EMBO/SourceData huggingface dataset:
Figure 9Cellular metabolites were measured by LC-MS-based untargeted metabolomics from extracts of Stage 11 embryos; biological replicates for control n=5, for atosPBG n=7. (B) Normalized ATP/ADP ratio values are decreased in atosPBG compared to control embryos (p=0.028). Data information: Mean±SEM, ns=p>0.05, *p<0.05, **p<0.01, ****p<0.0001. unpaired t-testCellular metabolites were measured by LC-MS-based untargeted metabolomics from extracts of Stage 11 embryos; biological replicates for control n=5, for atosPBG n=7. Heatmap of non-targeted metabolites in atosPBG compared to wild-type embryos shown with average log2fold change (FC) in the non-targeted LC-MS/MS analysis reveals (C) an increase in atosPBG in substrates of the dGR/HPR enzyme, including 4-hydroxy α-ketoglutarate and hydroxyproline (HLP) and a smaller decrease in its products, glycolate and glycerate, (D) a significant increase in some dipeptides including those containing hydroxyproline. Data information: Values in heat maps are obtained from untargeted metabolomic analysis, unpaired t-testCellular metabolites were measured by LC-MS-based untargeted metabolomics from extracts of Stage 11 embryos; biological replicates for control n=5, for atosPBG n=7. (E) Quantification shows an increase in atosPBG in the pyruvate/glucose ratio (p=0.035), but none for the lactate/glucose ratio (p=0.65). Data information: Mean±SEM, ns=p>0.05, *p<0.05, **p<0.01, ****p<0.0001. unpaired t-testCellular metabolites were measured by LC-MS-based untargeted metabolomics from extracts of Stage 11 embryos; biological replicates for control n=5, for atosPBG n=7. Heatmap of non-targeted metabolites in atosPBG compared to wild-type embryos shown with average log2fold change (FC) in the non-targeted LC-MS/MS analysis (F) We observe increases in atosPBG in intermediates of mitochondrial fatty acid β-oxidation (FAO), including different carnitine-conjugated lipids, and (F-G) a significant increase in ketone body substituents compared to the control. Data information: Values in heat maps are obtained from untargeted metabolomic analysis, unpaired t-test
Figure 1C. Kaplan-Meier Survival plot showing low survival of chd7 mutants after 12 dpf (N=5).E. Acetylated tubulin staining in 28 hpf controls (left) and mutants (right) showing severely affected outbranching of the trigeminal nerve (Vth cranial nerve). Notably, chd7-/- display reduced branching of the Vth cranial nerve (arrows) and axonal arborisation in the tectal area. Graphs showing quantitative analyses of percentage (n=5) and mean total length of peripheral projections (n=6) per zebrafish in controls and mutants (***p<0.001; **p<0.005, Student's t-test).
Figure 2C-H Total number of GABAergic neurons (GFP+ cells) in (C, D) the optic tectum (OT) and cerebellum (CB) regions of 5 dpf wild-type and chd7 mutant fish (n=16; ****p<0.0001; Student's unpaired t-test), (E, F) the hypothalamus (hyp) region (n=10; *p=0.0182; Student's t-test) and (G, H) the telencephalon (tel) (n=7; *p=0.0347; Student's t-test).
Figure 3F-G. Treatment with the ERK signalling inhibitor U0126 ameliorated the number of GABAergic neuron (n=10-15; **p<0.05; ****p<0.0001, one-way ANOVA).
Figure 4A. qPCR analysis of PAQR3 expression in a CHD7-mutation positive patient compared to parental controls set (N=4; ****p<0.0001; Student's t-test). Fold change was calculated according to the 2(−ΔΔCt) method, using HPRT1 and RPS1 as housekeeping genes for normalization. All data were expressed as mean fold change ± SD across replicates, relative to control parents set to 1 (dotted line), N is the number of experimental repeats.C. ChIP-qPCR assays in LCLs showing decreased occupation of CHD7 on the PAQR3 proximal promoter in a CHD7-mutation positive patient (N=3) compared to parental controls (N=6); *p< 0.05; Student's t-test, All data were expressed as mean fold change ± SD, N is the number of experimental repeats.
