EMBO/SourceData huggingface dataset:
Figure 6(E) Representative transport current recordings from cells expressing L448A or L448T (GltPh A360) or WT EAAT1 upon voltage jumps to ˗140 mV before and after superfusion with 1 mM l-glutamate. Cells were intracellularly dialyzed with a K+-free solution without permeating anions to isolate K+-independent transport currents. Transient capacitive currents during the first 5 ms after a voltage jump were blanked.(F) Current-voltage relationship for net transport current amplitudes for WT and L448A/T EAAT1 (GltPh A360) for choline-based pipette solutions. Values are given as mean ± SD with indicated numbers of experiments.(G) Time-dependent changes in L448A EAAT1 (GltPh A360) uptake currents during two repetitive glutamate applications and subsequent removals. Current amplitudes were measured at the end of voltage jumps to -140mV and plotted versus the time. Glutamate application is indicated by green bars. Values are given as mean ± SD of the last 100 data points in the current trace.(H) Net transport current amplitudes for WT and L448A/T EAAT1 (GltPh A360) for different pipette solutions, Values are given as mean ± SD with indicated numbers of experiments (***, p<0.001 Student's t-test).
Figure 7(E) Representative transport current recordings from a cell expressing R478A EAAT2 (GltPh R397) in the absence of internal K+. Transport currents were elicited by voltage jumps to -140mV before and after superfusion with 5 mM l-serine. Transient capacitive currents during the first 5 ms after a voltage jump were blanked.(F) Time-dependent changes in steady-state R478A EAAT2 (GltPh R397) uptake currents during two consecutive serine applications and subsequent removals. Current amplitudes were measured at the end of voltage jumps to -140mV and plotted versus time. Serine application is indicated by green bars. Values are given as mean ± SD of the last 100 data points in the current trace.(G) Current-voltage relationship for mean net transport currents for R478A EAAT2 induced by 5 mM l-serine for different intracellular solutions. Values are given as mean ± SD for the indicated number of experiments.(H) Mean net transport currents for WT and R478A EAAT2 (GltPh R397) induced by 5 mM l-serine for different intracellular solutions. Values are given as mean ± SD for the indicated number of experiments.
Figure 1(A) Family pedigree. Variant segregation analysis of PSMC3. Electropherogram of a part of intron 10 of PSMC3 encompassing the identified variation (c.[1127+337A>G];[1127+337A>G], p.[(Ser376Arg15*)];[(Ser376Arg15*)]) in the affected individuals, their unaffected parents and siblings. The variation was found at the homozygous state in the affected individuals (II.2, II.4, II.7), at the heterozygous state in the parents (I.1, I.2, I.3, I.4, I.5, I.6) and was either at the heterozygous state (II.5) or absent in the unaffected siblings (II.1, II.3, II.6).(B) Face (up) and profile (down) photographs for patients II.4 (a: 8 yo, b: 16 yo), II.2 (c: 6 yo, d: 14 yo) and II.7 (e: 1 yo, f: 7 yo) over time. One can observe prominent supraciliay arches, synophris, sunken cheeks, short philtrum and retrusion in the malar region.(C) Sub cutaneous calcifications found only on knees (g: 9 yo and h: 16 yo) on elbows (i: 9 yo) of patient II.4. White hair were present only on the legs of the 3 patients as illustrated for patient II.4 (j: 16 yo).(D) Temporal bone CT-scan from patient II.7 (left column) and a control (right column) showing malformation of the semicircular canal. The left ear is shown on the upper panels while de right ear on the lower panels.(E) Amplification of the cDNA fragment between exons 9-10 and 11 of PSMC3 showing the abnormally spliced RNA fragment. One band at 180bp representing the normal allele is seen for the control and two bands for the individual II.4 (pathologic allele at 300bp).
