EMBO/soda-nel huggingface dataset:
A unifying structural and functional model of the coronavirus replication organelle: tracking down RNA synthesis (2020)
Fig. 6.

IEM detection of viral markers in MERS-CoV-infected cells.(A-G) Immunogold labeling of thawed cryo-sections of MERS-CoV-infected Huh7 cells (12 hpi) for the detection of the indicated viral proteins. (A-C) Structural proteins were detected on virions (black arrowheads) and, for the M and S proteins, also on Golgi cisterna. While regions containing DMS (white arrowheads) and CM labelled for the N protein (D) and nsp3 (G), the M and S protein were not detected in these areas. (H-I) Immunogold labeling of dsRNA in HPF-FS samples of MERS-CoV-infected Huh7 cells (13 hpi). The label accumulated on DMVs, which could be easily detected in this type of samples (grey arrowheads), while the regions with CM and DMSs, which appeared as dark areas among the DMV clusters, where devoid of dsRNA signal. G, Golgi complex; m, mitochondria. Scale bars, 250 nm.
Mouse fetal intestinal organoids: new model to study epithelial maturation from suckling to weaning (2018)
Figure 2

Figure 2 - Small intestinal fetal organoids recapitulate suckling-to-weaning transition in vitro.

A-G Real-time qPCR analysis of fetal organoids cultured for one month showing decrease in relative expression of indicated neonatal markers A Ass1, B Blimp-1, C FcRn and D Lct and increase of the adult markers E Sis, F Treh and G Arg2 (n=3 individual wells from single organoid culture (see material and methods); experiment was repeated in four to eight independent organoid cultures with similar results). H-L. Enzyme activity assay of fetal organoids for H Lactase, I sucrase, J maltase, K trehalase and L arginase. Activity is given in µM glucose/µg protein·min-1 (experiment was generated from single organoid culture (see material and methods) and repeated in 3 independent organoid cultures with similar results).

Data information: Data are presented as mean ± SEM. ND not detected, *p<0.05, **p<0.01, ***p<0.001, NS not significant, relative to expression or activity level at day 3 (one-way ANOVA).
Mouse fetal intestinal organoids: new model to study epithelial maturation from suckling to weaning (2018)
Figure 3

Figure 3 - Fetal organoids resemble adult organoids after one month in culture.

A-G Relative expression detected by Real-time qPCR in fetal organoids ( ) and adult organoids ( ). Neonatal markers A Ass1, B Blimp-1, C FcRn and D Lct in fetal organoids cultured for one month compare to levels adult organoids. Mature markers E Sis, F Treh and G Arg2 increase in fetal organoids to adult levels (n=3 individual wells from single organoid culture (see material and methods); experiment was repeated in four independent organoid cultures with similar results). H-L Enzyme activity assay of fetal ( ) and adult ( ) organoids. H Lactase activity is higher in fetal organoids decreasing to adult levels at day 28, while I sucrase, J maltase, K trehalase and L arginase increase to adult levels. Activity is given in µM glucose/µg protein·min-1 (n=3 independent organoid cultures).

Data information: Data are presented as mean ± SEM. ND not detected, *p<0.05, **p<0.01, ***p<0.001, NS not significant, in A-G between fetal and adult organoids and in H-L relative to adult levels (t-test).
Mouse fetal intestinal organoids: new model to study epithelial maturation from suckling to weaning (2018)
Figure 4

Figure 4 - Dexamethasone accelerates maturation of fetal organoids.

A, B, E, F Maturation is accelerated in dexamethasone treated fetal organoids ( ) compared to control ( ), as revealed by real-time qPCR. Decrease in relative expression of neonatal marker A Blimp-1 and increase in expression of adult marker B Sis occur earlier in dexamethasone treated organoids, but expression of adult marker E Treh and F Arg2 remains unchanged (n=3 individual wells from single organoid culture (see material and methods); experiment was repeated in four independent organoid cultures with similar results).

C,D,G,H Dexamethasone treatment accelerates increase in activity of E sucrase, F maltase, G trehalase and H arginase reaching adult organoid level ( ) at day 13 of the culture. Activity is given in µM glucose/µg protein·min-1 (n = 3 independent organoid cultures).