Figure 5A-B. GABAergic neuron defects in wild-type fish treated with ER/Golgi traffic inhibitor BFA (n=9; ****p<0.0001; ns, not significant; One-way ANOVA).C-D. Overexpression of paqr3b mRNA improve the number of GABAergic neurons in 3dpf chd7 mutant fish (n=7 for chd7-/- and n=11 for chd7-/- + paqr3b mRNA; ****p<0.0001; **p<0.05; One-way ANOVA). Of note, the rescue experiment was performed at 3 dpf given the transient nature of mRNA.
Figure 6B. Lifespan analyses of chd-7(gk290) mutants (n=339; red) compared to WT (n=444; black). Log-rank test was performed for statistical analyses. ***p < 0.001.D-F. Example pictures of the GABAergic nervous system cell bodies, commissures, axonal gaps and axonal breaks larger than 50 µm per worm in chd-7(gk290) mutants expressing unc-47p::mCherry.O. Representative images of GABAergic neurons and total number of GABAergic neurons (GFP+ cells) in the optic tectum (OT) and cerebellum (CB) regions of wild-type, chd7 mutant and ephedrine-treated fish (n=9; ****p<0.0001; One-way ANOVA). Treatment with ephedrine ameliorated the number of GABAergic neurons.
Figure 1ChEP analysis using EGFP (control)- or Piwi-KD OSCs. Signals with an adjusted p-value (Bonferroni test) of less than 0.05 are highlighted in red. The signals for Lam, LamC, and H1 are labelled within the plots.Lam- or LamC-KD followed by qRT-PCR of RNA levels for piRNA target (mdg1 and gypsy) or non-target (roo) TEs. Error bars indicate SD (n=3). * = p-value<0.05 (t-test). Note that the complete depletion of Lam and LamC is impossible since their KD causes severe damage to cells.
Figure 2Boxplots showing fold changes in the expression of piRNA target or non-target TEs based on RNA-seq upon Piwi-KD (left), and the frequency of piRNAs, which target piRNA target TEs or non-piRNA target TEs (right). Definition of piRNA target and non-target TEs is in Fig EV1E. Boxplot whiskers, box, and central band show maximum, third quartile, median, first quartile, and minimum, respectively (n=10 for piRNA target TEs, n= 80 for non-piRNA target TEs). P-values were calculated using the Wilcoxon rank-sum test.Boxplot showing DamID-seq signals of piRNA target or non-target TEs upon EGFP (control)- or Piwi-KD. Boxplot whiskers, box, and central band show maximum, third quartile, median, first quartile, and minimum, respectively (n=10 for piRNA target TEs, n= 80 for non-piRNA target TEs). P-values were calculated using the Wilcoxon rank-sum test.Oligo-FISH images for the representative piRNA target region described in Fig 4A, upon EGFP (control)- or Piwi-KD. Gray indicates DAPI staining for DNA, magenta indicates FISH signal, and green indicates Lamin immunofluorescence staining. Scale bar, 5μm. Ratio of distance from FISH signal to the nuclear periphery (DAPI surface) is quantified at right, dot in the box plot indicates mean value; Boxplot whiskers, box, and central band show minimum, first quartile, median, third quartile, and maximum, respectively. P-values calculated with Mann-Whitney U test.
Figure 3Oligo-FISH images for changes in the intra-TAD interaction at the TAD described in (C), upon EGFP (control)- or Piwi-KD. Gray indicates DAPI staining for DNA, green and magenta indicates FISH signal at the different positions of TADs (TAD-1 and TAD-2). Details of TAD probe design is described in Fig EV2C. Scale bar, 5μm. Distance between two FISH signals is quantified at right, dot in the box plot indicates mean value; Boxplot whiskers, box, and central band show minimum, first quartile, median, third quartile, and maximum, respectively. P-values calculated with Mann-Whitney U test.
