EMBO/SourceData huggingface dataset:
Figure 4A. DNA-RNA hybrids in IGVL and IGCL in wild type and h3.3. The DRIP signal is normalised to total input and to wild type IgVλ (*** = p<0.001, ns = not significant, unpaired T-test).B. MNase mapping reveals that loss of H3.3 does not affect average Igλ nucleosome positioning. The red bars indicate the qPCR amplicons for the MNase mapping. The qPCR signals are normalised to the first amplicon at the TSS. Error bars represent 1SD of 2 experimental repeats.C. DNA-RNA hybrids in IGVL of wild type clones either without overexpression of RNAseHI (red, clones 1 and 2, each assayed with three qPCR repeats) or with overexpression of RNAseHI (blue, clones 3 and 4, each assayed with three qPCR repeats) (*** = p<0.001, ** = p < 0.01; unpaired T-test). Expression of hAIDup-FLAG and chickenRNAseHI-YFP in these clones is shown in Figure EV6.D. Rate of Ig diversification in wild type cells with and without overexpression of RNAseHI.
Figure 5A. Location of ssDNA tracts ≥ 8nt in IGVL in wild type (WT) and h3.3 cells detected by bisulphite sequencing. Data is from three independent experiments, the results from each being shown as black, red and green bars respectively. ssDNA on the coding strand is shown above the marker line (numbered relative to the TSS at 0) and on the template strand below. In the centre, the percentage of G and C bases on the coding strand in a 30 bp rolling average window is shown.B. Quantitation of the bisulphite detection of single stranded DNA in wild type, h3.3 and h3.3 complemented cells, normalised to wild type. p-values calculated with a  test. Sequences analysed: Wild type n = 322, h3.3n = 320 and h3.3 + H3.3 n = 95.C. Bisulphite detection of single stranded DNA in wild type cells with and without RNAseHI overexpression. p-value calculated with a chi‐square test. Sequences analysed: RNAseH1+ve n = 94, RNAseH1-ve n = 90.
Figure 1A. Relative levels of OMA1 mRNA in colorectal cancer tissues (n=105) compared with adjacent normal tissues (n=43) from colorectal cancer patients were shown (using the GEO dataset GSE21510). The data are presented as mean ± SEM, and statistical significance was determined by a Mann-Whitney test. ***p < 0.001.B. Kaplan-Meier curves were constructed to analyze and compare between patients with high and low levels of OMA1 in colorectal cancer samples from the GEO dataset GSE17537. "Low" indicates patients with OMA1 mRNA levels less than the median. "High" indicates patients with OMA1 mRNA levels greater than the median. Statistical analysis was performed using log-rank tests, n = 55, p=0.0180.C. The lysates of tumors (T) and adjacent normal (N) tissues from colorectal cancer patients were analyzed by Western blotting with antibodies against OPA1 or Tubulin. The "c, d and e" bands of OPA1 indicate cleaved OPA1 bands. Tubulin was used as a loading control.D. Control and OMA1 KO HCT116 cells were cultured in hypoxia (1% O2) for 0 (normoxia), 24, or 48 hours. Cell lysates were then assessed by Western blotting with antibodies against OPA1, OMA1, or β-Actin. β-Actin was used as a loading control. Representative immunoblots were from n = 3 independent experiments.E. OPA1-null mouse embryonic fibroblasts (MEFs) expressing control (empty vector) or OPA1 isoform 1 were cultured in normoxia or hypoxia (1% O2) for 24 hours. Cell lysates were analyzed by Western blotting with anti-OPA1 or anti-Tubulin antibody. Representative immunoblots were from n = 3 independent experiments.F. WT, OMA1 KO and OMA1 KO HCT116 cells expressing WT-OMA1(OMA1-Flag) or proteolytic inactive OMA1(E324Q-Flag) were cultured in hypoxia (1% O2) for 0, 24, or 48 hours, and the cell lysates were assessed by western blot with antibodies against OMA1, and GAPDH. β-Actin was used as a loading control (representative data from three independent experiments). The asterisk indicates a nonspecific band. G. The relative protein levels were evaluated by densitometry analysis using ImageJ software and were quantified for the ratio of OMA1-Flag/β-Actin or E324Q-Flag/β-Actin in hypoxia for 0, 24 or 48 hours (n = 3 independent experiments). The data are presented as mean ± SD.
