EMBO/sd-character-level-ner huggingface dataset:
Autophagosomes have decreased localization with lysosomal markers in IBMPFD mutant–expressing cells.Figure 5.(A) Epifluorescent images for GFP-LC3 (LC3) and LTR of VCP-WT-, VCP-RH-, VCP-AE-, or VCP-EQ-expressing cells transfected with GFP-LC3 and treated with rapamycin for 2 h to induce autolysosome formation. Open arrows highlight autolysosomes (GFP and LTR colocalized), and closed arrows show autophagosomes (GFP only). (B) Pearson's coefficient of GFP and LTR colocalization from 10 independent fields of cells in two different experiments. (C) Epifluorescent images for GFP-LC3 and endogenous Lamp1 immunohistochemistry of U20S, VCP-WT-, VCP-RH-, VCP-AE-, or VCP-EQ-expressing cells or U20S cells cotreated with Baf transfected with GFP-LC3 and treated with rapamycin for 2 h to induce autolysosome formation. Arrows highlight autolysosomes (GFP and Lamp1 colocalized). (A and C) The boxed regions in the merge field are enlarged in the adjacent panels. (D) Pearson's coefficient of GFP and Lamp1 colocalization from 10 independent fields of cells in two different experiments. (B and D) Error bars represent the standard error from 20 fields in two independent experiments. *, P < 0.001. (E) Electron microscopy of tetracycline-inducible control or VCP-WT-, VCP-RH-, or VCP-AE-expressing U20S cells induced for 16 h and then treated with rapamycin for 2 h. Note the accumulation of autophagic structures in the mutant-expressing cell lines. Arrows denote autophagic structures.
a–f) HepG2 cells were treated with bovine serum albumin (Con), 500 μM PA or 100 nM rapamycin (Rap) for 9 h and subjected to following analyses.f1(a-f) HepG2 cells were treated with bovine serum albumin (Con), 500 μM PA or 100 nM rapamycin (Rap) for 9 h and subjected to following analyses. (a,c-f) Cells were stained with ubiquitin (Ub), p62, LC3 and LAMP1 antibodies and DAPI (blue). Boxed areas are magnified in right-most panels (c,d). Co-localization between LAMP1 and LC3 staining (e) was quantified (f; n=3). (b) Cells were subjected to serial protein extraction (solubility fractionation) with indicated concentration of Triton X-100 (TX100) or sodium dodecyl sulphate (SDS) and analysed by immunoblotting with indicated antibodies. (a-f) HepG2 cells were treated with bovine serum albumin (Con), 500 μM PA or 100 nM rapamycin (Rap) for 9 h and subjected to following analyses. (a,c-f) Cells were stained with ubiquitin (Ub), p62, LC3 and LAMP1 antibodies and DAPI (blue). Boxed areas are magnified in right-most panels (c,d). Co-localization between LAMP1 and LC3 staining (e) was quantified (f; n=3). (a-f) HepG2 cells were treated with bovine serum albumin (Con), 500 μM PA or 100 nM rapamycin (Rap) for 9 h and subjected to following analyses. (a,c-f) Cells were stained with ubiquitin (Ub), p62, LC3 and LAMP1 antibodies and DAPI (blue). Boxed areas are magnified in right-most panels (c,d). Co-localization between LAMP1 and LC3 staining (e) was quantified (f; n=3). (g,h) HepG2 cells stably transduced with mCherry (mCh)-GFP-LC3-expressing retroviruses were treated with Con, Rap or PA for 9 h and examined under a live confocal microscope (g). Yellow dots represent autophagosomes while red dots indicate autolysosomes in which GFP signal was faded out. Number of autolysosomes was quantified (h; n=7). Scale bar, 5 μm. All data are shown as mean±s.e.m. ***P0.001 (Student's t-test). Molecular weight markers are indicated in kDa.
