EMBO/soda-nel huggingface dataset:
STIM1 and ORAI1 form a novel cold transduction mechanism in sensory and sympathetic neurons (2022)
Figure 5

Figure 5: The effect of cold on ORAI1 puncta formation and colocalization of ORAI1 and STIM1 in HEK293 cells.

(A) Representative TIRF microscopy images (imaging depth 100nm) showing that cooling from 35°C to 13°C increases ORAI1 puncta formation and colocalization of ORAI1 with STIM1 in HEK293 cells transfected with ORAI1-CFP and STIM1-YFP. Cooling to 13°C causes the appearance of new ORAI1 puncta (examples shown by *) that are not present in the 35°C image and are colocalised with STIM1. Cooling also causes STIM1 to move towards the cell surface in edge-on views (arrows). To reduce cell motility, the experiment was conducted in nominal 0[Ca]e, which potentially caused partial formation of STIM1 puncta before the images shown. Scale bar = 5μm. Temperature trace shown below. Mean fluorescence intensity adjusted to compensate for increase in intrinsic fluorescence of CFP and YFP caused by cooling (see Fig. S12). (B-F), collected measurements (see Methods for details) of ORAI1 puncta number; relative area occupied by ORAI1 puncta; and colocalization of STIM1 and ORAI1 in HEK293 cells before, during, and after cooling (mean ±SEM, **p=0.0015 ****p<0.0001, RM one-way ANOVA + Dunnett's test, n=44 cells in 8 wells). Cooling significantly increases the number of ORAI1 puncta per cell (B,D) and the percentage area of the cell membrane surface covered by ORAI1 puncta (C,E). Cooling causes an apparent small decrease in number of STIM1 puncta per cell (D) and the percentage area of the cell covered by STIM1 puncta (E) though both were non-significant (p=0.22 and p=0.10 respectively). Cooling significantly increased colocalization of STIM1 and ORAI1 (F, p<0.0001, RM one-way ANOVA + Dunnett's test).
STIM1 and ORAI1 form a novel cold transduction mechanism in sensory and sympathetic neurons (2022)
Figure 6

Figure 6: Neuronal Nitric Oxide Synthase (nNOS) is widely expressed in postganglionic sympathetic neurons.

(A) Representative immunofluorescence images showing adult mouse stellate ganglion (SG) sections stained for nNOS (red), to label nitrergic neurons, βIII Tubulin (green) to label all neurons, and DAPI to label nuclei. nNOS is widely expressed in neurons of the stellate ganglion, but is absent from glial cells (glial nuclei identifiable in merged image, similar results in n=5 animals). Antibody against nNOS from Abcam; similar results obtained with antibodies from ECM and Millipore. All three antibodies show nNOS widely expressed in SG cell bodies and neurites. (B) Adult mouse SCG (n=2 animals, upper) and SG (n=5 animals, lower) sections stained for nNOS (red), tyrosine hydroxylase (TH, green) and DAPI (blue) to label nitrergic neurons, noradrenergic neurons and nuclei respectively. Many noradrenergic cells also express nNOS. Scale bars 50 μm.
Removing endogenous tau does not prevent tau propagation yet reduces its neurotoxicity (2015)
Figure 1

Figure 1. Trans-synaptic propagation of human tau in ECrTgTau mice in absence of endogenous mouse tau.

3D-brain model, horizontal brain section illustrating transgenic human P301Ltau expression in the entorhinal cortex (green, EC) of the ECrTgTau mouse lines, and the propagation of transgenic tau to the dentate gyrus (DG). Tau composition in ECrTgTau and control mouse lines investigated.

Immunostained horizontal sections show the expression of human P301Ltau in EC neurons in absence of endogenous mouse tau (ECrTgTau-Mapt0/0). Fluorescence in situ hybridization of human tau mRNA combined with immunofluorescent labeling (Immuno-FISH) of human tau protein (huTau) verifies P301Ltau transgene expression in the EC. Scale bars 50 µm.

Propagation of human tau protein to neurons in the DG (white arrows) in ECrTgTau-Mapt0/0 mice. Close-ups show DG neurons from three ECrTgTau-Mapt0/0 mice (DG I-III). Immuno-FISH proofs the absence of human tau expression in DG neurons, which have huTau protein but no human tau mRNA. Scale bars 50 µm.