Figure 2B. Body weight changes of WT (n=11) and OMA1-/- (n=12) mice during AOM/DSS treatment. Data are presented as mean ± SEM. Statistical significance was assessed by a two-way ANOVA, **p < 0.01.C. Typical intestine images on day 105 after mice were euthanized. D. Colorectal lengths (C) of WT (n=11 biological replicates) and OMA1-/- (n=12 biological replicates) mice were measured. Data with error bars are presented as mean ± SEM. Statistical significance was assessed by unpaired student's t-test, *p < 0.05. E. Representative images of colorectal tumors from WT (left) and OMA1-/- (right) mice. F. The number of tumors in WT (n=11) and OMA1-/- (n=12) mice was measured. Each dot represents the tumor number of one individual mouse. Data with error bars are presented as mean ± SEM. Statistical significance was assessed by unpaired student's t-test, ***p < 0.001. G, H. The number of tumors of different sizes (diameter) in each mouse (G) and the distribution of different tumor sizes (H) were shown (WT n=11 biological replicates, and OMA1-/- n=12 biological replicates). Results are shown as mean ± SEM. p-values were calculated by unpaired student's t-test, **p < 0.01, ***p < 0.001.I. Histological analysis of colorectal tumors of WT and OMA1-/- mice was shown by hematoxylin and eosin (H&E) staining.J. Relative mRNA expression levels of pro-inflammatory genes (TNFα, IL-6, COX-2, CCL2) in colorectal homogenates of WT and OMA1_KO mice treated with AOM/DSS (n =4-5 per genotype). The data represent the mean ± SEM., n = 3 independent experiments, and statistical significance was determined by a two-tailed student's t-test. *p < 0.05, **p < 0.01.K. The colorectal tissues of WT and OMA1-/- mice were stained with Ki67.
Figure 3A, B. Control or OMA1 KO HCT116 cells expressing control (empty vector) or OMA1-Flag were maintained in normoxia or hypoxia (1% O2) for 24 hours. The glucose uptake (A) and lactate production (B) were measured by using microplate reader, and the values were normalized to the protein concentration. Error bars indicate the mean ± SD of three independent experiments, statistical significance was assessed by a two-way ANOVA, *P < 0.05. Cells were lysed and assessed by western blot with antibodies against OMA1 and GAPDH (A). The asterisk indicates a nonspecific band.C. Control and OMA1 KO HCT116 cells were treated with DMSO or 1mM DMOG in fresh medium for 12 h. Subsequent injections of glucose, oligomycin (Oligo), and 2-deoxy-glucose (2-DG) were performed as indicated. The extracellular acidification rates (ECAR) were measured with a Seahorse Extracellular Flux Analyzer XF96. The data are presented as mean ± SD (n = 3 independent experiments).D. Quantitative analysis of basal and maximal glycolytic capacity. Error bars are presented as mean ± SD (n = 3 independent experiments), statistical significance was assessed by a two-way ANOVA. N.S., not significant, ***p < 0.001.E, F. Lactate production (E) and ATP production (F) were measured in control or OPA1 KO HCT116 cells upon DMSO or 2-DG treatment. Error bars are presented as mean ± SD by a two-way ANOVA (n = 3 independent experiments). N.S., not significant, **p < 0.01, ***p < 0.001.G, H. Control or OPA1 KO HCT116 cells were maintained in normoxia or hypoxia (1% O2) for 24 hours. The glucose uptake (G) and lactate production (H) were measured, and the values were normalized to the protein concentration. Statistical significance was assessed by a two-way ANOVA; error bars are presented as mean ± SD of three independent experiments; N.S., not significant, *p < 0.05, **p < 0.01.
