EMBO/SourceData huggingface dataset:
Figure 4(A) ARSA activity quantification upon treatment of MSDi cells with 10 µM tazarotene, 20 µM bexarotene, and 10 µM tazarotene and 20 µM bexarotene in combination with increasing concentrations of the pan-RAR receptor antagonist AGN 193109 (24 h pretreatment) for 72 hours. Data represent mean ±SD of 3-11 independent experiments (biological replicates). Two-way ANOVA followed by Tukey's test for multiple comparisons. Displayed are significance levels for the next significant difference between adjacent concentrations/conditions. # p<0.05, ## p<0.01, ### p<0.001. Difference against 0 µM DMSO control (B) ARSA activity quantification upon treatment of MSDi cells with 10 µM tazarotene, 20 µM bexarotene, and 10 µM tazarotene and 20 µM bexarotene in combination with increasing concentrations of the pan-RXR receptor antagonist HX 531 (24 h pretreatment) for 72 hours. Data represent mean ±SD of 4-14 independent experiments (biological replicates). Two-way ANOVA followed by Tukey's test for multiple comparisons. Displayed are significance levels for the next significant difference between adjacent concentrations/conditions. # p<0.05, ## p<0.01. Difference against 0 µM DMSO control: **** p<0.0001.
Figure 6(A) ARSA protein amount quantification after treatment of MSD primary fibroblasts (variant FGE Gly247Arg homozygous) with tazarotene, bexarotene, and tazarotene/bexarotene in combination for 6 days referred to β- actin amounts and normalization of ARSA activity based on ARSA protein amount (specific ARSA activity). Data represent mean ±SD of 3 independent experiments (biological replicates). One-way ANOVA followed by Tukey's test for multiple comparisons. Displayed are significance levels for the next significant difference between adjacent concentrations. # p<0.05. Difference against 0/0 µM control: * p<0.05, *** p<0.001.(C) Quantification of ARSA activities in CRISPR/Cas9 generated ARPE19 SUMF1 -/- cells and appropriate controls (ARPE19 wild type, MSD primary fibroblasts (variant FGE Gly247Arg homozygous)) after 6 days of simultaneous treatment with tazarotene/bexarotene 10/20 µM for up to 21 days. Data represent mean ±SD of 3 independent experiments (biological replicates). One-way ANOVA followed by Tukey's test for multiple comparisons. Displayed are significance levels for the next significant difference between adjacent concentrations. ## p<0.01. Difference against 0 days control: **** p<0.0001.
Figure 7(A) Pulse-chase-experiment in HT1080 FGE Ser155Pro cells after pre-treatment with tazarotene/bexarotene and DMSO (control) for 3 days. Upper panel: representative autoradiogram of intracellular (C) 35S isotope labelled FGE protein in either condition with a chase time of 4 hours. Lower panel: quantification of 35S isotope labelled intracellular FGE protein amounts. Data represent mean ±SD of 3 independent experiments (biological replicates). One-way ANOVA followed by Tukey's test for multiple comparisons. ** p<0.01, *** p<0.001.
Figure 1B Sedimentation assay to quantify condensation of unmodified TDP-43 versus in vitro phosphorylated TDP-43 (+CK1δ, +ATP) and controls (CK1δ or ATP only); TDP-43 detected by Western blot (rabbit anti-TDP-43 N-term). Due to incomplete TEV cleavage, some TDP-43-MBP-His6 remains present and co-fractionates with cleaved TDP-43, due to TDP-43 self-self interaction. C Quantification of band intensities of cleaved TDP-43 shown as means of Supernatant/(Supernatant+Condensate) [S/(S+C)] ratio of three independent experimental replicates (n=3) ± SD. ***p < 0.0002 by one-way ANOVA with Dunnett´s multiple comparison test to Wt.Representative bright field microscopic images of TDP-43 condensates (in Hepes buffer), Bar, 25 µm (F) and quantification of condensate number (G) Box plots show the comparison of median and inter-quartile range (upper and lower quartiles) of all fields of view (FOV) from Min to Max (whiskers) of two replicates (≥ 22 FOV per condition). *p < 0.0332, **p < 0.0021 and ***p < 0.0002 by one-way ANOVA with Dunnett´s multiple comparison test to Wt, comparing the respective concentration condition (5, 10, 20 µM).