Figure 2(A) Anti-ubiquitin western blot in control and patient fibroblasts and total amount of proteins loaded (stainfree) showing increased ubiquitination in patient cells (lane 4).(B) Histogram showing the quantification of ubiquitin with western blot assays. The data shown correspond to the sum of all bands detected by the anti-ubiquitin antibody expressed as a percentage of the amount of ubiquitin in "Control 1" cells. Bars show mean of ten independent experiments +/- SD (n=10, t-test *: p<0.01, **: p<0.05).(C) Mass spectrometry results from the co immunoprecipitation with PSMC3 are displayed as the normalized total number of spectra count of each protein computed as the mean from 3 controls (x axis) vs the mean of patient II.4 triplicate. Proteasome subcomplexes are colored according to the displayed legend and standard ratio lines are drawn.
Figure 3(A) Whole-cell lysates from control and patient (case index, CI) fibroblasts were assessed by 3-12% native-PAGE gradient gels with proteasome bands (30S, 26S and 20S complexes) visualized by their ability to cleave the Suc-LLVY-AMC fluorogenic peptide.(B) Ten micrograms of control and patient cell lysates were tested for their chymotrypsin-like activity by incubating them with 0.1 mM of the Suc-LLVY-AMC substrate at 37°C over a 180-h period of time in quadruplicates on a 96-well plate. Indicated on the y-axis are the raw fluorescence values measured by a microplate reader and reflecting the AMC cleavage from the peptide. Bars show the mean of 4 independent experiments +/- SD.(C) Proteasome complexes from control and patient fibroblasts separated by native-PAGE were subjected to western-blotting using antibodies specific for α6, Rpt5 (PSMC3) and PA28-α, as indicated.(D) Proteins extracted from control and CI PSMC3 were separated by 10 or 12.5% SDS-PAGE prior to western-blotting using primary antibodies directed against ubiquitin and several proteasome subunits and/or components including α6, β1, β; β5, β5i, Rpt2 (PSMC1), Rpt5 (PSMC3), Rpt3 (PSMC4), Rpt4 (PSMC6) and PA28-α, as indicated. For the PSMC3 staining, two exposure times are shown. Arrow indicates an additional PSMC3 species corresponding to the expected size of the truncated PSMC3 variant. Equal protein loading between samples was ensured by probing the membrane with an anti-α-Tubulin antibody.
Figure 5(A) Control and/or patient (index case, IC PSMC3) fibroblasts were subjected to a 24-h transfection with pcDNA3.1/empty vector (mock) or pcDNA3.1/PSMC3 prior to RIPA-mediated protein extraction and subsequent western-blotting using antibodies specific for ubiquitin, PSMC3 (i.e. Rpt5) and α-Tubulin (loading control).(B) Densitometry analysis showing the relative ubiquitin contents detected by western blotting in patient fibroblasts exposed to either pcDNA3.1/empty vector (mock) or pcDNA3.1/PSMC3, as indicated. The y-axis represents the percent changes in densitometry measurements (of pixel intensities using Image J) which are set as 100 % for cells transfected with the pcDNA3.1/empty vector (mock) at 24 post-transfection (n=4, *: p<0.05, t-test). Bars show the mean +/- SEM.(C) Patient (index case, IC PSMC3) fibroblasts transfected with either pcDNA3.1/empty vector (mock) or pcDNA3.1/PSMC3 were exposed to a 30-nM treatment of carfilzomib or left untreated (as a negative control). After 16 hours, cells were collected and subjected to RIPA-mediated protein extraction prior to SDS-PAGE and subsequent western-blotting using antibodies specific for ubiquitin, TCF11/Nrf1, Rpt1 (PSMC2), Rpt3 (PSMC4), Rpt5 (PSMC3), Rpt6 (PSMC5), β1, β2, β5, β5i, PA28-α and α-Tubulin (loading control), as indicated. For the TCF11/Nrf1 staining, two exposure times are shown.