Figure 4A. Control and OMA1 KO HCT116 cells were cultured in normoxia or in hypoxia (1% O2) for 24 or 48 hours. The whole cell lysates were analyzed by Western blotting with antibodies against HIF-1α, HK2, LDHA, PKM2, GPI, OMA1, or β-Actin. The relative protein levels were further evaluated by densitometry analysis using ImageJ software and were presented as bar graphs in the right panels. Error bars are presented as mean ± SD by a two-way ANOVA (n = 3 independent experiments). *p<0.05, **p < 0.01, ***p < 0.001.B. Control or OMA1 KO Hela cells were untreated (-) or CoCl2-treated (+) for 24 hours with 10 mM MG132 or vehicle added for the last 4 hours. Cell lysates were assessed by Western blotting with antibodies against HIF-1α or β-Actin. Relative protein levels were further evaluated by densitometry analysis. Error bars indicate the mean ± SD by a two-way ANOVA (n = 3 independent experiments). *p<0.05, **p < 0.01.C. Dihydroethidium (DHE) staining of optimum cutting temperature (OCT) covered tissues from the colons of WT and OMA1-/- mice; DAPI was used as counterstain. DHE was shown in red color, while DAPI in blue color (representative data from three independent experiments). D. Quantification of DHE staining. Error bars are presented as mean ± SD (n=3 biological replicates), statistical significance was assessed by a two-way ANOVA, **p < 0.01, ***P< 0.001. E. Control or OMA1 KO HCT116 cells cultured in normoxia or hypoxia (1% O2) for 12 hours were stained with mitoSOX, and then analyzed by confocal microscopy (representative data from three independent experiments). F. The fluorescence intensity of mitoSOX was further analyzed by ImageJ software. Bars indicate the mean ± SD of three independent experiments by a two-way ANOVA, ***p < 0.001. G-I. Control or OMA1_KO HCT116 cells were cultured in normoxia or hypoxia for 12 hours, and were treated with DMSO, NAC (10 mM) or Rotenone (1 μM) for 12 hours at the same time. The whole cell lysates were analyzed by Western blotting with antibodies against HIF-1α, and Tubulin (G). The glucose uptake (H) and lactate production (I) were measured using microplate reader, and the values were normalized to the protein concentration. Error bars indicate the mean ± SD (n = 3 independent experiments), statistical significance was assessed by two-way ANOVA. N.S., not significant, *P < 0.05, ***P< 0.001.
Figure 5A. 293T cells were transiently co-transfected with empty vector and NDUFB5-MYC, or OMA1-E324Q-Flag and NDUFB5-MYC. Cell lysates were used for co-immunoprecipitation with anti-Flag M2 affinity gel at 4°C overnight, followed by Western blotting with anti-Flag or anti-MYC antibodies (n = 3 independent experiments).B. 293T cells were transiently co-transfected with empty vector and NDUFB6-GFP, or OMA1-E324Q-Flag and NDUFB6-GFP. Cell lysates were used for co-immunoprecipitation with anti-Flag M2 affinity gel at 4°C overnight, followed by Western blotting with antibodies against Flag or GFP (n = 3 independent experiments).C. 293T cells were transiently co-transfected with empty vector and COX4L1-GFP, or OMA1-E324Q-Flag and COX4L1-GFP. Cell lysates were used for coimmunoprecipitation with anti-Flag M2 affinity gel at 4°C overnight, followed by Western blotting with anti-Flag or anti-GFP antibodies (n = 3 independent experiments).D. 293T cells were transiently co-transfected with empty vector and NDUFA4-GFP, or OMA1-E324Q-Flag and NDUFA4-GFP. Cell lysates were used for coimmunoprecipitation with anti-Flag M2 affinity gel at 4°C overnight, followed by Western blotting with antibodies against Flag or GFP (n = 3 independent experiments).E. HCT116 cells stably expressing control (empty vector) or OMA1-Flag, and HCT116 cells infected with control or shOMA1 (OMA1 knockdown) lentiviral particles and further cultured for 5 days, were then treated with DMSO or 20 μm CCCP for 4 hours. Cell lysates were analyzed by Western blotting with antibodies against NDUFA4, COX4L1, NDUFB5, DNUFB6, MT-CO2, OMA1 or Tubulin. The black arrowhead indicated the full-length COX4L1 or NDUFB6, and the red arrowhead pointed to the cleaved band. The asterisk indicates a nonspecific band.F. WT, OMA1 KO and OMA1 KO HCT116 cells expressing WT-OMA1(OMA1-Flag) or proteolytic inactive OMA1(E324Q-Flag) were treated with CHX (100 µg/ml) plus CCCP (20 µM) for 0, 2, 4, 6 hours. The cell lysates were then assessed by western blot with antibodies against NDUFA4, COX4L1, NDUFB5, NDUFB6, OMA1 or HSPD1 (representative data from three independent experiments). The asterisk indicates a nonspecific band.G. Control or OMA1 KO HCT116 cells were cultured in hypoxia (1% O2) for 0, 24, or 48 hours. Cell lysates were assessed by Western blotting with anti-NDUFB5, anti-NDUFB6, anti-COX4L1, anti-NDUFA4 antibodies, or anti-β-Actin. The relative protein levels were further evaluated by densitometry analysis using ImageJ software and were presented as bar graphs in the right panels. Error bars are presented as mean ± SD by a two-way ANOVA (n = 3 independent experiments). *p<0.05, **p < 0.01, ***p < 0.001.