Figure 4Boxplots showing fold changes in the histone mark association of piRNA target or non-target TEs based on ChIP-seq upon Piwi-KD (Definition of piRNA target and non-target TEs are described in Fig EV1E). Boxplot whiskers, box, and central band show maximum, third quartile, median, first quartile, and minimum, respectively (n=10 for piRNA target TEs, n= 80 for non-piRNA target TEs). P-values were calculated by Wilcoxon rank-sum test.ChIP‐qPCR analysis of H3K27Ac and H3K4me3 occupancy on the reporter gene upon transfection of λN-Nxf2 expression vector or control EGFP expression vector. Bar graph shows the occupancy relative to that of the sample transfected with a control plasmid. Error bars indicate SD (n = 3), * = p-value<0.01 (t-test)..
Figure 5Immunoprecipitation (IP) from OSC lysate using anti-Lam, or myc antibody, followed by WB using indicated antibodies. Mouse immunoglobulin G (n.i.) was used for control IP. Note that OSCs used at the right panel is a line which stably expresses myc-Nxf2.Density plots for DamID-seq signals over consensus sequences from piRNA target (gypsy and mdg1, orange) and non-target TEs (roo, blue) in EGFP (control)- or Nxf2-KD cells.Oligo-FISH images for the reporter of the tethering system, at 0h (control), 48h hours, 96 hours after transfection of λN-Nxf2 expression vector. Gray indicates DAPI staining for DNA, magenta indicates FISH signal, and green indicates Lamin staining. Scale bar, 5μm. The ratio of distance from FISH signal to the nuclear periphery (DAPI surface) is quantified at right, dot in the box plot indicates mean value; Boxplot whiskers, box, and central band show minimum, first quartile, median, third quartile, and maximum, respectively. P-values calculated with Mann-Whitney U test.
Figure 6Dot plot showing the correlation between the normalized density of indicated TEs per TAD (x-axis) and changes in intra-TAD interactions upon H1(left)-, Egg(middle)-, or HP1a(right)-KD (y-axis). Trend lines are in red. Spearman's rank correlation rho is indicated along with the p-value (algorithm AS 89). n.s.; not significant (p > 0.05) Dot plot showing the correlation between the normalized density of indicated TEs per TAD (x-axis) and changes in inter-TAD interactions upon H1(left)-, Egg(middle)-, or HP1a(right)-KD (y-axis). Trend lines are in red. Spearman's rank correlation rho is indicated along with the p-value (algorithm AS 89). n.s.; not significant (p > 0.05)
Figure 1Representative 3D microglia reconstructions showing morphological changes upon LPS injection within the first 48 hours. Scale bar: 10µm Morphological parameters quantification within 48 hours after LPS injectionRepresentative 3D microglia reconstructions from 5 and 15 months old mice showing microglia changes 2 and 10 days post LPS injection. Scale bar: 20µmMorphological parameters quantification for 5 and 15 months old mice after LPS injection
Figure 2Two-photon representative images of wild-type and Nlrp3-/- mice (5 and 15 months old). Scale bar: 20µm. Quantification of morphological parameters for wild-type and Nlpr3-/- mice after LPS injection
Figure 3Representative cortical images of MXO4 staining for APP and APP/Nlrp3-/- 15 months old mice. Scale bar: 50µm.Cortical amyloid plaque number and size quantification, and Amyloid-beta1-40 and 1-42 ELISA quantification for APP and APP/Nlrp3-/- mice (5 and 15 month old)
Figure 4Two-photon images of microglia (e-GFP) cells clustering around amyloid plaque for APP and APP/Nlrp3-/- (5 and 15 months old). Scale bar: 20µm b) Quantification of morphological parameters in (a) (mean of 5-6±SEM).Flow cytometry plots from APP and APP/Nlrp3-/- mice (15 months old), cells were gated on CD11b and MXO4 after microglia isolation. d) Relative Aβ microglia uptake quantification
Figure 1(A) Summary of HMCES recovery upon TAP-MS analyses performed with 293T cells stably expressing SFB-PCNA. Cells were treated with CPT: camptothecin (1 μg/ml for 6 h); HU: hydroxyurea (2 mM for 16 h), UV: ultraviolet light irradiation (10 mJ/cm2 harvested after 6 h post-irradiation) or Thymidine (100 mM for 6 h). Recovered peptide-spectrum matches (PSMs) for PCNA and HMCES are indicated for each condition.(C) Immunoprecipitation (IP) of SFB-tagged full-length (FL) HMCES and indicated HMCES deletion mutants was conducted to decipher the region responsible for PCNA interaction.(D) GST-PCNA pulldown assay was used to evaluate the interaction between PCNA and full-length HMCES or indicated HMCES deletion mutants.(E) aniPOND-Western blotting analysis revealed the presence of HMCES on replication fork. Cells were pulsed with EdU for 10 mins, and click-reaction was performed. In thymidine chase samples, cells were incubated with thymidine for another 30 mins prior to click-reaction.(F) Analysis of HMCES level throughout the cell cycle. Cells were synchronized by double thymidine block and released for the indicated time points. CYCLIN E and CYCLIN B1 were used as markers for cell cycle phases.
