EMBO/SourceData huggingface dataset:
Figure 3Representative images and quantification of the colony formation capacity of p53wt/wt HCT116 cells transduced with a doxycycline-inducible shScr or shPHD1 silencing construct, treated for 24 h with doxycycline with or without additional treatment for 8 h with 300 μM 5-FU. *P = 0.008 toward shScr, two-tailed unpaired t-test and n = 3/group.Tumor volume of p53wt/wtHCT116 cells transduced with a doxycycline-inducible shScr or shPHD1 silencing construct injected subcutaneously in nude mice and treated with 5-FU. *P = 0.045 toward shScr 5-FU-treated mice by two-way ANOVA with n = 6 for p53wt/wtHCT116 shScr, n = 7 for p53wt/wtHCT116 shPHD1 and p53wt/wtHCT116 shScr 5-FU-treated, and n = 8 for p53wt/wtHCT116 shPHD15-FU-treated.Tumor volume of p53−/−HCT116 cells transduced with a doxycycline-inducible shScr or shPHD1 silencing construct injected subcutaneously in nude mice and treated with 5-FU. n = 6 for p53−/−HCT116 shScr, p53−/−HCT116 shPHD1, and p53−/−HCT116 shScr 5-FU-treated and n = 8 for p53−/−HCT116 shPHD15-FU-treated.
Figure 4Western blot for p53 pS15, p53, and vinculin (vinc) in PHD1-silenced HCT116 upon treatment with 300 μM 5-FU for 8 h with or without 0.5 mM DMOG for 26 h. Vinculin (vinc) is used as a loading control.Western blot detection of PHD1-Flag and p53 in whole cell extracts (WCE) or after immunoprecipitation against the Flag-tag of overexpressed PHD1-Flag in HEK293T cells.Western blot detection of PHD1-Flag and p53 after immunoprecipitation against the Flag-tag of recombinant PHD1-Flag incubated with recombinant p53.Western blot for p53 and PHD1 in WCE or after immunoprecipitation of endogenous p53 in p53wt/wt HCT116 cells, silenced with a Scr control, siPHD1, or sip53, or after immunoprecipitation of p53wt/wt HCT116 cell lysates with an IgG control.
Figure 5Western blot for p53 pS15, p53, and vinculin (vinc) in HCT116 treated with 300 μM 5-FU upon silencing of PHD1 and p38α, alone or in combination. Vinculin (vinc) is used as a loading control.Detection of p53 pS15 and p53 after in vitro phosphorylation by p38α, p38β, or p38γ of p53immunoprecipitated from cells silenced for a control (SIMA) or PHD1.Detection by Western blot of p53 and p38 from whole cell extracts (WCE) or after immunoprecipitation of p53 from cell silenced for a Scr control or siPHD1 and treated for 1 h with 300 μM 5-FU.
Figure 6Transcription analysis of CDKN1A, GADD45, MDM2, BAX, PUMA in PHD1-silenced p53wt/wt HCT116 either untreated or treated for 8 h with 300 μM 5-FU.Western blot for cleaved parp and vinculin (vinc) in PHD1-silenced HCT116 treated for 20 h with 300 μM 5-FU alone or in combination with 3 μg/ml α-amanitin.PHD1 mRNA levels in p53R248/− HCT116 silenced for PHD1. *P = 0.0005 toward scrambled control with a two-tailed unpaired t-test and n = 3/group.Western blot for p53 pS15, p53, and vinculin in PHD1-silenced p53R248/− HCT116 upon 8-h treatment with 300 μM 5-FU.Western blot for cleaved casp3 and vinculin in p53R248/− HCT116 silenced for PHD1 and treated with 300 μM 5-FU for 24 h.
Figure 7Western blot for pH2AX and vinculin (vinc) in p53wt/wt and p53−/− HCT116 cells after 24-h treatment with 300 μM 5-FU.Detection of pH2AX and vinc in p53S15A→p53−/− HCT116 cells silenced for PHD1 and treated with 300 μM 5-FU for 24 h.Detection of pH2AX and vinc in HCT116 silenced with a second silencing construct of PHD1 and treated for 24 h with 300 μM 5-FU.Western blot for pH2AX and vinc in HCT116 treated for 20 h with 200 nM SN-38 or 24 h with 20 μM oxaliplatin.Western blot for pH2AX and vinc in p53R248/− HCT116 cells silenced for PHD1 upon treatment with 300 μM 5-FU for 24 h.Detection by Western blot of p53 and XPB from whole cell extracts (WCE) or after immunoprecipitation of p53 from cells silenced for Scr control or siPHD1 and treated for 4 or 8 h with 300 μM 5-FU.Western blot for pH2AX and vinc in HCT116 silenced for PHD1 alone or in combination with silencing for XPB upon treatment with 300 μM 5-FU for 20 h.