Figure 6A. Mitochondria isolated from tumors (T) or adjacent normal (N) tissues of WT and OMA1-/- mice were subjected to blue native PAGE (BN-PAGE), and respiratory chain complexes were analyzed by Western blotting with anti-NDUFB8 (Complex I), anti-SDHA (Complex II), anti-COX4L1 (Complex IV), and anti-ATP5A1 (Complex V, ATP synthase) antibodies. SDS-PAGE with antibody against HSPD1 was used as a loading control. Relative protein levels were further evaluated by densitometry analysis using ImageJ software. Error bars are presented as mean ± SD by a two-way ANOVA (n = 3 independent experiments). *p<0.05, **p < 0.01, ***p < 0.001.B. Digitonin-solubilized mitochondria were isolated from control and OMA1 KO HCT116 cells cultured in normoxia or hypoxia (1% O2) for 12 hours, and then analyzed by BN-PAGE and immunoblotting using the indicated antibodies against NDUFB8 (Complex I), SDHA (Complex II), NDUFA4 (Complex IV), and ATP5A1 (Complex V). SDS-PAGE with antibody against HSPD1 was used as a loading control. Relative protein levels were further evaluated by densitometry analysis using ImageJ software. Error bars are presented as mean ± SD by a two-way ANOVA (n = 3 independent experiments). N.S., not significant, *p<0.05.C. The lysates of adjacent normal tissues (N) or tumors (T) from WT and OMA1-/- mice were analyzed by Western blotting with antibodies against NDUFA4, COX4L1, NDUFB5, DNUFB6, UQCRC2, or Tubulin. Relative protein levels were further evaluated using ImageJ software. Error bars indicate the mean ± SD by a two-way ANOVA (n = 3 independent experiments). *p<0.05, ***p < 0.001.
Figure 1Representative confocal images of the FtsZ·SlmA·SBS condensates formed in 150 g/L dextran 500 or Ficoll 70, and absence of condensates in dilute solution. Scale bars: 20 μm, except for images at higher magnification in dextran (5 μm, second row).Turbidity of FtsZ·SlmA·SBS in buffer (n = 3), in 150 g/L dextran 500 (n = 5) or Ficoll 70 (n = 3) and in 50 g/L PEG 8 (n = 3). Data correspond to the average ± S.D.
Figure 2Formation of condensates as a function of FtsZ and SlmA·SBS concentration, as measured by turbidity, in working buffer (300 mM KCl). SlmA concentration was fivefold that of SBS (except at 0.5 μM SBS, where SlmA concentration was 3 μM). Data are the average of 2 independent measurements. Errors (S.D.), symmetrical, are depicted as white discs.Representative confocal images of the FtsZ·SlmA·SBS condensates at the specified salt concentrations. The concentrations of FtsZ, SlmA and SBS were 12, 5 and 1 µM, respectively. Scale bars: 5 μm. Data information: All measurements in 150 g/L dextran 500.
Figure 3Representative confocal images showing final state after addition of FtsZ-Alexa 488 to FtsZ·SlmA·SBS complexes (FtsZ labeled with Alexa 647) in 150 g/L dextran. Below, images showing the stepwise diffusion of FtsZ-Alexa 488 into the condensates containing FtsZ-Alexa 647 at the indicated times in seconds (time zero, beginning of visualization for that particular condensate) and corresponding intensity profiles at selected times in the green channel. The profile in the red channel is shown as a reference and varies slightly among images. Scale bars: 5 μm (top row) and 4 μm (bottom row).Stepwise diffusion of FtsZ-Alexa 488 into FtsZ·SlmA·SBS condensates (FtsZ labeled with Alexa 647) at the indicated times in seconds (time zero, beginning of visualization for those particular condensates) in 100 g/L PEG. Scale bars: 4 μm.Assembly of FtsZ fibers upon GTP addition (0.5 mM) to FtsZ·SlmA·SBS condensates and condensates formed after FtsZ fibers disassembly at the indicated times in minutes (time zero, GTP addition) in 150 g/L dextran. Scale bars: 5 μm. Scheme of the dynamic process on the right. The number of condensates decreases upon fibers formation, and they rearrange upon GTP depletion and fibers disassembly.
