EMBO/SourceData huggingface dataset:
Figure 5Scatter plots representing the association of CSF PGRN with temporo-parietal FDG-PET uptake within the subjects of the Alzheimer's continuum group (n = 474). Abbreviations: FDG-PET: Fludeoxyglucose positron emission tomographyScatter plots representing the association of CSF PGRN with total hippocampal volume (B) within the subjects of the Alzheimer's continuum group (n = 474).
Figure 3 (A) Confocal microscopy images of ECs silenced with a control siRNA (siCTL) or one targeting STIM1 (siSTIM1) and stained for endogenous Rab5 (in green) and EEA-1 (in red) to visualize EEs and DAPI (in blue) to highlight the nucleus. The yellow line is drawn to define cell periphery. Scale bar = 20 μm. On the right, inset panels to highlight respective perinuclear and peripheral area of the cell. Scale bar = 5 μm.  (B) Average size, normalized on cell size, of EEA-1+ endosomes as in a. Results are the average ± SEM of three independent experiments for a total 4483 early endosomes in 18 siCTL cells (299 ± 33 endosomes per cell) and 2454 early endosomes in 13 siSTIM1 cells (189 ± 17 endosomes per cell) and analyzed by a two-tailed heteroscedastic Student's t-test, p≤ 0,001 ***.  (C) Average number, normalized on cell size, of EEA-1+ endosomes as in a. Results are the average ± SEM of three independent experiments for a total 4483 early endosomes in 18 siCTL cells (299 ± 33 endosomes per cell) and 2454 early endosomes in 13 siSTIM1 cells (189 ± 17 endosomes per cell) and analyzed by a two-tailed heteroscedastic Student's t-test, p≤ 0,01 **.  (D) Distribution of distance to nucleus overtime, normalized on cell size, quantified by image (data correspond to movies EV1 and EV2) segmentation (see Material and Method, Live imaging experiments) of Rab5+ endosomes, appearing for 60 seconds. Results are from three independent experiments for a total of 903 early endosomes in 18 siCTL cells (50 ± 5 endosomes per cell) and 935 early endosomes in 20 siSTIM1 cells (47 ± 9 endosomes per cell). Data are analyzed by a two-tailed heteroscedastic Student's t-test, p≤ 0,01 **.
Figure 5(A) mRNA levels of KIFC1, KIFC2 and KIFC3 in ECs. Values are normalized on GAPDH mRNA levels. Results are the average ± SD of three independent experiments and analyzed by a parametric two-tailed analysis of variance (ANOVA) with Bonferroni post hoc analysis. ANOVA p≤ 0,01; Bonferroni for KIFC1 and KIFC2 p≤ 0,01 ** and for KIFC1 and KIFC3 p≤ 0,05 *.(B) Representative Western Blot analysis of endogenous KIFC1 and STIM1 proteins (both normalized on total tubulin levels) in ECs silenced with a control siRNA (siCTL) or one targeting KIFC1 (siKIFC1) or two control siRNAs (siCTLsiCTL) or two targeting KIFC1 and STIM1 (siKIFC1siSTIM1). Results are the average ± SD of three independent experiments and analyzed by a parametric two-tailed analysis of variance (ANOVA) with Bonferroni post hoc analysis. ANOVA p≤ 0,01; Bonferroni for siCTL and siKIFC1, KIFC1 expression p≤ 0,001 ***, STIM1 expression p> 0.05 not significant (ns) and for siCTLsiCTL and siKIFC1siSTIM1, KIFC1 expression p≤ 0,01 **, STIM1 expression p≤ 0,05 *. (C) Confocal microscopy images of ECs silenced with a control siRNA (siCTL) or one targeting KIFC1 (siKIFC1) or one targeting STIM1 (siSTIM1) or two targeting both (siKIFC1siSTIM1) and stained for endogenous EEA-1 (in green) and LAMP-1 (in red) to visualize EEs and LEs, respectively, and DAPI (in blue) to highlight the nucleus. The yellow line is drawn to define cell periphery. Scale bar = 20 μm. On the right, inset panels to highlight respective perinuclear and peripheral area of the cell. Scale bar = 5 μm.  (D) Distribution of distance to nucleus, normalized on cell size, quantified by image (as in c) segmentation (see Material and Method, Confocal microscopy and early/late quantification) of EEA-1+ endosomes in siCTL and siKIFC1 ECs. Results are from three independent experiments for a total of 4091 early endosomes in 19 siCTL cells (215 ± 20 endosomes per cell) and 2275 early endosomes in 20 siKIFC1 cells (114 ± 10 endosomes per cell) and analyzed by a two-tailed heteroscedastic Student's t-test, p≤ 0,001 ***.  (E) Distribution of distance to nucleus quantified by image (as in c) segmentation (see Material and Method, Confocal microscopy and early/late quantification) of EEA-1+ endosomes. Results are from three independent experiments for a total of 4091 early endosomes in 19 siCTL cells (215 ± 20 endosomes per cell), 2275 early endosomes in 20 siKIFC1 cells (114 ± 10 endosomes per cell) and 3257 early endosomes in 18 siKIFC1/siSTIM1 cells (181 ± 14 endosomes per cell). Data are analyzed by a parametric two-tailed analysis of variance (ANOVA) with Bonferroni post hoc analysis. ANOVA p≤ 0,001; Bonferroni for siCTL and siKIFC1 ECs p≤ 0,001 *** (orange) and for siKIFC1 and siSTIM1/siKIFC1 ECs p≤ 0,001 *** (green). On the right-hand side of the plot, colored bands represent the average cell diameter, significantly changing throughout the conditions. Data are analyzed by a parametric two-tailed analysis of variance (ANOVA) with Bonferroni post hoc analysis. ANOVA p≤ 0,01; Bonferroni for siCTL and siKIFC1 ECs p> 0.05 not significant (orange ns) and for siKIFC1 and siSTIM1/siKIFC1 ECs p≤ 0,01 ** (green).
Figure 6 (A) Confocal microscopy images of untreated (UT) or treated with Ciliobrevin D (CilioD) or AZ82 or both treatments simultaneously (CilioD + AZ82) ECs and stained for endogenous EEA-1 (in green) and LAMP-1 (in red) to visualize EEs and LEs, respectively, and Draq5 (in blue) to highlight the nucleus. The yellow line is drawn to define cell periphery. Scale bar = 20 μm. On the right, inset panels to highlight respective perinuclear and peripheral area of the cell. Scale bar = 5 μm.  (B) Distribution of distance to nucleus overtime, normalized on cell size, quantified by image (data correspond to movies EV3 and EV5) segmentation (see Material and Method, Live imaging experiments) of Rab5+ endosomes, appearing for 30 seconds, during AZ82 treatment in ECs, compared to untreated cells (UT). Results are from two independent experiments for a total of 853 early endosomes in 6 untreated cells (142 ± 22 endosomes per cell) and 355 early endosomes in 7 AZ82 cells (51±12 endosomes per cell). Data are analyzed by a two-tailed heteroscedastic Student's t-test, p≤ 0,001 ***.  (C) Distribution of retrograde velocity overtime, quantified by image (data correspond to movies EV3, EV4 and EV5) segmentation (see Material and Method, Live imaging experiments) of Rab5+ endosomes, appearing for 30 seconds, during Ciliobrevin D (CilioD D) or AZ82 treatment in ECs, compared to untreated cells (UT). Results are from three independent experiments for a total of 580 EEs in 6 UT cells (97 ± 18 endosomes per cell), 432 EEs in 9 CilioD cells (48 ± 15 endosomes per cell) and from two independent experiments for a total of 223 EEs in 7 AZ82 cells (32 ± 6 endosomes per cell). Data are analyzed by a parametric two-tailed analysis of variance (ANOVA) with Bonferroni post hoc analysis. ANOVA p≤ 0,001; Bonferroni for UT and CilioD treated ECs p≤ 0,01 ** and for UT and AZ82 treated ECs p≤ 0,001 ***.  (D) Distribution of distance to nucleus overtime, normalized on cell size, quantified by image (data correspond to movies EV3, EV5 and EV6) segmentation (see Material and Method, Live imaging experiments) of Rab5+ endosomes, appearing for 30 seconds, during AZ82 treatment (as in b), alone or in combination with CilioD treatment (CilioD + AZ82), compared to untreated EC cells (UT). Results are from two independent experiments for a total of 853 early endosomes in 6 UT cells (142 ±22 endosomes per cell), 355 EEs in 7 AZ82 cells (51 ± 12 endosomes per cell) and 1106 EEs in 8 CilioD+AZ82 cells (136 ± 42 endosomes per cell) and analyzed by a parametric two-tailed analysis of variance (ANOVA) with Bonferroni post hoc analysis. ANOVA p≤ 0,001; Bonferroni for UT and AZ82 treated ECs p≤ 0,001 *** (orange) and for CilioD and CilioD + AZ82 treated ECs p≤ 0,001 *** (green).