Immunostained horizontal sections of ECrTgTau mice show the expression of human P301Ltau in EC neurons in presence of endogenous mouse tau. Close-ups show DG neurons from three ECrTgTau mice (DG I-III) and Immuno-FISH proofs the absence of human tau expression in these DG neurons. Scale bars 50 µm.

Human P301Ltau propagation to DG neurons (white arrows) in presence of endogenous mouse tau in ECrTgTau mice. Scale bars 50 µm.

Human (huTau, antibody Tau13) and total tau (hu+moTau, DAKO) levels in entorhinal cortex (EC) extracts from 18-month-old mice show equal human P301Ltau expression in ECrTgTau and ECrTgTau-Mapt0/0 mice (p=0.201, n=3 mice/group, one-way ANOVA with Bonferroni correction)

The number of human tau-positive cell bodies in the DG (p=0.58, n=4 sections and 3 mice/group) and human tau in hippocampal (HPC) extracts (p=0.14, n=3 mice/group) were similar in ECrTgTau-Mapt0/0 and ECrTgTau mice (two-tailed Student's T-test).
Removing endogenous tau does not prevent tau propagation yet reduces its neurotoxicity (2015)
Figure 2

Figure 2. P301Ltau propagation after viral expression in the entorhinal cortex.

Adeno-associated virus (AAV) construct designed for expression of eGFP and human P301Ltau as individual proteins, separated by the self-cleaving 2a peptide, under the CBA promotor (AAV8 CBA-eGFP-2a-huTauP301L). AAV transduced “donor neurons” express eGFP and huTauP301L, tau “recipient neurons” are identified after immunostaining for human tau as huTau+ but GFP- neurons.

Primary cortical neuron cultures that were transduced with AAV eGFP-2a-P301Ltau at 7 DIV, and fixed and immunostained for GFP and human tau (Tau13 antibody) at 14 DIV, show tau donor (GFP+, huTau+; ~10% neurons) and a small number of tau recipient neurons (GFP-, huTau+; ~1% neurons). Western blot of whole cell lysates verified efficient cleavage (~95%) of eGFP and P301Ltau by the 2a peptide (n=3).

Eight weeks after AAV injection into right EC of aged Mapt0/0 mice (=3), immunostained brain sections showed that huTauP301L (red) propagated to a few DG “recipient neurons” (white arrows). Scale bar 50 µm.

Unilateral AAV-mediated human P301L tau expression in the EC and DG of age-matched WT mice (n=3). Representative images of brain sections show donor neurons in the injected EC and DG, and a few tau recipient neurons (white arrows) adjacent to the AAV injection site. Scale bar 50 µm.

In the contralateral hemisphere of the same brain section, some tau recipient neurons (white arrows) were also present in the (non-injected) axonal projection areas in the contralateral EC (GFP-filled terminal ends). Scale bar 100 µm.
Removing endogenous tau does not prevent tau propagation yet reduces its neurotoxicity (2015)
Figure 3

Figure 3. Tau phosphorylation, misfolding and gliosis in ECrTgTau(-Mapt0/0) mice.

A. Brain sections from 18-month-old ECrTgTau-Mapt0/0 and ECrTgTau mice were co-immuolabeled for human tau and misfolded tau (Alz50). Misfolded tau was only found in EC and DG neurons (white arrows) of ECrTgTau but not ECrTgTau-Mapt0/0 animals (n=4 sections/mouse, 3 mice/group). Scale bars 50 µm.

B+C. Immunofluorescence labeling and stereological counting of microglia in entorhinal cortex (B) and astrocytes in hippocampus (C) indicated early signs of neurodegeneration in ECrTgTau mice. The significantly increased number of Iba1-positive microglia in the EC layer II/III of ECrTgtau mice (compared to WT) was partially rescued in ECrTgTau-Mapt0/0 mice (non-significant). The number of GFAP-positive astrocytes was similar across all genotypes (non-significant). Mean±SEM, n=4 sections per mouse, 3 mice/group, one-way ANOVA with Bonferroni correction. Scale bars 100 µm.
Removing endogenous tau does not prevent tau propagation yet reduces its neurotoxicity (2015)
Figure 4

Figure 4. Tau knock-out rescues P301Ltau induced atrophy and neurodegeneration.