Data information: Data are presented as mean ± SEM. ND not detected, *p<0.05, ***p<0.001, NS not significant, between control and dexamethasone treated organoids (two-way ANOVA). Expression values of control fetal organoids and control adult organoids in B, E and F are the same as Figure 3E-G and enzyme activity levels of fetal organoids in C, D, G and H are the same as 3I-L.
Mouse fetal intestinal organoids: new model to study epithelial maturation from suckling to weaning (2018)
Figure 5

Figure 5 - Spheroids and organoids show the same protein expression pattern, independently of culture stage/passage.

A Microscopic images of fetal organoids at day 3, 13, 20 and 30 of culture. Scale bars: 500 µm.

B Percentage of fetal spheroids decreases during culture (n=3 individual wells from single organoid culture (see material and methods); experiment was repeated in ten independent organoid cultures with similar results).

C-E Immmunohistochemistry of fetal organoids for C Ass1 D Sis and E Arg2. Quantification of 3 slides per staining, 7 to 10 organoids / spheroids per slide. Scale bars: 50µm.

Data information: In B, data are presented as mean ± SEM. ***p<0.001, relative to number of spheroids at day 3 (one-way ANOVA).

Expanded View Figure Legends
Carbonic anhydrase 7 bundles filamentous actin and regulates dendritic spine morphology and density (2021)
Figure 1

Figure 1. Subcellular localization of CA7 and CA2 in fibroblasts.

(A) NIH3T3 fibroblasts co-expressing DsRed-CA7 and EGFP-CA2 (n = 4 independent replicates).

(B-E) Co-localization of EGFP and the two CA isoforms with filamentous actin studied in fibroblasts expressing (B) EGFP, (C) EGFP-CA2, or (D, E) EGFP-CA7 and stained with phalloidin-594 to visualize F-actin (n = 4, 10 and 8 independent replicates, respectively). A magnification of the area marked with the yellow rectangle in (C) and (D) shows the localization of EGFP-CA2 and EGFP-CA7 compared to phalloidin-594. (E) EGFP-CA7 caused a prominent overexpression phenotype with thick and curvy cytosolic actin bundles (arrow) and plasmalemmal protrusions (arrowhead).

(F-H) The normalized fluorescence emission intensity profiles for F-actin (red line) and (F) EGFP, (G) EGFP-CA2, or (H) EGFP-CA7 (black line).

Data information: For the plots, pixel intensities were measured through the cross-section of the cell indicated by the yellow line in panels B-D. Scale bar in (A-E) 20 µm.
Carbonic anhydrase 7 bundles filamentous actin and regulates dendritic spine morphology and density (2021)
Figure 2

Figure 2. CA7 binds to filamentous actin and increases actin bundling.

(A) Actin co-sedimentation assay shows that CA7 binds to F-actin. The binding is enhanced at more acidic pH (6.5 vs. 7.4) n = 3 independent replicates at each actin concentration, two-way ANOVA, P < 0.001.

(B) Fluorescence time‐lapse images of F-actin bundling in an in vitro bundling assay. A mixture of unlabeled and Rhodamine labelled non-muscle actin was polymerized in the absence (PBS control, upper panel) or presence of mCA7 (lower panel). Numbers in images indicate the time after the onset of the experiment (0, 5 and 23 min). Intensity based Fire-coloring (Fiji) was used to visualize intensity changes. Scale bar 10 µm.

(C) Quantification of the mean increase in filament length (n = 10 filaments at each time point) and the mean relative fluorescence intensity values of cross-sections for individual filaments /bundles (n = 30 - 31) in the absence and presence of mCA7 (1.12 µM). The data were analyzed using a general mixed model with time as a within-unit factor and the presence of CA7 as a between-unit factor. n = 3 independent repetitions, experiment repeats were included as a covariate and were non-significant.

(D) Kymographs showing different time points in the line of interest (line width 1 µm) from the experiments analyzed in (C). Kymographs were generated with Fiji Multi Kymograph function. Total time is 159 frames = 26.5 minutes. Scale bar 5 μm (full height is 20 μm). F-actin bundles can be detected as clear lines in kymographs.