Figure 1Determination of serum testosterone (B) and 17β-estradiol levels, in post-pubescent male, castrated male (CtM), and female Hanwoo (n = 5 in each group).Determination of the body weight , in post-pubescent male, castrated male (CtM), and female Hanwoo (n = 5 in each group).D. PCoA of the rectal bacterial 16S rRNA gene sequences based on the weighted UniFrac distance matrix.E. Discriminant taxa of the male and CtM rectal microbiota, as determined by the linear discriminant analysis effect size (LEfSe). The different abundances are represented by LDA scores.F. The serum metabolome profiles were analyzed using GC-TOF-MS and clustered by PCoA based on the Bray-Curtis dissimilarity matrix.G. The relative abundances of serum metabolites displayed as bar graphs (n = 5 in each group).H. The BCAA serum levels quantified enzymatically, as described in the materials and methods section.
Figure 2A. Serum testosterone levels in the adult male and CtM Hanwoo (n = 10 in each group). The scattered dots in the bar graph represent the individual replicates.PCoA, based on the weighted UniFrac distance matrix, of the bacterial 16S rRNA gene sequence data for the rumen, ileum, and colon, shown for the different segments of the gastrointestinal tract (B)C. PCoA, based on the weighted UniFrac distance matrix, of the bacterial 16S rRNA gene sequence data or the rumen, ileum, and colon, combined data (C). D. Microbial dissimilarity (calculated based on the weighted UniFrac distance matrix, 100 values in each group) between the male and CtM groups in the different intestinal compartments. The lines, boxes, and whiskers in the box plot diagrams represent the median, first and third quartiles, and min-to-max distribution of replicate values, respectively. E. The relative abundances of abundant bacterial taxa (> 0.5% of the mean abundance).
Figure 3B. The intestinal branched-chain amino acid (BCAA) levels in the adult male and CtM Hanwoo (n = 10 in each group). BCAA levels in the luminal contents of the ileum, cecum, and colon were quantified by an enzymatic method using a BCAA assay kit. The lines, boxes, and whiskers in the box plot diagrams represent the median, first and third quartiles, and min-to-max distribution of replicate values, respectively. The scattered dots in the box plot diagrams represent the individual replicates.
Figure 4A. Representative images of dressed bodies of the adult male and CtM Hanwoo (n = 10 in each group).B. Dressed body weight, thickness of the dorsal subcutaneous fat, total weight of the extramuscular fat (posterior subcutaneous fat, mesenteric fat, and retroperitoneal fat), and serum levels of the branched-chain amino acids (BCAAs).C. Representative images of fresh striploin muscle from the adult male and CtM carcasses (n = 5 in each group).D. The intramuscular fat area in size-normalized muscle.E. The intramuscular metabolome profiles analyzed using GC-TOF-MS and clustered by PCoA based on the Bray-Curtis dissimilarity matrixF, G. The relative abundances of intramuscular metabolites (F) and β-hydroxybutyrate (3-HB) (G) in the male and CtM samples.H. The serum and mucle ketone body levels, quantified enzymatically, as described in the Materials and Methods section (n = 10 in each group).
Figure 5B. Serum testosterone levels.C. PCoA, based on the weighted UniFrac distance matrix, of the bacterial 16S rRNA gene sequence data for the luminal contents of the ileum and colon, shown according to the different diets and antibiotic treatment.D. The relative abundances of the family Peptostreptococcaceae are displayed as a box and dot plot.E. The serum branched-chain amino acid (BCAA) levels quantified enzymatically, as described in the Materials and Methods section.F. The total weight of the extramuscular fat, including posterior subcutaneous fat, mesenteric fat, and retroperitoneal fat.G, H. Representative images (G) and weight (H) of the hindlimb intermuscular fat. The images are from a longitudinal section of the hind leg. The fat weight data are presented as a percentage of the body weight.I. Serum and hindlimb muscle ketone body levels quantified enzymatically.
Figure 6B. The serum testosterone levels in the Sham-R and castrated male (CtM)-R mice.C. PCoA, based on the weighted UniFrac distance matrix, of the bacterial 16S rRNA gene sequence data for the luminal contents of the ileum and colon.E. The relative abundances of the family Peptostreptococcaceae are displayed as a box and dot plot.F. Weights of the posterior subcutaneous fat, epididymal fat, mesenteric fat, and retroperitoneal fat in the Sham-R and CtM-R mice.G, H. Representative images (G) and weight (H) of the hindlimb intermuscular fat in the Sham-R and CtM-R mice. Images were obtained from a longitudinal section of the hind leg. The fat weight data are presented as a percentage of the body weight.I. Serum and hindlimb muscle ketone body levels, quantified enzymatically.