Figure 4B-D. Representative confocal images of the microdroplets without (B) and with GTP (C and D). The concentrations of FtsZ, SlmA and SBS were 12, 5 and 1 μM, respectively (B and C) or 6, 3 and 0.5 μM respectively (D). 1 mM (C) or 2 mM GTP (D). Scale bars: 40 μm except in images on the far right (20 μm), which are either a magnification of the indicated region in the merged image (B) or independent images at higher magnification (C, D).
Figure 5B,C. Representative confocal images of the microdroplets stabilized by the E. coli lipid mixture containing the biphasic PEG/DNA mixture and the FtsZ·SlmA·SBS complex without and with 2 mM GTP, respectively. Last image in (B) focuses in the lipid interface to show the high density of condensates. Scale bars: 20 μm except in images on the far right (10 μm), which are an independent image at higher magnification (B) or a magnification of the indicated region in the merged image (C).
Figure 1(A) A431 WT and SKO cells -/+ GFP-fused WT or A212P-seipin were delipidated, treated with OA for 1 h, fixed and stained with LD540. Maximum intensity projections of deconvolved confocal z-stacks. Dashed lines indicate cell boundaries. (B) Analysis of LD areas of cells treated as in (A) and imaged with widefield microscopy. Bars: % of LDs/cell in indicated size category, mean ± SEM, n=57-61 cells/genotype, 2 experiments, p**< 0.005 (unpaired T-test).(C) SKO + WT- or A212P-seipin-GFP cells were stained for calreticulin. Maximum intensity projections of deconvolved confocal z-stacks.(D) SKO + WT- or A212P-seipin-GFP cells were grown in standard growth medium, fixed and stained with anti-GFP antibodies. Widefield and STORM images.(E) SKO + WT-seipin-GFP cells were delipidated and treated with OA for 1h, fixed and stained with LipidTox Red. Single focal plane of a 3D-SIM z-stack. (F) Analysis of (E), bars: % of LDs/cell with the indicated number of WT-seipin-GFP punctae associated, mean ± SEM, n=12 cells (693 LDs), 2 experiments, p**< 0.005 (Tukey multiple comparisons test).(G) SKO + WT- or A212P-seipin-GFP cells were delipidated, incubated with OA for 30 min, and immunolabelled for TEM with anti-GFP antibodies. Black arrowheads: immuno-gold, orange arrowheads: ER-LD junctions. See also Appendix Fig S3. (H) Analysis of (G), bars: relative labeling index in different cellular compartments, n=3456-4512 immuno-gold clusters. Distribution of both WT- and A212P-GFP-seipin immunolabel is non-random (chi square test, **p<0.005), but there is significant enrichment of WT- but not A212P-seipin-GFP at ER-LD contacts relative to the ER (binomial test, **p<0.005). See also Appendix Table S1 and S2.(I) A431 WT cells with seipin tagged with sf-GFP at its chromosomal locus and stably expressing ER marker plasmid (BFP-KDEL) were delipidated and treated with OA for 1 h, fixed and stained with LipidTox Red. Single confocal plane of an airyscan z-stack.