Human, mouse and total tau protein levels in cortical TBS-extracts of rTg4510, rTg4510-Mapt0/0, and control mice: The amount of human tau (Tau13 antibody) was comparable in rTg4510 and rTg4510-Mapt0/0, moTau (Tau/5) was comparable in WT and rTg4510, and total tau levels (hu+moTau, DAKO antibody) were (expected) highest in rTg4510 mice. Mean±SEM, n=3 mice/group, non-significant.

Whole brain weights of 9-month-old animals revealed pronounced brain matter loss in rTg4510 compared to WT mice (weight loss >16%), which was rescued in rTg4510-Mapt0/0 mice to >96%. Mean±SEM, n=5 mice/group.

Cortical thickness measured adjacent to HPC, from CTX surface to corpus callosum, was decreased in rTg4510 mice by ≈25% compared to WT mice. rTg4510-Mapt0/0 showed no CTX thinning compared to Mapt0/0 or WT mcie. Mean±SEM, n=3 mice/group.

The number of neurons (NeuN+ cells) in the cortex of rTg4510 mice was significantly reduced to ≈67% compared to both WT and rTg4510-Mapt0/0. Mean±SEM, n=3 mice/group.

The volume of hippocampal region CA1, with CT the most effected regions in rTg4510 mice, was significantly reduced in rTg4510 by ~70% volume; rTg4510-Mapt0/0 had significantly larger CA1 volume left (reduced by only ~40%). Mean±SEM, n=3 mice/group.

rTg4510 showed strong signs of neuroinflammation with extremely high numbers of activated astroglia (GFAP+, red) and microglia (Iba1+, white) in the CTX compared to WT mice. Both astro- and microgliosis was reduced by ~50% in rTg4510-Mapt0/0 mice. Mean±SEM, n=3 sections/mouse and 5 mice per/group. For all panels: two-tailed Student’s T-test and one-way ANOVA with Bonferroni for multiple comparison, ns not significant, scale bars 100 µm.
Removing endogenous tau does not prevent tau propagation yet reduces its neurotoxicity (2015)
Figure 5

Figure 5. Reduced P301Ltau and NFT neurotoxicity in absence of endogenous tau.

Cortical extracts from rTg4510-Mapt0/0 brains had significantly less phospho-tau (CP13, PHF1, 12E8) than rTg4510 extracts. Compared to WT mice, both transgenic tau lines had high levels of phospho-tau. Mean±SEM, n=3 mice/group.

Representative images of gallyas silver stained aggregated tau in cortices from 12-month-old mice unravel stunning differences in the degree of tau pathology in rTg4510 compared to rTg4510-Mapt0/0 mice. Mean±SEM, n=3 mice/group.

Higher magnification images of silver (12 month-old) and Thioflavine-S (9month-old) stained cortices show mature tangles (white arrows in Thio-S stain) in rTg4510 and rTg4510-Mapt0/0 mice; enhanced pathological changes such as neuritic tau accumulation and neuropil vacuolation around NFTs are found only in rTg4510 mice. Stereological counting revealed similar numbers of cortical NFTs between in rTg4510 and rTg4510-Mapt0/0 mice at 9 and 12 month of age. Because of the pronounced neuronal death only in rTg4510 mice, the percentage of tangle-bearing neurons was ≈1.6 to 1.8-fold higher higher in 9 and 12-month old rTg4510 mice. Mean±SEM, n=3 sections/mouse, 3 mice/group.

Immuno-FISH for huTau mRNA (green) and phospho-tau (PHF1, red) shows obvious differences in the distribution of neurons in cortex layer II/III: 9-month-old rTg4510 mice had more neurons filled with NFT-like phosphorylated tau (PHF1+, red), and rTg4510-Mapt0/0 mice had significantly more huTau mRNA positive neurons (FISH+). rTg4510-Mapt0/0 mice had also more neurons still expressing both PHF1 and huTau mRNA (PHF1+ FISH+), suggesting a reduced neurotoxicity of P301Ltau expression in rTg4510-Mapt0/0 mice. Mean±SEM, n=3 sections per mouse, 3 mice/group. For all panels: two-tailed Student’s T-test and one-way ANOVA with Bonferroni for multiple comparison, ns not significant, scale bars 100 µm.