Figure 2B Representative images of FRAP experiments at indicated time-points. Boxes indicate bleached area (half-bleach of condensate). Bar, 5 µm. C FRAP curves after half-bleach of freshly formed Alexa488-labeled TDP-43 condensates. Values represent means ± SD of three independent experimental replicates (n=3) of ≥ 9 droplets analyzed per condition. ***p < 0.0002 by one-way ANOVA with Tukey´s multiple comparison test for area under the curve (AUC) of individual droplets.D Confocal images of Alexa488-labeled TDP-43 aggregates formed in an in vitro aggregation assay (with TEV protease cleavage). Bar, 100 µm. Zoom shows magnified view of aggregates at the 24h time point. Bar, 20 µm.
Figure 4A Hormone-inducible nuclear import assay, representative still images of GCR2-EGFP2-TDP-43 Wt, 12D and 12A before and during import triggered by addition of dexamethasone. Images were live recorded by spinning disc confocal microscopy. Bar, 20 µm. B Quantification of the hormone-inducible nuclear import measured during a total time course of 50 min. Values represent the mean fluorescence intensity of GCR2-EGFP2-TDP-43 in the cytoplasm for three independent replicates ± SEM (≥ 42 cells per condition).C Phosphomimetic 12D TDP-43 is competent in autoregulating TDP-43 expression. SDS-PAGE followed by TDP-43 Western blot showing downregulation of endogenous TDP-43 through autoregulation (60) after 48 h expression of Wt, 12D and 12A variants in HeLa cells. TDP-43 was detected using rabbit anti-TDP-43 C-term antibody (Proteintech), Histone H3 (rabbit anti-Histone H3 antibody, Abcam) was visualized as a loading control. * denotes an unspecific band.E Splicing analysis by RT-PCR of known TDP-43 splice targets (SKAR exon 3 and Bim exon 3) in HeLa cells. Silencing of endogenous TDP-43 by siRNA leads to altered splice isoforms of SKAR and Bim (second vs. first lane). These splicing alterations can be rescued by re-expression of TDP-43 Wt, but also 12D or 12A variants, demonstrating that phosphomimetic TDP-43 is fully competent in regulation splicing of these TDP-43 splice targets.
Figure 5B Reduced SG association of TDP-43 by 12D mutations or in vitro phosphorylation. Bar, 20 µm.F SG recruitment of different TDP-43-NLSmut variants in intact HeLa cells in the absence of endogenous TDP-43. After TDP-43 silencing and expression of NLSmut Wt, 12D and 12A variants, SGs were induced by H2O2 treatment and SG recruitment of TDP-43 was monitored by TDP-43 and G3BP1 immunostaining. For clarity, signals were converted to grey values in the individual channels (upper two rows). In the merge (lower row), nuclei were stained in DAPI (turquoise), TDP-43 (green) and G3BP1 (red). Bar, 40 µm.H Recruitment of TDP-43 into arsenite-induced nuclear bodies (NBs) in HeLa cells. After TDP-43 silencing and expression myc-TDP-43 Wt, 12D and 12A, NBs were induced by sodium arsenite treatment and NB recruitment of TDP-43 was monitored by TDP-43 immunostaining. Bar, 20 µm.J Intensity profiles (right) of TDP-43 Wt, 12D and 12A variants (green) along white lines (left). Bar, 10 µm.
Figure 6A Biochemical fractionation into RIPA-soluble (S) and RIPA-insoluble (I) fractions to analyze solubility of the different myc-TDP-43 variants (Wt, 12D and 12A) expressed in HeLa cells for 48 h. TDP-43 was detected by TDP-43 Western blot (upper blot, rabbit anti-TDP-43 C-term, Proteintech) and Myc Western blot (lower blot, mouse anti-Myc 9E10). B Quantification of myc-TDP-43 variants (Wt, 12D and 12A) in (S) versus (I) fractions extracted from TDP-43 Western blots of 4 independent replicates ± SD, plotted as S/(S+I). *p < 0.0332 by one way ANOVA with Dunnett´s multiple comparison test to Wt.D Primary hippocampal neurons expressing EGFP-TDP-43 Wt, 12D or 12A with additional NLS mutation. Bar, 80 µm. Right: Zoomed images of white squares (TDP-43 signal). Bar, 10 µm.E SG recruitment of EGFP-TDP-43 NLS mutant variants (Wt, 12D, 12A) in primary hippocampal neurons. SG formation was induced by 1h heat shock at 42°C. SGs and TDP-43 were monitored by G3BP1 antibody staining and EGFP fluorescence, respectively. For clarity, signals were converted to grey values in the individual channels (first two columns). In the merge (third column), EGFP-TDP-43 shown in green, G3BP1 in red and nuclei (DAPI staining) in turquoise. Bar, 20 µm.