Figure 2(A) Western blotting analysis confirmed HMCES knockout in 293A cells (293A HMCES KO). Blots also included knockout cells reconstituted with WT SFB- HMCES.(B, C) Colony-forming capacity of HMCES KO cells was compared to that of control wild-type 293A cells. (C) Box plot showing colony forming efficiencies of 293A wild-type control and HMCES KO cells. Box limits represent 25th and 75th percentile, centerline shows the median and whiskers extend minimum to maximum. Data include more than three independent repeats performed in duplicates. Student's t-test were performed for statistical analysis (****, p<0.0001). (D) Colonogenic survival assay of 293A wild-type control and HMCES KO cells treated with various concentrations of hydroxyurea (HU) was shown. Seeding density with respect to control was indicated below each image. The images shown are representative of three biological repeats, each performed in duplicate.(E) Quantification showing survival fraction of wild-type control (WT) and HMCES KO cells upon HU treatment. Data are presented as mean±s.e.m (n=3, each performed in duplicates) and student's t-test were performed for statistical analysis (ns, not significant; *, p<0.05).(F) Quantification of colonogenic survival assay upon exposure of WT and HMCES KO cells to ionizing radiation (IR). Data are presented as mean±s.e.m. Quantifications are from three biological repeats performed in duplicates. Student's t-test was performed for statistical analysis (*, p<0.05; **, p<0.01).(G, H) Sensitivity assay and quantification of surviving WT control and HMCES KO cells determined by colony-forming assay upon exposure to H2O2. Experiments were repeated three independent times, each time performed in duplicates and data are presented as mean±s.e.m. Statistical significance for the corresponding experiment was analyzed by student's t-test (*, p<0.05).(I) Bar graph showing sensitivity of WT, HMCES KO and stably reconstituted WT cells towards H2O2 treatment. Experiment was repeated two independent times with technical repeats.
Figure 3(A, B) Colonogenic assays were performed by adding increasing concentrations of pemetrexed to control wild-type (WT) 293A cells and HMCES knockout (HMCES KO) cells (A) and quantification of results were shown (B). Increasing numbers of cells were seeded with increasing concentrations of the compound to obtain optimal drug-dose response curve. Seeding density with respect to control is indicated below each image. The images shown are representative of three biological repeats, each performed in duplicate. (B) Data are presented as mean±s.e.m. and student's t-test was performed for statistical analysis (****, p<0.0001).(C) Western blot showing APEX2 levels upon 293A cells infected with viruses encoding scrambled or two independent APEX2 shRNAs.(D) Colony forming assay was performed to indicate colony forming efficiency in 293A and HMCES KO cells upon infection with viruses encoding scrambled or APEX2 shRNAs.(E) Sensitivity assay was conducted with WT and HMCES KO cells upon treatment with AP Endonuclease inhibitor III (APEi). Results are presented from two independent experiments and data are presented as mean±s.e.m.(F) Colony forming assay was performed with WT and HMCES KO cells upon either pemetrexed treatment alone or in combination with APEi. Data are presented as mean±s.e.m (n=2 each with technical repeats).(G, H) Western blotting revealed levels of POLH (G) and REV1 (H) in two independent clones upon selection following transfection with indicated shRNA.(I) Colony formation assay was conducted to reveal proliferation of WT, POLH KD, REV1 KD, HMCES KO, HMCES KO + POLH KD and HMCES KO +REV1 KD cells.(J) Representative images showing proliferation of respective shRNA resistant reconstitution of POLH in 293A and HMCES KO cells stably expressing POLH shRNA. Experiment was repeated two independent times in duplicates.(K) Mutagenesis frequency analysis was conducted in 293T scrambled and 293T HMCES shRNA cells using sup F shuttle vector-based assay system. Experiments were repeated three independent times and data are presented as mean±s.e.m. Student's t-test was used to calculate statistical significance (**, p<0.01).