Immuno-FISH showing EC neurons having both misfolded somatic tau (Alz50, red) and human tau mRNA (green; white arrows) in rTg4510-Mapt0/0 but rarely in rTg4510 mice. n=3 sections, 2 mice/group. Scale bars 50 µm.
Removing endogenous tau does not prevent tau propagation yet reduces its neurotoxicity (2015)
Figure 6

Figure 6. Differences in tau oligomers and reduced seeding activity in rTg4510-Mapt0/0 mice.

Extraction of cortices revealed similar human tau (Tau13) in TBS-extracts (not significant) but significantly more human tau in TritonX-100 (TX-100) extracts of rTg4510-Mapt0/0 compared to rTg4510 mice. Mean±SEM, n =3 mice/group, two-tailed Student’s T test, ns non significant.

Native gel electrophoresis of cortical TBS-extracts showed small differences in HMW (oligomeric) human tau between rTg4510 and rTg4510-Mapt0/0 brains. Western blot lanes were averaged across ~2/3 of the width (black rectangular and arrow in Tau13 blot). The mean±SEM (n=3 mice/group) of these averages was plotted as longitudinal lane profiles. Differences in HMW tau are indicated by red and black arrows.

TBS-brain extracts were applied to a HEK293 cell tau aggregation seeding assay(Holmes et al, 2014, Sanders et al, 2014), in which TauRDP301S-CFP and TauRDP301S-YFP are co-expressed intracellularly. The formation of intracellular fluorescent TauRDP301S aggregates leads to Foerster resonance energy transfer (FRET) activity between co-aggregated CFP and YFP-tags and correlates with the tau aggregation seeding activity of the applied brain extracts. After 24 hours, cells treated with extract (0.5 µg and 1.0 µg total protein per 96 well) from 9-month-old rTg4510 had significantly more intracellular YFP-positive (white arrows) aggregates compared to rTg4510-Mapt0/0 extracts; FRET activity of TauRDP301S aggregates appeared similar for both rTg4510 and rTg4510-Mapt0/0. WT and Mapt0/0 extracts never showed seeding activity. Addition of lipofectamine corrected for differences in cellular uptake of tau and led to similar differences in seeding activity between rTg4510 and rTg4510-Mapt0/0 mice. Two-tailed Student's T-test, mean±SEM ns, not significant, Insets 100 µm, Scale bars 50 µm.
TUBB1 mutations cause thyroid dysgenesis associated with abnormal platelet physiology (2018)
Figure 3

Figure 3. β1-tubulin expression in the developing thyroid and deleterious effect of TUBB1 mutations

A) TUBB1 is expressed in the developing human thyroid at 8 gestational weeks (GW), 10 GW, and 12 GW and in the adult human thyroid: quantitative PCR results normalized to one of three thyroid tissues at 8 GW value (in black) and peptidylprolyl isomerase A. Experiments with at least three tissues per stage. Statistical comparisons versus 8 GW (in black) using ANOVA test showed no significant differences.

B) Tubb1 is expressed in the developing mouse thyroid at E13.5, E15.5, and E17.5 and in the adult mouse thyroid: quantitative PCR results normalized to one of three thyroid tissues at E13.5 value and peptidylprolyl isomerase A. Experiments with at least three tissues per stage. Statistical comparisons versus E13.5 (black), **p<0.01 using ANOVA test.

C) Sorted mouse thyroid cells, Tubb1 expression in endothelial cells (Pecam-positive cells), epithelial cells (Epcam), fibroblasts (Pdgfra), and leucocytes (CD45) at E17.5 and adulthood: quantitative PCR results (normalized to Epcam-positive cells at adult stage and peptidylprolyl isomerase A). Mean±SEM of three independent cell-sorting experiments. Statistical comparisons versus epithelial cells (in black) at each stage, *p<0.05 using ANOVA test.

D) Immunohistofluorescence of β1-tubulin (in red), thyroglobulin (TG, in green), and both merged (from left to right) at 12 GW in human thyroid tissue. The boxes delineate the enlarged areas shown below.

