals. Blue shading indicates locations of the c-fos enhancers (Joo et al., 2016); gray shading indicates location of the promoter. Differential peaks were analyzed with SICER. This set of data shows that H2Bac levels were significantly decreased at e1 (FDR=1.95.10-08), e2 (FDR=0.0005) and e5 (FDR= 2.44.10-05) enhancers in THY-Tau22 compared to WT mice, and significantly enriched at e1 (FDR= 4.01.10-08) the regions encompassing e3, e4 and TSS (FDR=7.53.10-07) and e5 (FDR= 0.001) after CSP-TTK21 treatment. Expanded View Figure Legend
Figure 1Immunoblotting of SPATC1L in testicular cells (TC), testicular sperm (TS), and epididymal sperm (S). An anti-ADAM2 antibody was used as a control.Expression of SPATC1L in human testis lysates (TL) and mature sperm (S). An anti-α-tubulin antibody was used as a control.Developmental expression pattern of SPATC1L in testis, examined by immunoblotting using total lysates obtained from prepubertal and adult male mice (days 7, 14-21, 28, 35, 42, 49, and 56). An anti-α-tubulin antibody was used as a control.Localization of SPATC1L in germ cells during spermatogenesis. Isolated spermatogenic cells were immunostained for SPATC1L (red) and γ-tubulin (green). γ-Tubulin was used as a centrosome marker, and cells were counterstained with the nuclear dye Hoechst 33342 (blue). Fluorescence images of individual staining are shown at the top and merged images are shown in the middle. Insets are magnified iamges. Sc, spermatocyte; RS, round spermatid; ES, elongating spermatid; TS, testicular sperm; MS, epididymal mature sperm; BF, overlay with bright field image.
Figure 2Immunoprecipitation of SPATC1L in the testis using an anti-SPATC1L antibody. IgG was used as a control. In, input; IgG, normal rabbit serum.Interaction between SPATC1L and PKA subunits. Samples precipitated with an anti-SPATC1L antibody were analyzed by immunoblotting with anti-RIα and anti-Cα antibodies. Immunoprecipitation of SPATC1L was confirmed by immunoblotting with anti-SPATC1L antibody. IgG was used as a control. IP, immunoprecipitation; In, input; IgG, immunoglobulin G from normal rabbit serum.Expression of PKA subunits during spermatogenesis, examined by immunoblotting for RIα and Cα in testicular cells (TC), testicular sperm (TS), and epididymal sperm (S). Anti-ADAM2 and anti-α-tubulin antibodies were used as controls.Localization of SPATC1L and RIα during spermatogenesis. Isolated spermatogenic cells were immunostained for SPATC1L (red) and RIα (green), and counterstained with the nuclear dye Hoechst 33342 (blue). Overlay with bright field image is shown at right in each cell type. TC, testicular cell (spermatocyte); RS, round spermatid; ES, elongating spermatid; TS, testicular sperm. Scale bar = 5 μm.
Figure 3Mapping of the SPATC1L binding site on RIα by in vitro binding assay using purified GST-SPATC1L and His-RIα proteins consisting of regions 1-6. Purified GST protein only was used as a control. Binding was confirmed by immunoprecipitation using an anti-SPATC1L antibody followed by immunoblot analyses of RIα, detected using an anti-His antibody. In, input; Sup, supernatant; IP, immunoprecipitated protein.PKA activity after overexpression of SPATC1L or SPATC1LΔC. Graphs show the average PKA activity of Spatc1l-transfected cells (white bar) and Spatc1lΔC-transfected cells (black bar) in the presence or absence of cAMP, expressed relative to control cells (mock) as a percentage. Representative signals observed in the assay are shown above. The overexpression of SPATC1L was confirmed in every experiment by immunoblotting (data not shown).The amount of Cα associated with RIα in the presence or absence of SPATC1LΔC. After IP of RIα in cells overexpressing SPATC1LΔC or control, immunoblot analysis was performed using anti-Cα antibody. Graph shows densitometric analysis of Cα in relation to immunoprecipitated RIα in immunoblot analysis . In, input; IgG, immunoglobulin G from normal rabbit serum.