Figure 8 (A) Confocal microscopy images of ECs silenced with a control shRNA (shCTL) or one targeting STIM1 (shSTIM1), to which the pH-sensitive dye pHrodo Green was given and then cells were stained for LAMP-1 (in red) to visualize LEs and DAPI (in blue) to highlight the nucleus. Scale bar = 20 μm. (B) Relative amount of LAMP-1+ LEs positive to the pH-sensitive dye pHrodo (as in a) in shCTL and shSTIM1 ECs. Results are the average ± SEM of three independent experiments for a total of 90 cells (30 cell for experiment) and analyzed by a two-tailed heteroscedastic Student's t-test, p≤ 0,001 ***.  (C) Representative Western Blot analysis of endogenous Raptor, total and phospho-Thr389 S6K1 proteins (normalized on total tubulin levels) in ECs silenced with a control shRNA (shCTL) or one targeting STIM1 (siSTIM1). Numbers above each band represent respective N.O.D. average (two biological replicates) quantification. (D) Representative Western Blot analysis of endogenous LC3-I and -II proteins (both normalized on total tubulin levels and represented as ratio LC3-II/LC3-I) in ECs silenced with a control shRNA (shCTL) or one targeting STIM1 (siSTIM1). Results are the average ± SD of three independent experiments and analyzed by a two-tailed heteroscedastic Student's t-test, p≤ 0,01 **.
figf1a, Autophagosome formation in the heart indicated by GFP-LC3. Hearts were isolated from GFP-LC3 transgenic mice at multiple stages, including 18.5 day embryos and 0.5 h, 3 h, 6 h, 24 h and 2.5 day neonates, immediately fixed, cryosectioned, and analysed by fluorescence microscopy. Scale bar, 10 µm.b, Quantification of GFP-LC3 dots in neonatal tissues. Cryosections were prepared from tissues isolated at the indicated times. The ratio of the total area of GFP-LC3 dots to the total cellular area is shown as a percentage. Values represent mean ± s.d. of three mice. Diaph., diaphragm; Panc., pancreas; Muscle; gastrocnemius muscle.c, Electron microscopic analysis of the heart from wild-type neonates. Typical autophagosomes (arrows) and autolysosomes (arrowhead) were observed in the heart at 10 h after birth. Scale bar, 1 µm.d, Conversion of LC3-I to LC3-II in neonatal hearts. Heart homogenates from five embryos/neonates were pooled and analysed by immunoblotting using an anti-LC3 antibody. The bands representing LC3-I and LC3-II are marked with arrows.
figf2a, Detection of wild-type (WT) and targeted alleles. Genomic DNA was prepared from mouse tails and analysed by Southern blot analysis. Restriction enzymes used were HpaI for the 5′ probe and SpeI for the 3′ probe (see Supplementary Fig.S2 for the restriction map). KO, knockout (targeted) allele.b, Photograph of a representative Atg5-/- neonate compared to a wild-type littermate.c, Immunoblot analysis of Atg5 and LC3. Heart homogenates were prepared from neonates 10 h after birth. MEFs were cultured in Dulbeccos modified Eagles medium supplemented with 10% FBS (unstarved) or Hanks' solution for 2 h (starved), and total cell lysates were prepared. Immunoblot analysis was performed using anti-Atg5 and anti-LC3 antibodies. The position of the Atg12-Atg5 conjugate on the blot is indicated.d, Absence of GFP-LC3 dot formation in Atg5-/- mouse heart. Various tissues from Atg5-/- mice expressing GFP-LC3 were analysed for dot formation by fluorescence microscopy. A representative result from a neonatal heart at 3 h after birth is shown.