Figure 4(B) Volcano plot showing DDR CRISPR-CAS9 screen for HMCES KO cells. -log10(p-value) is plotted against log2(HMCES KO/ WT) fold change. Genes showing significant positive and negative enrichment are colored in red and top enriched candidates are also labeled.(C) Plot showing number of sgRNAs that are negatively or positively enriched for each gene in DDR library.Western blots showing levels of CtIP (D) upon shRNA mediated knockdown in 293A cells.Western blots showing levels of BRCA2 (E) upon shRNA mediated knockdown in 293A cells.Cell proliferation measured using CellTiter-Glo assay in 293A and HMCES KO cells without or with transfection with viruses encoding CtIP (F) shRNAs. Each experiment was repeated three independent times done in triplicates each time. Data was represented as mean±s.e.m. Student's t-test was used to calculate statistical significance (***, p<0.001; ****, p<0.0001).Cell proliferation measured using CellTiter-Glo assay in 293A and HMCES KO cells without or with transfection with viruses encoding BRCA2 (G) shRNAs. Each experiment was repeated three independent times done in triplicates each time. Data was represented as mean±s.e.m. Student's t-test was used to calculate statistical significance (***, p<0.001; ****, p<0.0001).
Figure 1T cells were collected from age- and gender-matched WT, EGR1KO and EGR4KO mice. (A) CD4+ T cells were isolated from the spleen by negative selection before incubating with anti-CD3/CD28 antibodies for the indicated time periods. Levels of expression of EGR1, EGR2, EGR3 and EGR4 were measured by qPCR.T cells were collected from age- and gender-matched WT, EGR1KO and EGR4KO mice. (B) WBC were collected from WT, EGR1KO and EGR4KO mice before staining and FACS analysis to determine composition (gating strategies in Appendix Fig S1). Subclasses of CD8+, CD4+ and Treg populations were determined as shown.
Figure 2WT and EGR4-/- CD4+ and CD8+ T cells were isolated from the spleen by cell sorting and stained with CFSE. A Cells were incubated under unstimulated conditions or stimulated with either anti-TCRβ or anti-CD3/CD28 antibodies for 0 to 5 days (mean±SEM; a minimum of 3 biological replicates were examined; each biological replicate includes 2 technical replicates).WT and EGR4-/- CD4+ and CD8+ T cells were isolated from the spleen by cell sorting and stained with CFSE. B Dose dependence of EGR4-dependent differences in proliferation were also determined in both CD4+ and CD8+ cells aft er treatment with anti-TCRβ (E,F) or anti-CD3/CD28 (G,H) at the indicated concentrations before FACS analysis (Appendix Fig S2) (mean±SEM; a minimum of 3 biological replicates were examined; each biological replicate includes 2 technical replicates).WT and EGR4-/- CD4+ and CD8+ T cells were isolated from the spleen by cell sorting and stained with CFSE. C,D Generation analysis was then assessed in WT, EGR1-/- and EGR4-/- CD4+ (C) or CD8+ (D) T cells after a 4 day incubation, under unstimulated conditions, or stimulated with either anti-TCRβ or anti-CD3/CD28 antibodies. Generation analysis was determined using FlowJo as depicted in Appendix figure S3 (mean±SEM; a minimum of 3 biological replicates were examined; each biological replicate includes 2 technical replicates).. EGR4 deletion significantly shifted the number of generations as determined by two-way ANOVA; loss of either EGR1 or EGR4 significantly changed the number of generations under resting or stimulated conditions (p < 0.0001).