Figure 6(B-B'). Cataract detection revealed abnormal lens reflection in psmc3 morpholino (MO)-mediated knockdown but not in controls (uninj, ctrl-mo). Similarly, abnormal lens reflection was also observed in embryos injected with sgRNA + Cas9 but not in sgRNA injected embryos without Cas9 (sgRNA2). Co-injection of wt psmc3 mRNA with either psmc3-mo or sgRNA2 + Cas9 reduced the number of embryos presenting abnormal lens reflection. Scale bar = 50 µm. (B') Quantification of embryos with abnormal lens reflection.(D-D') bright field images of inner ear development (lateral position). (D) Epithelial projections were fused and formed canal pillars in 4-day-old uninjected and control injected fish (ctrl-mo, sgRNA2) but not in morphants (mo) and crispants (sgRNA2+Cas9). Co-injection of wt psmc3 mRNA with psmc3-mo or sgRNA + Cas9 reduced the number of embryos presenting abnormal ear phenotype. Black asterisks indicate fused pillars. Red arrowheads mark unfused projections. Scale bar = 100 µm. (D') Quantification of embryos with abnormal projection outgrowth.(E-E') An anti-acetylated tubulin antibody (green) staining revealed an abnormal amount of kinocilia in psmc3 crispants (sgRNA2+Cas9) compared to uninjected and control injected embryos (sgRNA2). Nuclei are stained in blue with DAPI. Representative images show kinocilia of the lateral cristae. Scale bar = 20 µm. (E') Quantification of embryos with an abnormal amount of kinocilia.
Figure 1(B) Phenotyping of the same mice, presented in the same order, inoculated i.n. with 0.3 × 105 TCID50 of SARS-CoV-2 at the age of 5-7 wks and viral RNA content was determination in the indicated organs at 3 dpi by conventional E-specific qRT-PCR. Red lines indicate the qRT-PCR limits of detection.(C, D) Quantification (C) and images (D) of hACE2 protein expression level by Western blot from the lungs of the same mice as in panels A and B, presented in the same order.
Figure 2(B-E) Examples of lesions observed in the lungs of infected mice at higher magnification. The two top panels depict mild (B) (scale bar: 100 μm) and mild to moderate (C) interstitium thickening accompanied by dense inflammatory infiltrates predominantly localized in the vicinity of bronchioles (yellow stars) and also present around blood vessels (green stars) (scale bar: 200 μm). (D) Alveoli filled with a proteinaceous exudate containing a few cells (green arrows) (scale bar: 50 μm). (E) Discrete degenerative lesions of the bronchiolar epithelium, such as perinuclear clear spaces (blue arrows), hyper-eosinophilic cells with condensed nuclei (orange arrow) and some intraluminal fibrinous and cell debris (black arrow) in an overall well-preserved epithelium (scale bar: 20 μm).(G) Representative NCoV-2-specific IHC image of the brain in NI control or SARS-CoV-2-infected mice at 3 dpi. Scale bar: 500 μm. (H) Closer view of a NCoV-2 positive area from an infected mouse. Scale bar: 500 μm.
Figure 3(A) Comparative permissiveness of various organs from B6.K18-hACE2IP-THV and B6.K18-ACE22prlmn/Jax transgenic mice (n = 5-6/group) to SARS-CoV-2 replication, as determined at 3 dpi by conventional E-specific or sub-genomic Esg-specific qRT-PCR. Red lines indicate the qRT-PCR limits of detection. (B) Comparative quantitation of hACE-2 mRNA in the lungs and brain of B6.K18-hACE2IP-THV and B6.K18-ACE22prlmn/Jax transgenic mice (n = 5-6/group). Data information: Statistical significance was evaluated by Mann-Whitney test (*= p < 0.05, **= p <0.01, ns = not significant).(C) Heatmaps represent log2 fold change in cytokine and chemokine mRNA expression in the lungs or brain of B6.K18-hACE2IP-THV and B6.K18-ACE22prlmn/Jax mice at 3 dpi (n = 5-6/group). Data were normalized versus untreated controls.