(E) Fluorescence time‐lapse images of F-actin bundling in an in vitro bundling assay. A mixture of unlabeled and Rhodamine labelled non-muscle actin was polymerized in the presence of mCA7 (0.11 µM). Numbers above images indicate the time after the onset of the experiment (22 min -23 min 20 sec). Intensity based Fire-coloring (Fiji) was used to visualize intensity changes. White arrows highlight the bundling filaments. Scale bar 5 μm. This is a representative video from 8 similar experiments.

Data information: Data are presented as mean ± SEM in (A) and mean ± SD in (C).
Carbonic anhydrase 7 bundles filamentous actin and regulates dendritic spine morphology and density (2021)
Figure 3

Figure 3. CA7 overexpressing NIH3T3 are resistant to latrunculin B treatment.

(A,B) NIH3T3 cells transfected with DsRed (A) or DsRed-CA7 (B) were incubated in growth medium with 5 µM Latrunculin B for 0, 2, 5, 10, or 30 minutes, or in an equal amount of DMSO for 60 minutes. Analyses of experiments show that in cells transfected with DsRed-CA7 F-actin structures collapse more slowly (0 min: 83% "normal"; 2 min: 80%, p = 0.44; 5 min: 74%, p = 0.39; 10 min: 27%, p = 0.08; 30 min: 16%, p = 0.02; DMSO: 82%, p = 0.99; tested against 0 min with two-way ANOVA, Dunnett's multiple comparison test) than in the DsRed-transfected ones (0 min: 89% "normal"; 2 min: 48%, p = 0.14; 5 min: 31%, p = 0.04; 10 min: 2%, p = 0.001; 30 min: 0.7%, p = 0.001; DMSO: 88%, p = 0.8; tested against 0 min with two-way ANOVA, Dunnett's multiple comparison test) . For the analysis, cells were categorized to three groups as "normal", "some shape/F-actin left" and "round". The upper panel shows example images of the cells in all three categories for (A) DsRed- or (B) DsRed-CA7 transfected cells (actin visualized with Phalloidin-488).

Data information: A hundred cells per each time point from each experiment (n = 3) were counted and categorized. Scale bar 50 µm. Data are presented as mean ± SEM.
Carbonic anhydrase 7 bundles filamentous actin and regulates dendritic spine morphology and density (2021)
Figure 5

Figure 5. Subcellular localization of the chimeric CA7 constructs in fibroblasts.

(A-C) NIH3T3 fibroblasts expressing EGFP-CA7-mutant1 (A), EGFP-CA7-mutant2 (B), and EGFP-CA7-mutant3 (C). F-actin is visualized with Phalloidin-594. In the right-most panel of (A-C) are the normalized fluorescence intensity profiles of the mutated CA7 EGFP signal (black) and actin (red) and the yellow line in left-most panels indicates the cross-section from which the pixel intensities were measured. Scale bars 20 µm.

(D) Analysis of the mutated CA7 and F-actin co-localization in cultured fibroblasts. Scatterplots of fluorescent intensities per pixel (EGFP vs. Phalloidin-594) along a cross section through a representative cell. Pearson's correlation coefficient (r) for the analyzed cell is given in each panel.

(E) Pearson's correlation coefficient values calculated for the depicted constructs and compared to CA7. F-actin had a strong positive correlation coefficient with EGFP-CA7 (r = 0.91 ± 0.02, n = 26 cells). Neither EGFP alone (r = 0.01 ± 0.03, n = 56) nor EGFP-CA2 (r = 0.09 ± 0.03, n = 53) co-localized with F-actin (P < 0.0001 for both constructs, when compared to CA7). From the five mutated CA7 constructs, EGFP-CA7-mutant1 (r= 0.51 ± 0.04, P < 0.0001, n = 25) and EGFP-CA7-mutant3 (r = 0.72 ± 0.03, P = 0.05, n = 21) co-localized less with F-actin actin when compared to CA7. The co-localization of the other four mutated CA7 constructs, EGFP-CA7-mutant2 (r = 0.92 ± 0.02, P = 0.99, n = 18), EGFP-CA7-R223E (r = 0.86 ± 0.02, P = 0.99, n = 24) and EGFP-CA7-H96/98C (r = 0.79 ± 0.04, P = 0.14, n = 18) did not differ significantly from that of CA7. Data are shown as mean ± SEM. Data did not pass Shapiro-Wilk test for normality, statistical comparison against CA7 was done with Kruskall-Wallis test corrected for multiple comparisons.
Carbonic anhydrase 7 bundles filamentous actin and regulates dendritic spine morphology and density (2021)
Figure 6