figf3Neonates were obtained by caesarean delivery. a, b, Successfully resuscitated pups were monitored in a humidified chamber without milk feeding (a) or with artificial milk feeding provided every 3-6 h through a tube inserted into the stomach (b).
figf4a, Plasma and tissue amino acid concentrations. Amino acid concentrations were measured at 0 and 10 h after the caesarean delivery under fasting conditions. 'Total' indicates the sum of the Asp, Thr, Ser, Asn, Glu, Gln, Pro, Gly, Ala, Val, Cys, Met, Ile, Leu, Tyr, Phe, Lys, His and Arg concentrations; 'Essential' indicates the sum of Thr, Val, Met, Ile, Leu, Phe, Lys, His and Arg concentrations; 'BCAA' indicates the sum of the Val, Ile and Leu concentrations. Tissue amino acid concentrations are expressed as mmol kg-1 of wet weight. Bars represent mean ± s.d. of three mice. Single and double asterisks indicate a significant difference between mutant and control (wild-type plus heterozygous) mice at P 0.05 and P 0.01, respectively.b, Activation of AMPK in Atg5-/- mice. Hearts were isolated from unfed neonates at 0 h (lanes 1, 3, 5) and 10 h (lanes 2, 4, 6), and force-fed mice at 10 h (lane 7) after the caesarean delivery. Homogenates were prepared in the presence of phosphatase inhibitors and analysed by immunoblotting using anti-AMPK and anti-phospho-AMPK antibodies.c, ECGs from neonatal mice at the indicated time after caesarean delivery. ST elevation was observed in all Atg5-/- mice (n = 4) at 8-9 h after delivery.
Figure 1B, Mouse embryonic fibroblasts genetically modified using CRISPR to introduce a GFP sequence immediately after the start codon of Syne2 display fluorescence at the nuclear envelope.C, Brightfield and fluorescence images of a cell migrating through a 2 µm constriction. Arrows indicate areas of accumulation of nesprin-2 at the front of the nucleus as it is deformed through the constriction.E, Brightfield and fluorescence images of a cell migrating along a 15 µm control channel.F, Quantification of the intensity of the fluorescent signal around the perimeter of the nucleus in a 2 µm constriction and a 15 µm control channel. The average intensity at the front and the back is normalized to the intensity at the sides, demonstrating an increase in the signal at the front of the nucleus as it is deformed and a reduction after deformation. Error bars correspond to the standard deviation. Constriction: n=17 cells over 4 biological replicates, 15 µm channels: n=20 cells over 3 biological replicates. A Wilcoxon signed-rank test is used to compare matched samples, stars (*P < 0.05, **P < 0.01) denote comparisons to the measurement at the side, and pounds (#P < 0.05, ##P < 0.01) denote a comparison to the "before" time point.G, GFP-nesprin-2 cells deformed by the pressure gradient in a micropipette aspiration device. Note that the GFP signal does not increase at the tip but increases at sides of the nucleus.
Figure 3A, The deformed nucleus of cells migrating through narrow constrictions was bleached at the front and the side to determine mobility. Inset are shown close-up views of the bleached areas at the front of the nucleus. B, Quantification of the recovery. Error bars correspond to the standard error of the mean, n=24 over 3 biological replicates.
Figure 4A, Expression of the artificial mini-nesprin-2G construct results in significant nesprin accumulation (orange arrow) in cells migrating through narrow constrictions.C, Quantification of the mini-nesprin-2G accumulation of cells migrating through narrow constrictions. Note that the mutant construct does not accumulate at the front of the nucleus. Error bars correspond to the standard deviation. Mini-nesprin-2G: n=10 cells over 4 biological replicates; Mutant: n=11 cells over 4 biological replicates. A Wilcoxon signed-rank test is used to compare matched samples, stars(*P< 0.05, **P < 0.01) denote comparisons to the measurement at the side, and pounds (#P < 0.05, ##P < 0.01) denote a comparison to the "before" time point.