Figure 1Effects of ActA and BMP4 on the expression of selected pluripotency, PGC, and mesodermal genes during PGC‐precursor induction. DM: dorsomorphin, SB: SB431542. Samples were calibrated with iPSC values, and iPSC values depict 1. Y‐axes are in log2 scale.Gene expression dynamics of selected pluripotency, PGC, and mesodermal genes during prolonged PGC‐precursor induction of up to day 7. Y‐axes are in log2 scale.Immunofluorescence analysis for OCT4 (red), BLIMP1 (green), and T (white) on days 0, 1, and 2. Nuclei were stained with Hoechst (blue). The culture contained BMP4 (5 ng/ml), Activin A (50 ng/ml), and bFGF (20 ng/ml). Scale bar: 100 μm.
Figure 2FACS analysis of the concentration‐dependent effect of BMP4 on TRA‐1‐81+/cKIT+ PGCLCs on day 4. B25: 25 ng/ml BMP4; B50: 50 ng/ml BMP4; B100: 100 ng/ml BMP4.FACS analysis of TRA‐1‐81 and cKIT during PGC induction of up to day 8.Gene expression analysis of selected PGC markers in TRA‐1‐81+/cKIT+ and SSEA1+/cKIT+ FACS fractions of d4 PGCLCs. Samples were calibrated with iPSC values, and iPSC values depict 1.
Figure 3Gene expression dynamics of selected pluripotency and PGC genes in FACS‐sorted, specified cells during PGC induction. The value for iPSCs is set as 1, and values are on log2 scale.Immunofluorescence analysis for OCT4 (green), BLIMP1 (red), and STELLA (yellow) in TRA‐1‐81+/cKIT+ PGCLCs on day 6. Nuclei were stained with Hoechst (blue). Scale bar: 15 μm.Bisulfite sequence analysis of DMRs of the imprinted genes (PEG1, KvDMR1, PEG10, and NESP55) in iPSCs (top) and d6 TRA‐1‐81+/cKIT+ PGCLCs (bottom). White and black circles represent unmethylated and methylated CpG sequences, respectively.Immunofluorescence analysis for 5mC in d6 PGCLCs.Nuclei were stained with Hoechst (blue). Scale bar: 50 μm.Transplantation of human iPSCs and PGCLCs into ovaries of recipient mice. (i) left ovary: control ovary without transplantation; right ovary: teratoma from iPSC‐reconstituted ovary; (ii) PGCLC‐reconstituted ovaries. Note that no teratomas had formed. Bottom panels: Immunohistochemical analysis for NUMA in sections of iPSC‐ and PGCLC‐reconstituted ovaries. (iii) iPSC‐induced teratoma shown in (i); (iv) ovary containing NUMA+ cells shown in (ii). Insert: higher magnification of selected area. Scale bars: (i) and (ii), 0.5 cm; (iii) and (iv), 50 μm.
Figure 4Effects of KSR and WNT3A during PGC‐precursor induction on the expression of selected pluripotency, PGC, and a mesodermal gene of d2 cultures. The value for iPSCs is set as 1, and values are on log2 scale. Data are presented as means ± SD (n = 3).Effects of KSR and WNT3A on the induction of d6 PGCLCs as analyzed by FACS gated for TRA‐1‐81 and cKIT.Gene expression analysis of selected PGC and hematopoietic markers in d6 PGCLCs that were cultured in 0% (control) or 20% KSR (KSR) condition during PGC‐precursor induction. Samples were calibrated with iPSC values, and iPSC values depict 1. Data are presented as means ± SD (n = 3).Immunofluorescence analysis for OCT4 (red), BLIMP1 (green), and T (yellow) in d2 precursors cultured in increasing KSR concentrations. Nuclei were stained with Hoechst (blue). Scale bar: 100 μm.