Figure 6. Localization of the overexpressed CA2 and CA7 in neurons.

(A) Isoform-specific subcellular localization shown in cultured hippocampal neurons (DIV14) co-expressing DsRed-CA7 (left) and EGFP-CA2 (middle).

(B,C) Representative confocal images of precocious in vivo expression of (B) EGFP-CA2 and (C) EGFP-CA7 in P40 mouse cortical layer 2/3 pyramidal neurons. Neurons were transfected at E14.5 with EGFP-CA2 or EGFP-CA7 using in utero electroporation and images were taken from fixed slices. Right panels in (B) and (C) show higher magnification of the primary apical dendrite marked with a box.

(D) The expression of EGFP-CA7 disrupted the normal spine morphology and induced the formation of thick, filopodia-like protrusions.

Data information: n = 5 independent repeats for cultured neurons and two animals/construct in vivo. Scale bar in (A) 5 µm; (B and C): 5 µm, insets in (B, C) and panel D: 25 µm.
Carbonic anhydrase 7 bundles filamentous actin and regulates dendritic spine morphology and density (2021)
Figure 7

Figure 7. Layer 2/3 cortical pyramidal neurons in CA7 KO mice have high dendritic spine density and smaller spines but mEPSC frequency and amplitude are not affected

(A) Comparison of mEPSCs in cortical layer 2/3 pyramidal neurons from P30 - P40 WT and CA7 KO mice. Sample traces of mEPSC recordings from WT and CA7 KO neurons, low-pas filtered at 1 kHz (left). The data are summarized in the bar diagrams (right). mEPSC frequency (P = 0.63) and amplitude (P = 0.90) were not significantly different between WT and CA7 KO and neurons (n = 7 and 5 neurons, respectively, Student's independent samples t-test).

(B) Representative confocal images of apical dendrites from Lucifer Yellow injected cortical layer 2/3 pyramidal neurons from WT and CA7 KO mice. The dendritic spine density and spine head size were examined in fixed slice preparations from P34 - P37 mice. Scale bar 2 µm.

(C) Summary of the spine density analysis done from the Lucifer Yellow injected neurons. Spine density was a higher in CA7 KO neurons both in apical and basal dendrites (n = 28 neurons for both) compared to WT (n= 29 neurons for apical and n=30 for basal dendrite analysis) (P = 0.000002 for apical dendrites, analyzed with Mann-Whitney test, and P = 6,8 x 10-8 for basal dendrites, Student's t-test with Welch-correction.) A total of 8279 spines were analyzed from four CA7 KO mice and 8730 spines from two WT control mice.

(D) The spine head width distribution7differed significantly between the genotypes (n= 467 spines from WT and n = 421 spines from CA7 KO animals, 15 neurons analyzed from both genotypes, Wilcoxon rank sum test with continuity correction, W = 134540, P < 0.001).

Data information: Data in (A) and (C) are given as mean + SEM.