PKA inhibition does not affect the autophagic response induced by Hla.Figure 2(A) GFP-LC3 CHO cells were preincubated for 30 min with 10 µM H89, a PKA inhibitor, in the presence (panels a, b, and c) or absence (panels d, e, and f) of 1 mM dbcAMP. Subsequently, they were incubated for 2 h in starvation medium (Stv, panels b and e) or treated for 4 h with 10 µg/ml of α-hemolysin (Hla, panels c and f) in full nutrient media. Cells without any treatment were used as control (Ctr, panels a and d). Cells were finally analyzed by confocal microscopy. Images are representative of three independent experiments. (B) Quantification of the percentage of cells presenting LC3 puncta (i.e., stimulated cells) upon incubation with the different conditions. ** p<0.01 (paired Student's t-test, n = 100 cells/condition). These data are representative of two independent experiments. (C) GFP-LC3 CHO cells were preincubated for 30 min in the presence or absence of 10 µM H89, and then they were incubated for 2 h with 1 mM dbcAMP to verify the activity of H89. Afterwards, cells were lysed with sample buffer and the samples were subjected to Western blot analysis using a rabbit anti-phosphoCREB and the corresponding HRP-labeled secondary antibody, and subsequently developed with an enhanced chemiluminescence detection kit. The band intensities were quantified with the Adobe Photoshop program (lower panel). These data are representative of two independent experiments.
Figure 5All Probe Selection Regions (PSRs) and Junctions are represented in the structural view with boxes that have the same size. An Inclusion junction detects two neighboring PSRs. The PSRs detected by an inclusion junction are linked and graphically represented as dotted lines. An Exclusion junction detects PSRs that are apart from each other. The PSRs detected by an exclusion junction are linked and graphically represented as dotted lines. Altered ASE for each corresponding gene has been highlighted as light blue representing the altered PSR. Red color indicates the inclusion of an exon, whereas green color represents the skipping of an exon. The blue column indicates the alternative splicing event at the listed location.
Figure 1A Detection of the RBPJ/L3MBTL3 interaction using the yeast two-hybrid (Y2H) assay. In this Y2H experiment, RBPJ is fused to the GAL4 DNA-binding (DB) domain and L3MBTL3 is fused to the GAL4 activation domain (AD). The DB-RBPJ and AD-L3MBTL3 fusion proteins interact with each other, leading to the activation of the ADE2 and HIS3 reporter genes and allowing yeast cells to grow on selective media lacking adenine or histidine. The six Y2H controls were previously described (Dreze et al, 2010). The experiment was independently replicated thrice. B Endogenous L3MBTL3 co-purifies specifically with HA-RBPJ but not with HA-EGFP, HA-TBL1X or HA-HEY2. Immuno-precipitation (IP) of HA-tagged RBPJ, EGFP, TBL1X or HEY2 in U87-MG cells followed by Western blot analyses using HA or L3MBTL3 antibody. The experiment was independently replicated twice.  C Endogenous RBPJ co-purifies specifically with HA-L3MBTL3 but not with HA-EGFP, HA-TBL1X or HA-HEY2. IPs of HA-tagged L3MBTL3, EGFP, TBL1X or HEY2 in U87-MG cells followed by Western blot analyses using HA or RBPJ antibody. The experiment was independently replicated twice. EV: Empty Vector control; WB: Western blot; IP: immuno-precipitation.