Figure 3CD4+ and CD8+ T cells were isolated from the spleens of WT, EGR1KO and EGR4KO mice by cell sorting. (A-F) Cytokine secretion was measured by ELISA after incubating CD4+ (A,C,E) and CD8+ (B,D,F) T cells for 48 hrs in resting conditions (A,B) or stimulated with either anti-TCRβ (C,D) or anti-CD3/CD28 antibodies (E,F).CD4+ and CD8+ T cells were isolated from the spleens of WT, EGR4KO mice by cell sorting. (G) Representative FACS plots depicting IFNγ levels after intracellular staining in WT and EGR4KO CD4+ and CD8+ T cells.CD4+ and CD8+ T cells were isolated from the spleens of WT, and EGR4KO mice by cell sorting. (H) Comparison of IFNγ levels in WT vs. EGR4-/- T cells.CD4+ T cells were isolated from the spleens of WT, EGR1KO and EGR4KO mice by cell sorting. (I) Representative FACS plots of CD4+ T cells incubated for 24 hrs under Th1 polarizing conditions before intracellular staining with IFNγ and IL-17 antibodies.CD4+ T cells were isolated from the spleens of WT, EGR1KO and EGR4KO mice by cell sorting. (J) Comparison of the number of Th1 polarized cells between WT, EGR1-/- and EGR4-/- CD4+ T cells.CD4+ T cells were isolated from the spleens of WT, EGR1KO and EGR4KO mice by cell sorting. (K) CD4+ T cells were incubated for 5 days under polarizing conditions before analysis of cytokine production by ELISA.
Figure 4(A) NFAT nuclear localization was measured was measured by immunocytochemistry in CD4+ and CD8+ T cells isolated by negative selection from WT, EGR1KO and EGR4KO mice. Cells were stimulated with anti-CD3/CD28 antibodies for the indicated time periods before fixation and staining. Nuclear localization of NFATc1 in CD4+ and CD8+ T cells was determined based on colocalization of NFATc1 and DAPI measured by Pearson analysis (mean±SEM; data are based upon 13 to 20 cells/data point from one experiment; experiment was repeated 3 times). EGR4-mediated differences in NFATc1 localization were determined by two-way ANOVA. NFAT localization was dependent upon EGR4 expression in both CD4+ (p=0.025) and CD8+ (p=0.039) T cells. Post-hoc analysis revealed EGR4-dependent differences at specific timepoints * p < 0.05; *** p < 0.001.(B) WT, EGR1KO and EGR4KO CD4+ T cells were isolated from the spleen by negative selection before plating on poly-lysine (control) or CD3/CD28 and loading with fura2. Ca2+ levels shown are from representative single cells measured from multiple experiments. (C) Scatter plots showing area under the curve (AUC) and variance for each cell measured under all conditions.
Figure 5CD4+ and CD8+ T cells were isolated by negative selection from WT or EGR4-/-mice. (A) CD4+ and CD8+ T cells were loaded with Fura-2AM and plated on poly-D-lysine (2 hrs) before treating with biotinylated anti-CD3ε, followed by streptavidin where indicated. The average response of the majority of CD4+ (WT 74.2±3.2%; EGR4-/- 77.8±2.9%) and CD8+ (WT 79.4±3.5%; EGR4-/- 78.2±2.5%) cells that responded to streptavidin crosslinking of CD3 (mean±SEM; 40-60 cells/coverslip; 7 to 8 separate experiments).CD4+ and CD8+ T cells were isolated by negative selection from WT or EGR4-/-mice. (B) Cells were plated on anti-CD3/CD28 antibodies for 2 hrs; BTP2 (10 μM) was added where marked by the arrow.CD4+ T cells were isolated by negative selection from WT or EGR4-/-mice. (C) CD4+ T cells were incubated with anti-CD3/CD28 antibodies for 6 hrs before measuring expression of IFNγ, IL-2, IL-17 and IL-4 by FACS analysis. Data are mean±SEM; a minimum of 3 biological replicates were examined; each biological replicate includes 2 technical replicates.