Figure 5Effect of knockdown of BLIMP1 and PRDM14 on PGCLC induction. Knockdown of BLIMP1 (F) and PRDM14 (G) was done using the lentiviral system with two individual shRNA vectors for each gene. The knockdown efficiencies were assessed by qPCR (left panel, each). The induction of d4 PGCLCs analyzed by FACS, gated for TRA‐1‐81 and cKIT (right panel, each). Data are presented as means ± SD (n = 3).
Figure 1(A) Oxygen consumption ratio, , in the indicated VSMC types.(B) mitochondrial ATP synthesis in the indicated VSMC types.(C) mitochondrial membrane potential (MP), in the indicated VSMC types.
Figure 2(A) Cytosolic ATP synthesis in the indicated VSMC types, measured by incorporation of phosphate-32 (32Pi) into ADP. [32Pi]-ATP was separated from 32Pi using the molybdate method, as explained in the Methods section.(B) Intracellular lactate concentration(C) external acidification in the indicated VSMC types.(D) Calcium accumulation in mitochondria after 24 h of incubation in MEM media containing 10 µCi/mL calcium-45 (45Ca2+) as a radiotracer.(E) Magnesium concentration in isolated mitochondria.
Figure 3(B) Representative time-course of 2 mmol/L phosphate on calcification of LmnaG609G/+ VSMCs (up). Calcification was visualized with Alizarin red. Representative microscopic images (10x; scale bar: 100 µm) showing calcification of treated and untreated LmnaG609G/+ VSMCs (down).(C-F) Measures of calcium in treated living LmnaG609G/+ VSMCs (C), treated fixed LmnaG609G/+ VSMCs (D), untreated living LmnaG609G/+ VSMCs (E), and untreated fixed LmnaG609G/+ VSMCs (F).(G) The calcification inhibitory capacity was calculated as the difference in calcium deposition between living and fixed cells (ΔCa2+).
Figure 4(A) Magnesium intake in 34-week-old untreated and treated LmnaG609G/+ mice (n=16).(B) Plasma magnesium concentration in 34-week-old untreated and treated LmnaG609G/+ mice (n=16).(C) Calcium content of aortas obtained from 34-week-old wild-type mice and untreated and treated LmnaG609G/+ mice (n=20).(D) Body masses of 34-week-old untreated and treated LmnaG609G/+ mice.(E) Kaplan-Meier graph for untreated and treated LmnaG609G/+ mice (n=16).(F) Representative photographs of 40-wk-old wild-type, untreated and treated LmnaG609G/+ mice.
Figure 5(A) ATP concentration in liver homogenates obtained from 34-week-old wild-type, untreated or treated LmnaG609G/+ mice.(B) Mitochondrial calcium measured in liver mitochondria isolated from the indicated experimental mouse groups.(C) Magnesium concentration in isolated mitochondria.(D) Activities of the indicated mitochondrial complexes (I, II, III, IV, and V) in the absence or presence of rotenone (2 µmol/L), 2-thenoyltrifluoroacetone (TTFA; 1 mmol/L), antimycin A (10 µmol/L), potassium cyanide (KCN; 1 mmol/L), or oligomycin (10 µmol/L).
Figure 1A) Infection susceptibility (top) to VSVG and Spike-typed lentiviruses of a panel of lung cancer cell lines with or without (Empty vector) overexpression of ACE2. ACE2 protein levels were determined by Western-blot (bottom).C) Gene-level scores obtained by robust ranking algorithm analysis of the sgRNA relative abundances between cells infected with Spike-typed lentiviruses and uninfected cells. Genes were ordered alphabetically in the x-axis and the top hits (log10(enrichment-score) < -5) were colored and labelled. Note that CTSL and CTSL1 are different gene isoforms.