co-operates with USP7 to deubiquitinate FOXP3 and stabilize its expression.Figure 4A. Reciprocal Co-IP of USP44 and USP7. HEK293T cells were transfected with constructs encoding MYC-USP44 and FLAG-USP7. These cells were lysed and pertinent factors were immunoprecipitated using either anti-FLAG or anti-MYC. Pulled-down proteins were observed by immunoblot analysis using either anti-MYC or anti-FLAG antibodies. B. Effect of USP44 on USP7 levels. HEK293T cells were transfected with MYC-FOXP3. Cells also received combinations of FLAG-USP7 and varying doses of pLVX-USP44 encoding plasmids. FOXP3 was immunoprecipitated using anti-MYC, and immunoblots were analyzed using anti-FLAG, anti-USP44 or anti-MYC antibodies. C. Effect of USP44 and USP7 coexpression on FOXP3 ubiquitination. HEK293T cells were transfected with plasmids encoding MYC-FOXP3, either FLAG-USP44 or FLAG-USP7 or both, His-ubiquitin. Cells were treated with 20 μM MG132 for 4 hrs before being harvested, lysed, and incubated on Ni-NTA beads to pull down ubiquitinated FOXP3, which was visualized by immunoblotting using antibodies specific for MYC. D. (left panel) iTreg were polarized from human naïve CD4+ T cells over 7 days (n=3 donors /experiment) receiving control (shCK), or shRNA knockdown constructs targeting USP44 (shUSP44-1, -2), or USP7 (shUSP7-1, -2), or both shRNA constructs. Freshly isolated nTregs were treated with either control or shRNA constructs. After transduction with lentivirus for 48 hours, cells were harvested and run SDS-PAGE gels. Protein levels were visualized by immunoblotting using antibodies specific for FOXP3, USP44, USP7 and GAPDH. Shown are representative findings from 3 independent experiments (biological replicates).
Figure 2Overview of the mammalian 40S in complex with IAPV-IRES. Left, cryo-EM final post-processed map of class 1 with 40S colored yellow and IAPV- IRES maroon. Right, corresponding final refined model with IAPV-IRES colored according to figure 1A. Ribbon diagram of the 40S colored by pairwise root-mean-square deviation displacements observed between the two IAPV-IRES/40S classes. The different position of the 40S head between both classes is a composition of swiveling and tilt movements (indicated by arrows in orthogonal views). Close up view of the ribosomal sites of the 40S for IAPV-IRES/40S class 1 showing cryo-EM unsharpened cryo-EM density. Sequence of the PKI three-way helical junction. Unsharpened cryo- EM density for the PKI region of the IAPV-IRES in class 1 with the SL-III and the tRNA/mRNA mimicking domain indicated.
Aggregating peptides are more potently solubilized by acidic than by basic GKs.Figure 3A) Schematic representation of the peptide design used in this study. An aggregating peptide core (or APR, red) is flanked on either side by one of four charged residues (Arg, Lys, Asp or Glu), an Ala on either side, or no flanking residues (noGK). B) Time-resolved Dynamic Light Scattering (DLS) analysis indicating average particle size over time for each of the peptides in the β-Gal peptide set (aggregating core sequence SVIIWSLGN). C) ThT binding kinetics of the β-Gal peptide set. Background-corrected fluorescence over time is shown for 3 independent repeats. D) pFTAA binding kinetics of the β-Gal peptide set. Background-corrected fluorescence over time is shown for 3 independent repeats. E) End-point solubility analysis quantifying the concentration of peptide remaining in the supernatant following ultracentrifugation for the β-Gal peptide set. Bars depict mean concentration, whiskers indicate standard deviation (n=4). Statistical significance was determined through two-way ANOVA with Bonferroni's correction for multiple comparisons. P-values for significant differences are indicated. F) TEM images of the β-Gal peptide set after 3 days incubation. Top panels give an overview image of one square in a TEM grid, lower panel shows enlarged image (magnification 12000X). Scale bars indicate 12 µm (top row) or 1 µm (bottom row). G) Combined results for the aggregation analyses for the entire peptide set. Peptides were classified on whether they show a kinetic in the dye-binding and DLS analyses, and whether they form amyloid fibers detectable in TEM imaging. H) Violin and boxplots showing the distribution of end-point solubilities across 11 aggregating cores, grouped by GK. The dotted line indicates a concentration of µM, corresponding to completely insoluble peptides. I) Solubility analysis of the in vitro solubility screen performed by Niwa et al (Niwa et al, 2009). Left panel shows combined box- and violin plots depicting the solubility distributions of proteins containing at least one strong APR (TANGO score > 70) not protected by any negative GKs (red) versus proteins where all strong APRs are flanked by at least one negative charge (blue). The right panel shows a control analysis, in which proteins were classified by the occurrence of at least one strong APR (TANGO score > 70) not flanked by any positive GKs (red) versus proteins where all strong APRs are flanked by at least one positive charge (blue). The upper boxplot whiskers indicate the largest value no further than 1.5 times the Inter-Quartile Range (IQR) from the upper hinge, the lower whiskers show the smallest value at least 1.5 * IQR from the lower hinge. Notches extend 1.58 * IQR / sqrt(n) from either side of the median and represent a 95% confidence interval for the median value. Statistical significance was determined through Kruskal-Wallis test with a post-hoc Wilcoxon analysis for pairwise testing. P-values are indicated.