Figure 4PCR genotyping analysis of WT (Spatc1l+/+), heterozygous (Spatc1l+/-) and homozygous (Spatc1l-/-) mice.SPATC1L expression levels in testes obtained from WT, Spatc1l+/-, and Spatc1l-/- mice. An anti-GAPDH antibody was used as a control. Graph shows densitometric analysis of SPATC1L in relation to GAPDH in immunoblot analysis.Percentage of females that became pregnant after mating with WT (white bar), Spatc1l+/- (gray bar), and Spatc1l-/- (black bar) male mice. Male mice used: WT, n = 5; Spatc1l+/-, n = 6; Spatc1l-/-, n = 7. WT female mice used for mating with the indicated genotype: WT, n = 30; Spatc1l+/-, n = 36; Spatc1l-/-, n = 42. Vaginal plugs were observed in all mated females.Average litter size of pups produced by females mated with WT (white bar), Spatc1l+/- (gray bar), and Spatc1l-/- (black bar) male mice.
Figure 5Macroscopic appearance of adult testes from an 8-week-old WT (Spatc1l+/+), heterozygous (Spatc1l+/-) and homozygous (Spatc1l-/-) mice. Scale bar = 2 mm.Comparison of testis weight in WT (white bar), Spatc1l+/- (gray bar), and Spatc1l-/- (black bar) mice. The organs were trimmed of fat and weighed. The average testis weight/body weight ratios for WT, Spatc1l+/-, and Spatc1l-/- males were 0.0034±0.0001, 0.0038±0.0003, and 0.0031±0.0002, respectively. Data are presented as means ± s.d. (n = 7).Macroscopic appearance of the adult epididymis from WT, Spatc1l+/-, and Spatc1l-/- mice. Scale bar = 2 mm.Epididymis weight in WT (white bar), Spatc1l+/- (gray bar), and Spatc1l-/- (black bar) mice. The average epididymis weight/body weight ratios for WT, Spatc1l+/-, and Spatc1l-/- males were 0.001±0.0001, 0.001±0.0001, and 0.001±0.00008, respectively. Data are presented as means ± s.d. (n = 7).Histological analysis of hematoxylin and eosin-stained sections of seminiferous tubules prepared from testes of WT and KO mice. Scale bar = 100 μm (upper) and 50 μm (lower).Number of mature epididymal sperm from WT (white bar), Spatc1l+/- (gray bar), and Spatc1l-/- (black bar) mice. Sperm were collected from the vas deferens. The average number of mature sperm in WT, Spatc1l+/-, and Spatc1l-/- males was (4.06 ± 0.40) × 106, (3.7 ± 0.7) × 106, and (3.93 ± 0.90) × 106, respectively. Data are presented as means ± s.d. (n = 5).Morphological analyses of epididymal sperm in WT, He and KO mice. Epididymal sperm were observed under an inverted microscope. The arrows indicate separated tails, black arrowheads indicate separated heads and white arrowheads indicate folded heads. Scale bar = 50 μm.Percentage of headless sperm from cauda epididymides of WT (black), Spatc1l+/- (gray), and Spatc1l-/- (white) mice. The average percentage of headless sperm in WT, Spatc1l+/-, and Spatc1l-/- males was 6.3, 52.9 and 100, respectively. Each dot represents percentage of headless sperm in an individual mouse, and medians are represented as horizontal lines. (n=13, *P < 0.001, Student's t-test).Immunostaining analysis of sperm heads and tails in WT and KO mice. Sperm tails were observed by immunostaining for α-tubulin antibody (red), and counterstaining with the nuclear dye Hoechst 33342 (blue). Sperm were also observed by differential interference contrast (DIC) microscopy. Scale bars = 20 μm (upper) and 5 μm (lower).
Figure 6Morphological analyses of Spatc1l-KO epididymal sperm by SEM. Sperm were obtained from the vas deferens of 8-week-old WT (Spatc1l+/+) and KO (Spatc1l-/-) mice. Sperm neck regions are magnified in lower panels. AC, acrosomal cap; MP, mid piece; BP, basal plates. Scale bar = 2 μm (upper) and 0.5 μm (lower).TEM analyses of flagella in WT and KO testicular sperm. TEM images represent ultrastructures of cross-sections of the midpiece (upper) and end piece (lower) of WT and KO testicular sperm. Ax, axonemal microtubules; Mt, mitochondrial sheath; ODF, outer dense fibers. Scale bars = 200 nm (upper) and 100 nm (lower).TEM analyses of the development of the connecting piece in WT (left) and KO (right) sperm. TEM images represent ultrastructures of longitudinal sections of elongating spermatids (ES) and testicular sperm (TS) in WT and KO mice. An, annulus; BP, basal plates; Cp, capitulum; Mc, manchette; Mt, mitochondria; Nu, nucleus; PCV, proximal centriolar vault; PM, plasma membrane; SC, segmented column. Scale bar = 500 nm.Ultrastructures of epididymal sperm in KO mice. TEM images represent ultrastructures of separated sperm head (upper) and tail (lower) in the epididymis of KO mice. Images in the boxes are enlarged at right. BP, basal plates; Cp, capitulum; SC, segmented column. Scale bar = 500 nm.TEM analysis of morphologically abnormal KO sperm. Detached heads abnormally located to the midpiece of sperm flagella were observed by TEM (left) and confocal differential interference contrast (DIC) microscopy (right). PM, plasma membrane. Scale bars = 500 nm (left) and 5 μm (right).