E) Structural representation of wild-type and p.P160L mutated β1-tubulin showing the change in conformation surrounding helix H4. Top: proline at position 160 in pink; bottom: substituting leucine at the same position in blue

F) Localization of transfected Myc-tagged wild-type and mutant (P160L) β1-tubulin in Nthy cells. Immunostaining with anti-Myc antibody (in green) and microtubule cytoskeleton stained with α-tubulin antibody (in red). Note that β1-tubulin -P160L is found throughout the cytoplasm showing puncta appearance, whereas wild-type β1-tubulin colocalizes with the microtubules.
TUBB1 mutations cause thyroid dysgenesis associated with abnormal platelet physiology (2018)
Figure 4

Figure 4. Tubb1-/- mice have abnormal thyroid development

A) Thyroid morphology was investigated using Nkx2-1 staining at E9.5 and E11.5 (sagittal sections) and at E13.5, E15.5, and E17.5 (transverse sections) in wild-type (wt) and Tubb1-/- littermates. Nkx2-1was used as a marker of early thyrocyte progenitors and differentiated thyrocytes. Delays in thyroid migration and in fusion of the median anlage to the ultimobranchial bodies were observed at E11.5 and E13.5 (arrow), respectively, in Tubb1-/- mice. At E11.5, stained migrating thyroid cells were visible along the tract only in Tubb1-/- littermates (arrow). At E17.5, a pyramidal lobe was visible in Tubb1-/- littermates (arrow). tr: trachea; ub: ultimobranchial body. Scale bar: 50 μm

B) Total thyroid surface area (μm2) was quantified using Nkx2-1 staining at each embryonic stage. Top: thyroid surface area normalised for weight of each embryo. Bottom: thyroid surface area in μm2. Right: proliferation ratio calculated as the proportion of Nkx2-1-positive cells labelled with Ki67 at E9.5 in wt and Tubb1-/- thyroid anlages. ma: median anlage. Note that the thyroid ma is larger and the proliferation ratio higher at E.9.5 in Tubb1-/- mice, whereas from E13.5 onwards the Tubb1-/- thyroids were hypoplastic. Wt in black, KO, Tubb1-/- in grey

C) Thyroid marker expression by quantitative PCR in thyroid tissue at E15.5 and E17.5 in Tubb1-/- versus wt mice normalised for peptidylprolyl isomerase A. Note the decreases in thyroid differentiation markers at E15.5 and E17.5 and also in thyroid transcription factors at E17.5.

D) Staining of Nkx2-1 and T4 at E17.5 and surface area quantification demonstrating T4 retention in Tubb1-/- versus wt thyroids. The data are the percentage of T4 or calcitonin (CT) surface area versus total thyroid area (estimated from the Nkx2-1-stained surface area). Scale bar: 50 μm. Student's test, *p<0.05, **p<0.01 and ***p<0.001.

Experiments were done on at least three tissues per stage for each genotype.
TUBB1 mutations cause thyroid dysgenesis associated with abnormal platelet physiology (2018)
Figure 5

Figure 5. Tubb1-/- mice have altered thyroid function with impaired hormone secretion

A) Serum TSH and T4 levels in 3-month-old Tubb1-/- and wild-type mice. Numbers of animals tested were 10 wild-type males and 14 Tubb1-/- males for TSH and for 14 wild-type and 22 Tubb1-/-males for T4. Tubb1-/- mice had hypothyroidism with elevated TSH and decreased T4 versus wild-type mice. Student's test, ** p<0.01.

B) Nkx2-1 (in brown) immunostaining of adult thyroid tissue. Note the disorganisation of the thyroid tissue in Tubb1-/- versus wild-type mice.