Figure 4(C) Viral RNA content as determined in various organs at 3 dpi (n = 6/group) by use of conventional E-specific or sub-genomic Esg-specific qRT-PCR. Red lines indicate the qRT-PCR detection limits. Data information: Statistical significance was evaluated by Mann-Whitney test (* = p<0.05, ** = p<0.01).(D) Percentages of NK cells or neutrophils in the lungs of LV::S- or sham-vaccinated and SARS-CoV-2-challenged B6.K18-hACE2IP-THV transgenic mice at 3 dpi (n = 6/group). Percentages were calculated versus total lung live CD45+ cells. Data information: Statistical significance was evaluated by Mann-Whitney test (* = p<0.05, ** = p<0.01).(E) Relative log2 fold change in cytokine and chemokine mRNA expression in the brain of LV::S- or sham-immunized and SARS-CoV-2-challenged B6.K18-hACE2IP-THV transgenic mice at 3 dpi (n = 6/group). Means ± SD are shown. Data were normalized versus untreated controls. Data information: Statistical significance was evaluated by Mann-Whitney test (* = p<0.05, ** = p<0.01).
Figure 5B6.K18-hACE2IP-THV mice were primed (i.m.) at wk 0 and boosted (i.n.) at wk 5 (n = 5) with non-integrative LV::S. Control mice were injected with an empty LV (sham). (B, C) Cytometric strategy to detect lung CD8+ T central memory (Tcm, CD44+CD62L+CD69-), T effector memory (Tem, CD44+CD62L-CD69-) and T resident memory (Trm, CD44+CD62L-CD69+CD103+) and (C) percentages of these subsets among CD8+ T-cells in LV::S-vaccinated (n = 9) or sham (n = 5) mice. Data information: Statistical significance of the difference between the two groups was evaluated by Mann-Whitney test (*= p < 0.05, **= p <0.01).B6.K18-hACE2IP-THV mice were primed (i.m.) at wk 0 and boosted (i.n.) at wk 5 (n = 5) with non-integrative LV::S. Control mice were injected with an empty LV (sham). (D) Cytometric strategy to detect SCoV-2-specific CD8+ T cells by use of the H-2Db-SCoV-2:538-546 dextramer in the lungs of LV::S or sham-vaccinated mice. Inside CD8+ dextramer+ T-cell subset, Tcm, Tem and Trm have been distinguished.B6.K18-hACE2IP-THV mice were primed (i.m.) at wk 0 and boosted (i.n.) at wk 5 (n = 5) with non-integrative LV::S. Control mice were injected with an empty LV (sham). (F, G) Anti-SCoV-2 IgG or IgA titers (F) and neutralizing activity (EC50) (G) in the sera or lung homogenates at 3 dpi. Samples from individual mice (n = 4/group) were studied. Data information: Statistical significance of the difference between the two groups was evaluated by Mann-Whitney test (*= p < 0.05, **= p <0.01).
Figure 6(A) B6.K18-hACE2IP-THV mice were immunized with LV::S via i.m. or i.n. at wk 0 and boosted via i.m. or i.n. at wk 5 (n = 5/group) with non-integrative LV::S. Control mice were injected i.m. i.n. with an empty LV (sham). Viral RNA contents were determined by conventional E-specific RT-PCR at 3 dpi, in the brain, lung and nasal washes. Data information: Statistical significance was evaluated by Mann-Whitney test (*= p < 0.05, **= p <0.01, ****= p < 0.0001, ns = not significant).(B) Lung histology in B6.K18-hACE2IP-THV mice, vaccinated with LV::S after SARS-CoV-2 inoculation. H&E (rows 1 and 3) (scale bar: 500 μm) and NCoV-2-specific IHC (rows 2 and 4) (scale bar: 50 μm) staining of whole lung sections (scale bar: 50 μm) from the primed (i.m.), boosted (i.n.) and challenged B6.K18-hACE2IP-THV mice compared with their sham controls. H&E and NCoV-2-specific IHC were performed on contiguous sections. The IHC fields correspond to the rectangles in the corresponding H&E images above them. A representative NCoV-2-specific IHC on a lung section from a non-infected (NI) mouse is also shown.