Figure 5A, Fixed cells labelled with phalloidin shows filamentous actin accumulation on the edges of the pillars and along the top and bottom surfaces. Cross-sections along the direction of migration (yellow) and perpendicular to the direction of migration (blue, 1-4) are shown below.B, A confocal slice on the surface of the nucleus indicates that GFP-nesprin-2 co-localizes with actin cables at the surface of the nucleus. Dashed white lines represent the outlines of the constriction.C, Spinning disk confocal microscopy on live cells reveals the elongation state of nesprins at the nuclear envelope. Dashed white lines represent the outlines of the constriction. The distance between mCh-LAC and GFP-nesprin-2 was measured at the back, at the constriction, at the front near the constriction, and at the center of the front. (N = 17 cells, over 3 biological replicates. The alignment of the two channels was corrected using at least 28 fluorescent beads.)D, Two-photon laser ablation reveals that ablation at the front of the nucleus results in a rearward movement of the nucleus, but not ablation at the back. The nuclei of DN-KASH, which show a decrease of endogenous nesprin at the nuclear envelope show a dampened rearward movement upon ablation at the front of nuclei. Bars represent the average value. Error bars represent the standard error on the mean. Back: N= 9, Front: N= 30, Cell Front: N = 16, and DNKASH: N=31, 3 biological replicates.
Figure 1(A) BMDMs from WT (Pml+/+) and Pml-/- mice were pre-treated with zVAD (20 μM), Nec-1 (40 μM) or GSK872 (10 μM), as indicated, for 30 min followed by co-treatment with AT-406 (1 μM). Cell viability was evaluated by ATP release after 18 h. Data show mean ± SD of four biological replicates. (B) WT and Pml-/- BMDM were treated with TNF (100 ng/ml), zVAD (20 μM) and Nec-1 (40 μM) or GSK872 (10 μM), as indicated, for 16 h. Cell viability was determined by ATP release. Data show mean ± SD of three biological replicates. (D) WT and Pml-/- immortalized MEFs were treated with TNF (100 ng/ml), zVAD (20 μM), Nec-1 (40 μM), and GSK872 (10 μM), as indicated, for 8 h. Cell viability was determined by ATP assay. Data show mean ± SD of three biological replicates. (E) WT and Pml-/- immortalized MEFs were treated with TNF (100 ng/ml),IKK inhibitor BMS-345541 (10 mM) and Nec-1, as indicated, for 6 h and then cell death was assayed. Data show mean ± SD of five biological replicates, except the Nec-1-containing experiment (n=2).
Figure 2(A, B) Pml+/+ and Pml-/- BMDMs were treated with zVAD + AT406 (zA) (A) or TNF + zVAD (Tz) (B), as in Fig. 1, for the indicated times. Contents of RIPK1, p-RIPK1[S166], RIPK3, p-RIPK3, MLKL, and p-MLKL in cell lysates was analysed by immunoblots. Bottom panels, quantitation of p-RIPK1[S166] from three biological replicates using normalized intensity of p-RIPK1[S166] in WT cells at 4 h as 1. Data show mean ± SD.(D) BMDMs were treated with zVAD (20 μM) +AT-406 (1 μM) for 18 h, and TNF generated was then analyzed by ELISA. Data show mean ± SD of four biological replicates. (E) BMDMs were treated with zVAD + AT-406 (1 μM), with or without anti-TNF for 18 h, and cell viability quantitated. Data show mean ± SD of three biological replicates.
Figure 4(A, B) WT (Pml+/+) and Pml-/- mice (n = 12 in each group) were injected with mouse TNF (1.5 μg/g body weight), and rectal body temperature (A) and survival (B) were determined at the indicated time-points. #, the temperature of only six mice was measured at the indicated time-points. Mean ± S.E.M is shown. *P < 0.05 as determined by two-way ANOVA (A), or by Log-rank (Mantel-Cox) test (B).