C) Ultrastructural alterations shown by electron microscopy in wild-type and Tubb1-/- thyroid tissues. In Tubb1-/- tissues, note the disorganisation of secretion vesicles (white asterisks) and rods of identical density to secretion vesicles (white arrow). The ER is considerably dilated in Tubb1-/- thyrocytes. Representative views. Scale bars at the bottom left for each view. Co: colloid

D) ER stress in Tubb1-/- thyroid tissue. Top: Chop and XBPs expression by quantitative PCR in adults, normalized to peptidylprolyl isomerase A. Experiments with at least three tissues per stage for each genotype; wt in black and Tubb1-/- in grey. Bottom: Chop and Actin protein expression by western blotting in three representative wild-type and Tubb1-/- mice. The Chop band quantification normalised for Actin confirms the increased Chop expression demonstrated by quantitative PCR in Tubb1-/- versus wild-type thyroids.

All lanes are from the same blot, which was cut where indicated.

Student's test, *p<0.05 and ***p<0.001.

E) Co-immunostaining of endoplasmic reticulum (ER) marker (KDEL, in red), thyroglobulin (Tg in green), and both merged (from left to right) in adult thyroid tissue. Note the thyrocyte disorganisation in Tubb1-/- mice.
TUBB1 mutations cause thyroid dysgenesis associated with abnormal platelet physiology (2018)
Figure 6

Figure 6. TUBB1 mutations induce abnormal platelet formation or macroplatelets

A) Representative blood smears of patients with TUBB1 mutations (P1 and P3 homozygous for p.P160L, P4 heterozygous for p.Y106X, and P6 and P7 heterozygous for c.35delG) after May-Grünwald Giemsa staining. Variable platelet size in patients was observed with all three mutations with presence of macroplatelets (arrows).

B) Transmission electron microscopy (TEM) analysis of platelet ultrastructure in the patients. The results confirm the abnormal platelet morphology.

C) Representative images of proplatelet formation in P1 and P4. Cultured control and patient megakaryocytes (MKs) after thrombopoietin-induced differentiation were spread over a BSA-coated coverslip on day 10. On day 13 or 14, MKs were fixed (4% paraformaldehyde) and proplatelet structure was observed after β-tubulin staining. Scale bars: 20 μm. Only P1 and P4 could be studied. The graphs show the mean ± SEM of the shaft thickness of proplatelet extensions (left) and the diameter of coiled elements (right) of the future proplatelets, both of which were significantly increased in the patients, indicating that the TUBB1 mutations (homozygous p.P160L and heterozygous p.Y106X) affected proplatelet morphology. Statistical significance was determined by one-way ANOVA, followed by Dunnett's multiple comparisons test (*p<0.05, ***p<0.001; 20-60 MKs were analysed/patient).
TUBB1 mutations cause thyroid dysgenesis associated with abnormal platelet physiology (2018)
Figure 7

Figure 7. TUBB1 mutations alter protein expression in platelets and platelet functions

A) Relative expression of α-tubulin and β1-tubulin in platelets from P1 and P3 (homozygous p.P160L), P4 (heterozygous p.Y106X), and P6 and P7 (heterozygous c.35delG) was quantified by Western blotting using specific antibodies against α-tubulin or β1-tubulin. With both mutations, α-tubulin expression was normal but β1-tubulin expression was significantly decreased. The β1-tubulin antibody recognizes C-terminal domain.

B) αIIbβ3 integrin activation was evaluated by flow cytometry (% of positive platelets and mean fluorescence intensity) in whole blood from P1 and P3 (homozygous p.P160L) and from P6 and P7 (heterozygous c.35delG); P4 could not be studied. While no αIIbβ3 integrin activations were detected in P6 and P7 (family 3), P1 and P3 (family 1) exhibited a significant increase of αIIbβ3 activation, indicating basal platelet activation.

C) Aggregation of washed platelets induced by ADP (5 or 10 μM) or collagen (0.6, 0.8 or 2 μg/mL) was evaluated in at least one member of each family. Patients from families 1 and 2 had increased platelet aggregation in response to low doses of agonist versus controls, suggesting that TUBB1 affected by homozygous p.P160L and heterozygous p.Y106X mutations affected platelet function. Platelet aggregation to both agonists was normal in both patients from family 3 (heterozygous c.35delG).

Family F1, n=3 independent experiments; Family F2, n=1 experiment; Family F3, n=2 independent experiments.

Statistical significance was determined by one-way ANOVA, followed by Dunnett's multiple comparisons test (*p<0.05, **p<0.01, ***p<0.001, nd: statistical significance not determined because n≤2).