Figure 2(A) SKO cells stably expressing WT-seipin-GFP cells were delipidated and then incubated with OA and LipidTox Deep Red for 30-75 min. Airyscan video snapshots, upper panel: an example of 2 seipin-GPF punctae, one stably associated with a LD (blue arrowhead) and another not LD associated (orange arrowhead). Lower panel: an example of a mobile LD, with a single seipin puncta moving together with it (blue arrowhead). (B) Analysis of (A), bars: mean velocity of tracked seipin puncta ± SEM, n=13 ROIs from 13 cells, 90 puncta, 2 experiments, **p<0.005 (unpaired T-test).(C) Analysis of LD mobility in WT and SKO cells. Cells were incubated with OA for 45-75 min, LDs were visualized with LD540 and cells imaged by widefield microscopy. Bars: 1 - [Pearson's colocalization coefficient between subsequent frames/cell], ± SEM, n= 149-151 cells, 2 experiments, **p<0.005 (Mann Whitney test). (D) Examples of LD trajectories from cells treated and imaged , arrowhead indicates the tracked LD. (E) Analysis of the LD mobility from (C) and (D), individual LDs plotted for volume and mean velocity.(F) WT and SKO cells were transfected with ER marker plasmid (sfGFP-ER-3, green), delipidated overnight and incubated with OA and LipidTox Deep Red (magenta) for 15-75 min. Airyscan video snapshots exemplifying different modes of LDER-associated movement, note the different time scales. Panel I and II: WT cell, panel III: SKO cell. (G) Analysis of LDER-associated movement from live airyscan microscopy as in (F). Bars: % of LDs/ROI displaying indicated mode of movement, ± SEM, n= 43-55 ROIs (201-467 LDs) from 4 experiments, **p<0.005 (Mann Whitney test). (H) Analysis of LD velocity. Bars: mean velocity of tracked LDs, ± SEM, n=29-42 LDs/group, 2 experiments, **p<0.005 (Kruskal-Wallis test, followed by Dunn test).(I) WT and SKO cells stably expressing HSP47-APEX were delipidated, treated with OA for 1 h and processed for SB-EM. 3D models of LDs and surrounding ER and mitochondria profiles shown on top of a block face image from SB-EM dataset. Insets are representative cross sections from modeled area highlighting the ER-LD association. Red= LD, Yellow= ER, Green=mitochondria. (J) Analysis of LDs from (I). Black lines indicate median, boxes third quartiles, n= 98-227 LDs. (K) Analysis of LDs displaying no ER contacts from (I). Bars: mean % of LDs in ROIs not in proximity to the ER, ± SEM, n= 11-16 ROIs/genotype, **p<0.005 (unpaired T-test).
Figure 3(A) WT and SKO cells were treated with OA for 1 h and processed for ET. Representative single tomographic slices of ER-LD contacts. Orange arrowheads indicate narrow ER-LD contacts, blue arrowheads indicate widened ER profiles seen in SKOcells. (B) 3D-models of LDs and ER-LD contacts based on tomograms in (A). Yellow: ER, brown: LD, red: ER-LD contacts.(C) Exemplary TEM image of a WT cell incubated with OA for 1h. A grid is randomly placed on top of the image and the width of perpendicularly oriented ER profiles passing through grid lines are measured. Yellow lines indicate measured sites. (D) ER profile analysis of (C). Bars: average profile width/cell, ± SEM, n= 11-9 cells (149-224 profiles), *p<0.05 (unpaired T-test).
Figure 4(A) WT and SKO cells stably expressing ACSL3-Cherry were transfected with ADRP-GFP for 24 h, incubated with OA for 1 h, fixed and stained with LD540. Single confocal planes of deconvolved confocal z-stacks. (B) Colocalization analysis of (A), from single confocal sections. Bars: correlation coefficient m1 ± SEM, n=34-35 cells/genotype, 2 experiments, **p<0.005 (unpaired T-test).(C) WT and SKO cells were transfected with ADRP-GFP for 24 h, incubated with OA for 2 h and co-plated with delipidated WT or SKO cells stably expressing ACSL3-Cherry. After co-plating, cells were incubated for 2.5 h in normal growth medium, then fused together using PEG. Cells were fixed and imaged 1 h post-fusion. Single confocal planes.(D) Colocalization analysis of (C). Bars: correlation coefficient m1 ± SEM, n=31-39 cells/treatment, 3 experiments, **p<0.005 (Tukey's test). Similar results were obtained when cells were kept in delipidation medium after co-plating.(E) WT and SKO cells were treated with OA for 1 h, fixed and stained with anti-ACSL3 antibodies and LD540. Representative sections of peripheral ER areas, single confocal planes of deconvolved z-stacks. (F) Analysis of (E), insets illustrate assigned categories of ACSL3LD association. Bars: % of LDs/ROI in the indicated category, mean ± SEM, n= 9-10 peripheral ROIs from 9-10 cells/treatment (616-968 LDs), 3 experiments, **p<0.005 (unpaired T-test).(G) TEM images of anti-ACSL3-labeled WT and SKO cells treated with OA for 1 h. (H) Analysis of (G), n= 66-119 LDs from 8 cells/genotype.