Expanded View Figure Legends
Chemical modulation of chaperone-mediated autophagy by retinoic acid derivatives (2013)
figf1

(a) Knockdown of RARα in NIH3T3 mouse fibroblasts was conducted using two different shRNAs, sh1 and sh2, compared to control (Ctr). Left, representative immunoblot. Actin is shown as loading control and full-length blots are shown in Supplementary Figure 21. Right, amounts of RARα in control and knockdown cells determined by densitometric quantification of immunoblots represented by the one shown on the left. Values are normalized for actin and expressed as multiples of control (None) values; n = 3. (b) Rates of degradation of long-lived proteins in control and RARα(−) cells maintained in the presence or absence of serum for 12 h. Values are expressed as percentage of proteolysis; n = 3. (c,d) Percentage of degradation due to lysosomes (c) and macroautophagy (d) in cells assayed as in b but treated with inhibitors of lysosomal proteolysis (c) or with 3-methyladenine (3MA) to block macroautophagy (d). Values are expressed as percentage of total protein degradation sensitive to the lysosomal inhibitors; n = 3. In all panels, all values are mean ± s.e.m., and differences with control are significant for *P 0.05.
Chemical modulation of chaperone-mediated autophagy by retinoic acid derivatives (2013)
figf2

(a) Immunoblot for LC3-II in control mouse fibroblasts (Ctr) or those knocked down for RARα (RARα(−)) maintained in the presence or absence of serum for the indicated times. Where indicated, protease inhibitors (PI) against lysosomal proteolysis were added. Actin is shown as a loading control. 'I' and 'II' designate different forms of LC3, as described in the text. (b) Amounts of LC3-II determined by densitometric quantification of immunoblots. Values are expressed as fold change in value relative to serum-supplemented control cells; n = 4. (c) Ratio of the amounts of LC3-II in cells treated with protease inhibitors compared to untreated cells (None). Values are expressed as fold change in value relative to untreated cells; n = 4. (d,e) Autophagic flux in the same cells as in c expressing mCherry-GFP–LC3-II and maintained in the presence or absence of serum. Shown in d are representative merged channel images; scale bars, 2 μm. Arrows indicate autolysosomes (red). Shown in e are the quantification of the number of autophagosomes (mCherry and GFP positive) per cell (left) and percentage of autolysosomes (mCherry positive and GFP negative; right) in >50 cells in at least four different fields. AV, autophagic vacuoles. (f) Control and RARα(−) cells were transfected with the KFERQ-mCherry1 photoactivatable reporter, and after photoactivation they were maintained in medium with or without serum. Left, representative images. Graph shows quantification of the number of puncta per cell in >50 cells using the CMA reporter in at least four different fields. Nuclei are labeled with DAPI. Scale bars, 10 μm. In b, c, e and f, all values are mean ± s.e.m. Differences with control (marked with asterisk) or with serum-supplemented cells (marked with §) are significant for P 0.05. Full-field fluorescence images and full-length blots are shown in Supplementary Figures 2 and 21, respectively.
Chemical modulation of chaperone-mediated autophagy by retinoic acid derivatives (2013)
figf3

(a) Rates of degradation of long-lived proteins in mouse fibroblasts untreated (None) or treated with 40 μM ATRA and maintained in the presence or absence of serum. Values are expressed as a percentage of proteolysis; n = 3. (b) Percentage of lysosomal degradation calculated after treatment with inhibitors of lysosomal proteolysis for 12 h; n = 3. (c) Immunoblot for LC3-II of the same cells as in a and b maintained in the presence or absence of serum and protease inhibitors (PI). Top, representative immunoblot. Actin is shown as loading control. Bottom, ratio of amount of LC3-II in cells treated with PI to that in untreated cells. Values are expressed as fold change in value relative to untreated cells; n = 4. 'I' and 'II' designate different forms of LC3, as described in the text. (d,e) Autophagic flux in untreated and ATRA-treated cells expressing mCherry-GFP–LC3-II and maintained in the presence or absence of serum. Shown in d are representative merged-channel images. Arrows indicate autolysosomes (red). Scale bar, 2 μm. Shown in e are the number of autophagosomes (left) and percentage of autolysosomes (right) after quantification of >50 cells. AV, autophagic vacuoles. (f) Mouse fibroblasts expressing the KFERQ-mCherry1 photoactivatable reporter with or without ATRA and after photoactivation maintained in the presence or absence of serum. Left, representative images. Nuclei are labeled with DAPI. Scale bars, 10 μm. Graph shows quantification of the number of puncta per cell in >50 cells. All values in a–c, e and f are mean ± s.e.m., and differences with untreated (marked with asterisk) or with serum-supplemented cells (marked with §) are significant for P 0.01. Full-field fluorescence images and full-length blots are shown in Supplementary Figures 3 and 21, respectively.
Chemical modulation of chaperone-mediated autophagy by retinoic acid derivatives (2013)
figf5