Figure 6(A, B) WT and Mk2-/- BMDMs were treated with TNF (100 ng/ml) + zVAD (20 μM) (A) or with zVAD (20 μM) + AT-406 (1 μM) (B), and then the contents of p-RIPK1[S321], RIPK1, p-p38, p38 was determined at the indicated time-points.(C) WT, Pml-/-, Mk2-/- and Pml-/-Mk2 -/- BMDMs were treated with zVAD (20 μM), AT-406 (1 μM), Nec-1 (40 μM) and GSK872 (10 μM), as indicated, for 18 h. Cell viability was determined by ATP release. Data show mean ± SD of three biological replicates. *P < 0.05 for multiple t-tests according to the Holm-Sidak method. (D) WT, Pml-/-, Mk2-/- and Pml-/-Mk2 -/- BMDMs were treated with TNF (100 ng/ml), zVAD (20 μM), Nec-1 (40 μM) and GSK872 (10 μM), as indicated, for 16 h. Cell viability was determined by ATP release. Data show mean ± SD of three biological replicates. *P < 0.05 for multiple t-tests according to the Holm-Sidak method. (F) WT, Pml-/-, Mk2-/- and Pml-/-Mk2 -/- mice were injected i.v. with TNF (1.5 mg/kg), and survival was monitored for 24 h. Data represent a combination of two independent experiments (n=10). *P < 0.05 for Log-rank (Mantel-Cox) test.
Figure 7(D) WT and Pml-/- BMDMs were treated with TNF (100 ng/ml) + zVAD (20 μM) for the indicated times. p38 MAPK was immunoprecipitated, and its association with MK2 was then analysed.(E) Recombinant Flag-PML-I, GST-MK2 (60 ng) and His-p38 (60 ng) were incubated, as indicated, at 4 °C for 2 h. p38 was pulled down by anti-p38 and then PML, MK2 and p38 contents in the precipitate and reaction mixture (input) were detected by immunoblotting.(F) Recombinant Flag-PML-I, GST-MK2 (100 ng) and His-p38 (200 ng) were incubated, as indicated, at 30 °C in in vitro kinase assay buffer (20 mM HEPES, 10 mM MgCl2, 100 nM ATP, 1 mM DTT) for 20 min. The levels of p-MK2, MK2, p38, and PML (FLAG) in the reaction mixture were then determined.
Figure 1(A) mH2A1.2 and different neurogenesis markers are present in cortical lysates collected at various time points (E13, E15, E17, and P0).(C) A scatter diagram shows the change trend of mH2A1.2 and different neurogenesis markers. n = 5 mice, independent replicates.(E) Electroporation of mH2A1.2-shRNA results in abnormal cell distribution in the developing neocortex. Electroporation was performed at E13.5, and the mouse was harvested at E16.5. Scale bar represents 50 μm. (F) Graph shows the percentage of GFP-positive cells distributed in the VZ/SVZ, IZ and CP. n = 7 mice, independent replicates. Date information: Representative images from at least three independent experiments. Error bars represent the means ± S.E.M.; Two-tailed unpaired t-test, P < 0.01(**) or P < 0.001(***). n.s., not significant.
Figure 2(D)Abnormal cell distribution was observed in the mH2A1.2 silenced neocortex. The GFP plasmid was electroporated into WT and KO mice brains at E13.5, and the mice were sacrificed at E16.5. Scale bar represents 50 μm. (E) Graphs of the percentage of GFP-positive cells in the VZ/SVZ, IZ and CP. n = 5 mice, independent replicates. Date information: Representative images from at least three independent experiments. Error bars represent the means ± S.E.M.; Two-tailed unpaired t-test, P < 0.05(*), P < 0.01(**) or P < 0.001(***). n.s., not significant.(F) Brain sections of WT and KO mice at E16.5 were immunostained with the mitotic marker pH3 and DAPI. Scale bar represents 20 μm. (G) Statistics of pH3+ cells of the cortex. n=6 mice, independent replicates. Date information: Representative images from at least three independent experiments. Error bars represent the means ± S.E.M.; Two-tailed unpaired t-test, P < 0.05(*), P < 0.01(**) or P < 0.001(***). n.s., not significant.(H) Representative images of E16.5 coronal brain sections were immunostained for PAX6. The GFP plasmid was electroporated into WT and KO mice brains at E13.5, and the mice were sacrificed at E16.5. Scale bar represents 50 μm. (I) Quantification of GFP and Pax6 double positive cells in the VZ/SVZ. n=6 mice, independent replicates. Date information: Representative images from at least three independent experiments. Error bars represent the means ± S.E.M.; Two-tailed unpaired t-test, P < 0.05(*), P < 0.01(**) or P < 0.001(***). n.s., not significant.