Figure 7(A) Example of CD3-positive cells in an olfactory bulb from an LV::S i.m.-i.n. vaccinated and protected mice and representative results from this group versus sham-vaccinated and unprotected mice at 3 dpi (n = 7-9/group). Scale bar: 50 μm. Statistical significance was evaluated by Mann-Whitney test (**= p <0.01).Cytometric analysis of cells extracted from pooled olfactory bulbs from the same groups.Cytometric analysis of cells extracted from pooled olfactory bulbs from the same groups. (C, D) Innate immune cells in the olfactory bulbs (C) or brain (D). The CD11b+ Ly6C+ Ly6G+ population in the olfactory bulbs are neutrophils and the CD11b+ Ly6C+ Ly6G- cells of the brain are inflammatory monocytes.(E) Brain H&E histology at 3 dpi. The top right and both bottom panels show examples, in two different mice, of leukocyte clusters (arrows) alongside the ventricular wall. No such clusters were detected in the LV::S i.m.-i.n. vaccinated mice (top left panel). Scale bar: 200 μm. The close up view (bottom right panel) highlights the thickened, disorganized ependymal lining, compared to the normal ependymal cells and cilia of an LV::S i.m.-i.n. vaccinated mouse (top left panel). Scale bar: 50 μm.
Figure 8(B) Brain or lung viral RNA contents, determined by conventional E-specific or sub-genomic Esg-specific qRT-PCR at 3 dpi. Two mice out of the 5 sham-vaccinated mice did not have detectable viral RNA in the lungs despite high viral RNA content in the brain and hACE2 mRNA expression levels comparable to that of the other mice in the same group. Data information: Statistical significance was evaluated by Mann-Whitney test (*= p < 0.05, **= p < 0.01, ****= p < 0.0001).(E) Wild type or µMT KO mice (n = 5-9/group) were injected by LV::S or sham following the time line shown in (A), then pretreated with Ad5::hACE2 4 days before challenge with the ancestral SARS-CoV-2 strain. Lung viral RNA contents were determined at 3 dpi. Data information: Statistical significance was evaluated by Mann-Whitney test (*= p < 0.05, **= p < 0.01, ****= p < 0.0001).
Figure 1A-C Confocal images of primary hepatocytes grown under indicated conditions and stained with anti-CLUH antibody and Hadha (A), Pcx (B) and Actb (C) mRNA in situ hybridization. Right panels show 5x magnified boxed areas. Scale bar, 10 μm. D-F Manders' colocalization coefficient between Hadha (D) Pcx (E) and Actb (F) mRNA molecules and CLUH signal (n ≥ 50 cells isolated from 3-6 mice). Data information: In (D-F), data are presented as boxplots showing the median, the first and the third quartile. Error bars show minimum and maximum values. ***, P≤0.001 (Student's t-test).G, H Confocal images of primary hepatocytes grown in HBSS and stained with anti-CLUH and anti-TIA-1 (G) or anti-G3BP1 (H) antibodies. Right panels show 5x magnified boxed areas. Scale bar, 10 μm.