(a) Mouse fibroblasts expressing the KFERQ-mCherry1 photoactivatable reporter without (None) or with 20 μM of the indicated compounds imaged 16 h after photoactivation. Insets show higher-magnification images. Nuclei are labeled with DAPI. Scale bars, 10 μm. (b) Quantification of the effect of increasing concentrations of GR1 on the same cells. Untreated cells and cells treated with 40 μM ATRA are also shown. Representative images are shown in Supplementary Figure 7. Graph shows the average number of fluorescent puncta per cell, quantified in >50 cells. All values are mean ± s.e.m. (c) Mouse fibroblasts were cotransfected with the human RARα (hRARα) receptor, a relevant reporter luciferase plasmid and the non–retinoid-regulated Renilla reporter to control for transfection. Values show relative luciferase units (RLU) detected in cells subjected to the indicated concentrations of ATRA or the three retinoid derivatives for 12 h. (d) Cells transfected as in c were treated with 100 nM of ATRA alone or in the presence of the indicated concentrations of the three retinoid derivatives or the antagonist BMS614 for 12 h. Values are shown as RLU. (e) Mouse fibroblasts were cotransfected with the human RXR receptor, a relevant reporter luciferase plasmid and the non–retinoid-regulated Renilla reporter to control for transfection. Values show relative luciferase units detected in cells subjected to the indicated concentrations of ATRA or the three retinoid derivatives for 12 h. (f) Cells transfected as in e were treated with 10 μM of ATRA alone or in the presence of the indicated concentrations of the three retinoid derivatives or the antagonist BMS614 for 12 h. Values are shown as RLU. Values in c–f are mean ± s.e.m.; n = 4–6. (g) Left, immunoblot for LC3-II in cells treated with 20 μM of the retinoid derivatives and protease inhibitors (PIs), as labeled. Actin is shown as loading control, and full-length blots are shown in Supplementary Figure 21. The amount of LC3-II in untreated cells, expressed as fold change relative to control (middle), and the increase in LC3-II after PI treatment (LC3-II flux, right), expressed as fold change, were calculated from the densitometric quantification of immunoblots. Values are mean ± s.e.m.; n = 3.
Chemical modulation of chaperone-mediated autophagy by retinoic acid derivatives (2013)
figf6

(a) Rates of degradation of long-lived proteins in control mouse fibroblasts or RARα(−) or LAMP-2A(−) (L-2A(−)) cells left untreated (None) or treated with 20 μM of the indicated compounds. Values are expressed as the fold change in proteolytic rate relative to the rate in untreated cells for each group; n = 3. (b–d) Control mouse fibroblasts or RARα(−), LAMP-2A(−) or LAMP-2B(−) (L-2B(−)) cells were transfected with the KFERQ-mCherry1 photoactivatable reporter with or without the indicated compounds (20 μM). In b are shown the representative fields and high-magnification images (insets) for GR1. Nuclei are labeled with DAPI. Representative fields for GR2 and AR7 are shown in Supplementary Figure 13. Scale bars, 10 μm. (c,d) Average number of fluorescent puncta per cell quantified in >50 cells in at least four different fields in control cells and RAR(−) (c) or LAMP-2B(−) (d) cells. No puncta were detected in LAMP-2A(−) cells. (e) Mouse fibroblasts transfected with the KFERQ-mCherry1 photoactivatable reporter with the indicated concentrations of AR7 or GR1 or with both compounds to reach the same final concentration, as indicated. Top, representative fields and high-magnification images (insets). Nuclei are labeled with DAPI. Bottom, quantification of the number of fluorescent puncta per field in each condition. Scale bars, 10 μm. In a, c, d and e, values are mean ± s.e.m.; n > 50 cells. Differences with untreated samples (marked with asterisk) or between single and combined treatments (§) are significant for P 0.01.