LAMP‐2A localizes in detergent‐resistant lipid microdomains of the lysosomal membrane.Figure 1(A) Fed rat liver lysosomes were extracted with 1% of the indicated detergents and then subjected to sucrose gradient centrifugation. Aliquots collected from top to bottom were subjected to SDS-PAGE and immunoblotted for LAMP‐2A and flotillin‐1. Stars indicate the aliquots of the gradient of translucent appearance (highly enriched in lipids). (B) The distribution of LAMP‐2A through the sucrose gradient after extraction with 1% Triton X‐114 was calculated from the densitometric quantification of immunoblots as the one shown here. Values are expressed as percentage of the total lysosomal levels and are mean+s.e. of four experiments.
Recognition of Sen1 NIM by Nrd1 CID.Figure 2(only non-hydrogen atoms are shown) and Nrd1 CID is shown as a grey ribbon model. Nrd1 CID residues that form hydrophobic contacts and putative hydrogen bonds to Sen1 NIM peptide are shown in magenta sticks. B) Electrostatic surface representation of Nrd1 CID (electropositive in blue; electronegative in red; neutral in white) with the Sen1 NIM peptide (represented in yellow sticks; only non-hydrogen atoms are shown). The upstream electronegative stretch of Sen1 NIM interacts with an electropositive pocket of Nrd1 CID, while the C-terminal part of the peptide adopts an extended conformation that docks in a hydrophobic pocket of Nrd1 CID. C) Superposition of Nrd1 CID-Sen1 NIM (yellow) and Nrd1 CID-Trf4 NIM (magenta) complexes, displaying only peptide ribbons on the surface of Nrd1 CID. The comparison highlights the extended and β-turn conformations of Sen1 NIM and Trf4 NIM, respectively. D) Scheme showing contacts (putative H-bonds and hydrophobic contacts) and energetics between the Sen1 NIM peptide and Nrd1 CID. Equilibrium binding experiments with the protein mutants were monitored by FA. L20D mutant disrupts the hydrophobic contact with F17 and impairs the overall geometry of the α1-α2 loop that contributes to the interaction with the upstream electronegative stretch of NIM. KD (wild type Nrd1 CID-Sen1 NIM) equals 1.20 ± 0.02 μM. E) Alignment of RNAPII CTD and CTD mimics (Trf4 NIM, Sen1 NIM, and Mpp6 CTD mimic). Blue and grey boxes highlight the upstream electronegative stretches and hydrophobic regions, respectively. Previous structural works reported that S/NPXX motifs form the β-turn conformation (Kubicek et al., 2012; Tudek et al., 2014).