Figure 2A) Scheme depicting the screen validation strategy (top) and representative density plots (bottom) of flow cytometry data from cells infected with VSVG- or Spike-typed lentivirus. The infected population is labeled with a darker color.B) Susceptibility to infection with Spike-typed and VSVG-typed lentiviruses in Calu1ACE2 CRISPR KO cell lines with loss-of-function of selected screen candidates. NT596 and NT764 are two non-targeting CRISPR controls. ACE2 are Calu1ACE2 cells transduced with a CRISPR vector against ACE2. Bars represent the average and standard error of the mean (SEM) of the percentage of infected cells in each condition (three biological replicates), normalized to the non-targeting control cell line NT596. The t-test p-value between the relative percentage of infection with Spike-typed and VSVG-typed for each cell line is indicated.C) Confocal microscopy images of SPNS1-KO1 and PLAC8-KO1 Calu1ACE2 cells overexpressing CRISPR-resistant SPNS1- or GFP-PLAC8, respectively.D) Rescue experiments in PLAC8 and SPNS1 Calu1ACE2 KO cell lines: bar plot showing the average (three biological replicates) and SEM percentage of infection (normalized to NT596 with GFP overexpression) of Spike-typed and VSVG-typed lentiviruses in PLAC8-KO1 and SPNS1-KO1 cell lines that overexpress CRISPR-resistant PLAC8- or GFP-SPNS1 constructs. The significance above each bar represents the t-test p-value between each condition and the control cell line (NT596 with GFP overexpression)
Figure 3A, B) Susceptibility to infection with SARS-CoV-2 viruses in Calu1ACE2 (A) and H1299ACE2 (B) cell lines with loss-of-function of the indicated genes. Left: representative immunofluorescence images of SARS-CoV-2 nucleocapsid protein (green) and cell nuclei (red) in the indicated cell lines. Scale bar: 20 µm. Right: immunofluorescence quantification of the number of infected cells at 24 h post-infection in the different loss-of-function cell lines infected with SARS-CoV-2. Bars represent the average and SEM of the percentage of infected cells relative to CRISPR non-targeting transduced (NT596) cells in three biological replicates (three different CRISPR KO cell lines infected independently). The significance above each bar represents the one-tail t-test p-value between each condition and CRISPR non-targeting transduced (NT596) cells.C) Western-blot analyses of SPNS1 and PLAC8 protein levels in the different lung cancer cell lines tested in Fig 1 with or without ACE2 overexpression. Note that PLAC8 and SPNS1 immunodetection was performed on the same blots than in Figure 1A, and that ACE2 and Actin panels from Figure 1A were included here to allow comparison.D) Susceptibility to Spike-typed lentiviruses in the indicated ACE2 overexpressing cancer cell lines that were transduced with GFP, GFP-PLAC8 or GFP-SPNS1. Bars represent the average and SEM of the percentage of infected cells in three technical replicates (independent infections of the same cell line) relative to Calu1ACE2-GFP cells. The significance above each bar represents the t-test between GFP-PLAC8 or GFP-SPNS1 and GFP cells for each cell line.E) Susceptibility to infection with SARS-CoV-2 viruses in cell lines that overexpress ACE2 and GFP-SPNS1 or GFP-PLAC8. Bars represent the immunofluorescence quantification of the number of SARS-CoV-2 infected cells at 24 h post-infection. Representative images of SARS-CoV-2 nucleocapsid immunofluorescence (green) and cell nuclei (red) in GFP and GFP-PLAC8 cells are shown right to each plot.