Figure 7PKA activities in testicular sperm from WT (+/+) and KO (-/-) mice. Graph shows average PKA activity in testicular sperm from KO mice (black bar) relative to that from WT mice (white bar), expressed as a percentage.Representative ProQ Diamond-stained 2D gel images of isolated proteins from testes in WT (left) and KO (right) mice. Testes lysates were separated by 2DE, and phosphoproteins were stained with ProQ diamond. Images in the boxes are enlarged in insets shown below. Circles with numbers indicate spots with significantly changed volume relative to those on WT gels.Comparative phosphorylation intensities of selected spots in 2D gels. The intensities of selected spots in KO gels were compared with intensities in WT gels. Average intensities of the indicated spot numbers (#) in WT (white bar) and KO (black bar): #1205, 1092.2 (WT) and 244.98 (KO); #1207, 729.9 (WT) and 140.43 (KO); #3303, 1165.5 (WT) and 279.5 (KO); #4302, 2725.8 (WT) and 1 (KO); #4405, 984.5 (WT) and 1 (KO). An intensity value of 1 indicates no spot, but is provided for calculation of fold change.Immunoblot analyses of five candidate proteins in testis (E) and sperm (F) of WT and KO mice. Anti-GAPDH, anti-ADAM2, and anti-α-tubulin antibodies were used as controls. Loss of SPATC1L in KO testis was confirmed by immunoblotting with anti-SPATC1L antibody.Localization of SPATC1L (red) and CAPZB (green) in testicular sperm. Overlay with bright field image is shown at right. The white arrow indicates the spatial overlap between SPATC1L and CAPZB. Scale bar = 5 μm.
Figure 8The amount of CAPZB in mature sperm from WT (+/+) and KO (-/-) mice. Graph shows densitometric analysis of CAPZB shown in immunoblot analyses (Figure 7F), expressed relative to WT as a percentage. The density of CAPZB in immunoblot analysis was calculated in relation to density of α-Tubulin.The amount of CAPZB in mock and Spatc1lΔC-transfected cells. Anti-GAPDH antibody was used as control. Overexpression of SPATC1L in TM4 cells was confirmed by immunoblotting with anti-SPATC1L antibody. Graph shows densitometric analysis of CAPZB in pcDNA3.1 vector-transfected control cells (mock; white bar) and SPATC1LΔC-transfected cells (black bar), expressed relative to control cells (mock) as a percentage. The density of CAPZB in immunoblot analysis was calculated in relation to density of GAPDH.Phosphorylation of CPAZB3 by cAMP-dependent protein kinase (PKA). CAPZB3 was incubated with PKA and 32P, and estimated by autoradiography. The amount of CAPZB3 protein was quantified by Coomassie Brilliant Blue (CBB) staining (lower).Phosphorylation of CPAZB3 in the presence or absence of SPATC1L. Phosphorylation of purified CAPZB3 was labeled with 32P via PKA in the presence or absence of SPATC1L, and estimated by autoradiography. The amount of CAPZB3 protein was quantified by Coomassie Brilliant Blue (CBB) staining (lower). Graph shows densitometric analysis of phopho-CAPZB3 (p-CAPZB3) in reactions without (control; white bar) or with SPATC1L (black bar), expressed relative to control as a percentage.Observation of filamentous actin (F-actin) in the presence (lower) or absence (upper) of SPATC1L. F-actin in pEGFP vector-transfected control cells (mock; upper, green) and cells overexpressing SPATC1LΔC (lower, green) was visualized by staining using Phalloidin (red). White bar shows the length of transfected cell. Scale bar = 50 μm.The length of cell overexpressing SPATC1LΔC compared with control. Graph shows the average of measured cell length in pEGFP vector-transfected control cells (mock; white bar) and Spatc1lΔC-transfected cells (black bar), expressed relative to control cells (mock) as a percentage.