Figure 5A. Niacin treatment of Vim-/- explants rescues hypermyelination, n=10 DRGs/ coverslips per condition, with quantification, representative of three independent experiments, p=0.0048, nonparametric one-way ANOVA, followed by Dunn's post hoc test. A. Western blot analysis on lysates from treated and not treated explants (at least 10 DRGs/ coverslips per lane) shows that increased Akt activation (S473 phosphorylation) in Vim-/- explants is restored to normal levels following 5 mM Niacin treatment. B. Niaspan treatment of Vim-/- mice does not affect mouse growth, as the growth rate in WT (n=8, saline; n=6 Niaspan) and Vim-/- (n=10 saline and n=10 Niaspan) mice either saline or Niaspan-treated is not significantly different, Linear Mixed Effect (LME) models. B. Niaspan administration (daily i.p. injection of 160mg/Kg Niaspan starting at P15 for 15 days) enhances Tace activity in Vim-/- nerves at P30, n=6 animals per genotype, p=0.0325, one-tailed Mann Whitney U test. C. Semithin section and g-ratio analyses of sciatic nerves at P30 shows that Niaspan does not alter myelin thickness in WT nerves, whereas restores myelin thickness to normal values in Vim-/- nerves. G-ratio values: WT saline, 0.71 ± 0.003, 1872 fibers, n= 5 animals; WT Niaspan, 0.71 ± 0.004, 1882 fibers, n= 5 animals; Vim-/- saline 0.69 ± 0.004, 2313 fibers, n= 6 animals; Vim-/- Niaspan 0.72 ± 0.01, 1616 fibers, n=5 animals. WT saline as compared to Vim-/- saline, p=0.0588; Vim-/- saline as compared to Vim-/- Niaspan, p=0.0431, repeated measures ANOVA, representative of two independent experiments. The number of myelinated fibers is similar between the 4 groups as shown, p=0.3042, nonparametric one-way ANOVA, followed by Dunn's post hoc test.
HOXA4 regulates the phenotypic switching of vascular smooth muscle cells.Figure 5Expression of Hoxa4 in various mouse tissues using qRT-PCR. Expression of glyceraldehyde-3-phosphate dehydrogenase (Gapdh) mRNA was used as an internal control. WAT; white adipose tissue, BAT; brown adipose tissue, Skm; skeletal muscle. Quantitative real-time PCR analysis of differentiated VSMC marker genes in primary human VSMCs with PDGF-BB stimulation for 24 hours. *P<0.05, **P<0.01, by unpaired two-tailed Student's t-test. Quantitative real-time PCR analysis of smooth muscle specific genes in primary human VSMCs transduced with lentiviral vectors encoding overexpression or knockdown of HOXA4 and YAP. Cells infected with lentiviral vectors encoding LacZ or shCtrl were used as controls. *P<0.05, **P<0.01, by unpaired two-tailed Student's t-test. Representative western blotting analysis of total protein lysates of primary human VSMCs transduced with lentiviral vectors encoding knockdown of YAP/TAZ Representative western blotting analysis of total protein lysates of primary human VSMCs transduced with lentiviral vectors encoding knockdown of HOXA4. Representative western blotting analysis of total protein lysates of primary human VSMCs transduced with lentiviral vectors encoding knockdown of HOXA4 Representative western blotting analysis of total protein lysates of primary human VSMCs transduced with lentiviral vectors encoding knockdown of HOXA4. Quantitative real-time PCR analysis of YAP/TEAD target genes in primary human VSMCs transduced with lentiviral vectors encoding overexpression or knockdown of HOXA4 and YAP. The cells infected with lentiviral vectors encoding LacZ or shCtrl were used as controls. *P<0.05, **P<0.01, by unpaired two-tailed Student's t-test. Proliferation assay in VSMCs transduced with the indicated genes. Virus-transfected human VSMCs were plated at equal density in growth medium, and then cells were collected and counted at each time point as indicated. **P<0.01 vs LacZ, by ANOVA with Sidak's correction. BrdU incorporation assays in VSMCs transduced with the indicated genes. The percentage of BrdU positive cells in each group is shown. Nine to twelve images were randomly acquired and analyzed. **P<0.01 vs LacZ, by ANOVA with Sidak's correction. Proliferation assay in VSMCs transduced with the indicated genes. Virus-transfected human VSMCs were plated at equal density in growth medium, and then cells were collected and counted at each time point as indicated. *P<0.05 vs shCtrl, by ANOVA with Sidak's correction. BrdU incorporation assays in VSMCs transduced with the indicated genes. The percentage of BrdU positive cells in each group is shown. Nine to twelve images were randomly acquired and analyzed. **P<0.01 vs shCtrl, by ANOVA with Sidak's correction.