Figure 5A) Binding and endocytosis studies with Alexa Fluor 647-conjugated S-RBD or transferrin in Calu1-ACE2-RFP cells deficient in PLAC8 and SPNS1. Left: scatterplots of flow cytometry data showing the cutoffs used to define ACE2-RFP and Alexa Fluor 647 positive cells. Right: bar plots showing the ratio of cells positive for Alexa Fluor 647 in either ACE2-RFP positive (red) or negative (blue) cells in binding and endocytosis experiments with S-RBD or transferrin. Bars represent the average and SEM of three biological replicates (three different CRISPR KO cell lines). The significance above each bar represents the t-test p-value between each condition and CRISPR non-targeting transduced (NT596) cells.B-E) Endocytosis experiments with S-RBD in PLAC8- or SPNS1-KO Calu1-ACE2-RFP cells with overexpression of GFP-PLAC8 or GFP-SPNS1, respectively. Cells were incubated with S-RBD for 1 h at 37 ºC and fixed with 4% p-formaldehyde after an acid wash to remove non-internalized S-RBD. Representative wide-field fluorescence images (B) and quantification of mean fluorescence intensities of each fluorophore (C) in each cell show that S-RBD signal correlates with ACE2-RFP expression but not with GFP-PLAC8 or GFP-SPNS1. The Pearson correlation coefficient (r) and correlation test p-value (p) is indicated within each scatterplot. Each dot represents a cell measurement from different microphotographs of a single replicate. Scale bar: 20 µm. Representative fluorescence confocal microphotographs (D) and spot colocalization analyses using ComDet plugin (E) demonstrate colocalization of S-RBD endosomes with ACE2-RFP and GFP-PLAC8 or GFP-SPNS1. (D) Red ovals defining the detected S-RBD dots are overlaid in each channel to assess the colocalization with ACE2-RFP, GFP-PLAC8 or GFP-SPNS1. Inlets show a magnification of the region defined by the white squares. Scale bar: 20 µm. (E) Boxplots representing the percentage of internalized S-RBD that colocalize with ACE2-RFP, GFP-PLAC8, GFP-SPNS1 or their combination (ACE2-RFP and GFP-PLAC8 or ACE2-RFP and GFP-SPNS1). The central band represents the median, the box represents the interquartile range (IQR) between the 25th and 75th percentile, and the whiskers extend from the box to 1.5*IQR. Each dot represents a cell measurement from different microphotographs of a single replicate.
Figure 6C) Representative images (left) and quantification (right) of the number of acidic particles in PLAC8- and SPNS1-KO Calu1ACE2 cells compared to CRISPR non-targeting control cells (NT596) using live-cell lysotracker staining. The two samples Wilcoxon Test p-value of the pooled observations compared to NT596 cells is indicated above each condition. The central band represents the median, the box represents the interquartile range (IQR) between the 25th and 75th percentile, and the whiskers extend from the box to 1.5*IQR. Each dot represents a cell measurement from different microphotographs of a single replicate. Three biological replicates per condition were used.D) Lysosomal degradation studies in Calu1ACE2 cells using the fluorogenic substrate DQ-Red-BSA. Left: density plots representing the shift in fluorescence intensity in NT596 cells untreated or treated with DQ-Red-BSA under growth or serum starvation conditions. Right: bar plot representing the mean and SEM of the median fluorescence intensity values (MFI) of three biological replicates of PLAC8- and SPNS1-KO and CRISPR non-targeting cells in growth and serum starvation conditions.E) Representative images (left) and quantification (right) of the number of LC3B particles in PLAC8- and SPNS1-KO Calu1ACE2 cells compared to CRISPR non-targeting control cells (NT596) using LC3B immunofluorescence staining. The two samples Wilcoxon Test p-value of the pooled observations compared to NT596 cells is indicated above each condition. The central band represents the median, the box represents the interquartile range (IQR) between the 25th and 75th percentile, and the whiskers extend from the box to 1.5*IQR. Each dot represents a cell measurement from different microphotographs of a single replicate. Three biological replicates per condition were used.F) Autophagic flux analyses using the fluorescence reporter GFP-LC3-RFP-LC3ΔG in PLAC8- and SPNS1-KO Calu1ACE2 cells compared to CRISPR non-targeting control cells (NT596). Left: density plots showing the shift in GFP intensity under starvation conditions compared to control growth conditions in NT596 Calu1ACE2 cells. Right: bar plots showing the mean and SEM of the median GFP/RFP intensity ratio of three biological replicates in the different cell lines and conditions.
Figure 1Induction of UAS constructs and EPs by the ap promoter directed Gal4 expression within the dorsal compartment of the wing imaginal disc: (A) ap-Gal4 control; (B, E, H, J, K) UAS-dS6K; (C, F, I) UAS-S6K1dE/D3E; (D, E, F) DHR3-EP; (G, H, I, K) UAS-DHR3-RNAi and (J) unidirectional DHR3-EP. The bending down of the wing indicates a slight overgrowth of the dorsal compartment, whereas a bending up reveals a slight growth deficit of this compartment.
Figure 2Induction of UAS constructs and DHR3-EP by the eyeless promoter-directed Gal4 expression in the developing eye: (A) eye-Gal4 control; (B, D, E) DHR3-EP; (C, D) UAS-dTsc1 and UAS-dTsc2; (E, F) UAS-dPTEN.