Figure 2A Confocal images of primary hepatocytes grown under indicated conditions and treatments after ribopuromycylation assay stained with anti-puromycin antibody. Scale bar, 10 μm. B Quantification of fluorescence intensity per cell of experiment shown in (A). AU, arbitrary units. (n= 90-110 cells per treatment isolated from 4 mice). Data information data are presented as boxplots showing the median, the first and the third quartile. Error bars show minimum and maximum values.C Quantification of the number of puromycin granules under indicated conditions (n ≥ 50 cells isolated from 4 mice). Data information: data are presented as boxplots showing the median, the first and the third quartile. Error bars show minimum and maximum values. ***, P≤0.001; **, P≤0.01 (Student's t-test).D Confocal images of primary hepatocytes stained with anti-puromycin and anti-CLUH antibodies. The cells from which the enlarged areas (400 μm2) have been magnified are shown in Appendix Figure S1B for each individual channel. Scale bar, 4 μm. Cells analyzed were isolated from 4 different mice with similar results. Arrows point to colocalizing particles.E Manders' colocalization coefficient between puromycin and CLUH from experiment shown in (D) (n ≥ 50 cells isolated from 4 mice). Data information: data are presented as boxplots showing the median, the first and the third quartile. Error bars show minimum and maximum values. (E) ***, P≤0.001 (One-way ANOVA, Tukey's multiple comparisons test).F Quantification of puromycin granules containing CLUH signal (n ≥ 80 cells isolated from 4 mice). Data information: data are presented as boxplots showing the median, the first and the third quartile. Error bars show minimum and maximum values. ***, P≤0.001; **, P≤0.01 (Student's t-test).
Figure 4A Representative western blot of HeLa cells downregulated for G3BPs and overexpressing untagged CLUH. Asterisks indicates signal of previous incubation with anti-G3BP1 antibody. Pan-actin was used as loading control.B Confocal images of anti-CLUH staining in HeLa cells downregulated for G3BPs and overexpressing untagged CLUH. Insets show 2.6x enlarged area. Scale bar, 10 µm. C Quantification of cells with CLUH-granules from experiments shown in (B) (n=3 independent experiments, >50 cells per experiment per condition). Data information data are presented as histograms showing the mean ± SEM. *, P≤0.05; **, P≤0.01; ***, P≤0.001 (One-way ANOVA, Tukey's multiple comparisons test). D Life imaging of WT and CLUH KO HeLa cells transfected with G3BP1-GFP plasmid and incubated in HBSS medium with or without CHX. Cells were recorded for a maximum of 2 h. Insets show 2.5x enlarged areas. Scale bar, 10 µm. E Total number of cells analyzed by life imaging for the indicated experiments shown in (D). "Positive" relates to a cell which formed G3BP1 granules at the end of the recording. F Confocal images of anti-G3BP1 staining in primary hepatocytes derived from Li-CluhWT and Li-CluhKO mice grown in indicated media. Arrows point to G3BP1-granules. Scale bar, 10 µm. G Quantification of percentage of cells with G3BP1-positive granules of experiment shown in F. Cells were analyzed in a blind fashion (n=3 mice per genotype; number of cells in total: WT Basal, 449; KO Basal, 303; WT HBSS, 146; KO HBSS, 161). Data information: , data are presented as histograms showing the mean ± SEM. *, P≤0.05; **, P≤0.01; ***, P≤0.001 (One-way ANOVA, Tukey's multiple comparisons test). H Western blot of primary WT and KO hepatocytes stained with indicated antibodies. Asterisks indicates unspecific signal. Pan-actin was used as loading control.I Quantification of western blot (n=3 per genotype per condition). Data information: data are presented as histograms showing the mean ± SEM. *, P≤0.05; **, P≤0.01; ***, P≤0.001 (One-way ANOVA, Tukey's multiple comparisons test). J mRNA levels of G3bp1 in primary hepatocytes grown under indicated conditions. (n=4 per genotype per condition). Data information data are presented as histograms showing the mean ± SEM. *, P≤0.05; **, P≤0.01; ***, P≤0.001 (One-way ANOVA, Tukey's multiple comparisons test).
Figure 5A, B Volcano plots showing significantly changed proteins in KO hepatocytes relative to WT in basal (A) and HBSS (B) conditions.F Correlation of protein fold changes in KO in respect to WT hepatocytes under basal condition and upon HBSS (2 h). Only genes previously found in CLUH RIP experiments in HeLa cells (Gao et al., 2014) are plotted. Inset shows magnification of upper part of the graph.