YAP promotes cell proliferation in cancer cells harbouring mutant p53.Figure 5A and B. Proliferation curves of SKBr3 cell line knocked-down for YAP (A) or p53 (B). si-GFP oligos are used as negative control.Cell viability analysis in A and B was determined by trypan blue dye exclusion staining, in C was determined by ATPlite luminescence analysis. All the values are means + s.d. of six replicates from three independent experiments. C. Viability of CAL27 cell line transfected with si-GFP or si-p53 oligos and empty vector or GFP-YAP construct, as indicated in the legend to the graph.Cell viability analysis in A and B was determined by trypan blue dye exclusion staining, in C was determined by ATPlite luminescence analysis. All the values are means + s.d. of six replicates from three independent experiments.
Fig.Figure 3(A) Detection and quantification of the cleavage of endogenous MgtE by YqgP in living B. subtilis cells (BS72, Table EV2) depending on the concentrations of magnesium and manganese ions. Cells were cultivated in glucose M9 minimal medium with limiting (0.01 mM) or high (1 mM) concentration of MgSO4, in the presence or absence of 100 μM MnCl2, and analysed by western blotting with near-infrared detection (upper panel). Black arrow denotes full-length MgtE, and red arrow denotes its N-terminal cleavage product formed by YqgP. The corresponding fluorescence signals were quantified by densitometry, and are displayed as relative specific activity, which is substrate conversion normalized to enzyme expression level (lower panel). (B) Growth curves of wild-type (BTM843, Table EV2), yqgP deficient (BTM844, Table EV2) and rescue (BTM845, Table EV2) strains of B. subtilis in M9 minimal medium with limiting magnesium (0.01 mM MgSO4), exposed to manganese stress elicited by adding 75 µM MnSO4 in mid-exponential phase (stress-phase denoted by blueish background). All strains further contain a deletion in the putative manganese efflux pump MntP (ΔywlD, Table EV2). Bottom panel shows that manganese is more toxic in the yqgP deficient strain than in the wild type strain, and that reintroduction of YqgP rescues fitness during manganese stress to above-wild-type level. Top panel shows no difference between the strains in the absence of manganese stress. Data are shown as individual datapoints from three independent experiments overlaid with dashed line connecting average values from each time-point, which illustrates the reproducibility of the assay. (C) Top panel: growth curves of wild-type (BTM843), yqgP deficient (BTM844) and rescue (BTM845) strains of B. subtilis in M9 minimal medium with limiting magnesium (0.01 mM MgSO4), exposed to manganese shock elicited by adding 75 µM MnSO4 in mid-exponential phase. Bottom panel: manganese toxicity is prevented by further adding 5 mM magnesium (MgSO4) in otherwise identical conditions. (D) Inhibition of YqgP by a rhomboid-specific peptidyl ketoamide inhibitor (STS736, i.e. compound 9 from Ticha et al., 2017b()) abolishes the YqgP induced fitness of B. subtilis under manganese stress, in a dose-dependent manner, both with endogenous YqgP (top panel) and overexpressed YqgP (bottom panel). Media and growth conditions were identical to those used in panel (B). (E) Overexpression of heterologous MgtE inhibits growth of yqgP deficient strain (BTM610, Table EV2) in rich LB medium supplemented with 75 μM MnSO4. Cell fitness is improved by overexpression of YqgP (BTM611, Table EV2) or its catalytically dead mutant YqgP.S288A (BTM612, Table EV2). For clarity, for panels C - E, representative experiments of 2-3 independent biological replicates are shown.