Figure 7B. Body weight gain in response to the different levels of dietary BCAAs.C. Representative images of gross anatomy.D. The total weight of the extramuscular fat (posterior subcutaneous fat, epididymal fat, mesenteric fat, and retroperitoneal fat) in the mice fed high-fat diet (HFD) with or without BCAAs.E. The serum BCAA levels in the mice fed HFD with or without BCAAs.F. PCoA, based on the weighted UniFrac distance matrix, of the bacterial 16S rRNA gene sequence data for the luminal contents of the ileum and colon are shown. The body weight gain data are presented as a percentage of the initial body weight. The fat weight data are presented as a percentage of the body weight.G. Serum and hindlimb muscle ketone body levels, quantified enzymatically.
Figure 1(B, Sequential dissociation of EI24 and BiP from IRE1 elicits a two-phase activation of IRE1 in response to ER stress. Cells were treated with 4 μM tunicamycin (TM) for the indicated times. The interactions of EI24 and BiP with IRE1 were analyzed by immunoprecipitation(D) EI24 knockout promotes the activation of IRE1, but not PERK or ATF6. Control (sgGFP) and EI24 knockout (sgEI24) HeLa cells were treated with 4 μM TM for the indicated times. Protein expression was analyzed by immunoblotting.(G) Expression of Flag-EI24 in EI24 knockout cells inhibits IRE1 activity. Flag-Metap2 served as the control. Cells transfected with the indicated cDNAs were treated with or without 4 μM TM for 2 hr. Protein expression was analyzed by immunoblotting.
Figure 2(B) EI24 persistently localizes on the ER regardless of the presence or absence of ER stress. HeLa cells stably expressing Flag-EI24 were treated with or without 4 μM tunicamycin (TM) for 2 hr. Colocalization of EI24 with ER was analyzed. KDEL-mCherry, ER marker. Scale bar, 10 μm.(D) The C-terminus of EI24 is required for IRE1 binding. HeLa cells transfected with the indicated EI24 mutants were treated as in (B), after which protein-protein interactions were analyzed by immunoprecipitation (IP). The star represents IgG light chains. (E) The C-terminus of EI24 binds to IRE1 in a persistent fashion. HeLa cells transfected with the indicated EI24 domains were treated as in (B). Protein-protein interactions were analyzed by IP. The star represents IgG light chains. ((I) EI24 overexpression cannot prevent the activation of the phospho-mimicking (3SE) IRE1 mutant. Wild-type and IRE1 3SE knock-in HeLa cells were transfected with empty vector or Flag-EI24. Transfected cells were treated as in (B). Protein expressions were analyzed by immunoblotting.(L) Expression of full-length EI24 or the △TM34 or △C mutant in EI24 knockout HeLa cells for comparison of their functions. HeLa cells transfected with the indicated EI24 mutants were treated as in (B). Protein expressions were analyzed by immunoblotting.
Figure 3(B, C) EI24 knockout causes resting-state ER calcium reduction (B) and cytosolic calcium elevation (C) under ER stress. Control (sgGFP) and EI24 knockout (sgEI24) HeLa cells were first perfused in TM-free buffer, and switched to the buffer containing 4 μM TM to induce ER stress where indicated. Resting state calcium levels in the ER (B) and cytosol (C) with or without TM are displayed in columns. Data information: N = 20 cells for one replicate. Data are mean ± SEM (n = 3 technical replicates). ns, no significant difference; ***P < 0.001; two-tailed Student's t-test.(G) Knockdown of IP3R1 prevents calcium mobilization from the ER to the cytosol. The measurements were similarly performed as in (E), and were from the same batch of cells. Data information: N = 20 cells for one replicate. Data are mean ± SEM (n = 3 technical replicates). ns, no significant difference; ***P < 0.001; two-tailed Student's t-test.(I) Wild-type EI24, but not the TM34- or C-terminus-deleted mutant, preserves ER calcium stores in EI24 knockout cells. The measurements were similarly performed as in (E), and were from the same batch of cells. Data information: N = 20 cells for one replicate. Data are mean ± SEM (n = 3 technical replicates). ns, no significant difference; ***P < 0.001; two-tailed Student's t-test.
Figure 4(B) Knockdown of IP3R1 prevents ER stress-induced apoptosis in EI24 knockout cells. Cells were cultured with or without 4 μM TM for 8 hr. Percentages of early apoptotic cells were measured by flow cytometry. Data information: N ≈ 10000 cells for one biological replicate. Data are mean ± SEM (n = 3 or 4 biologically independent replicates). ns, no significant difference; ***P < 0.001; two-tailed Student's t-test(D) Knockdown of IP3R1 prevents ER stress-induced apoptosis. Cells were treated with 4 μM TM for the indicated times. Protein expressions were analyzed by immunoblotting.(F-H) Reintroduction of full-length EI24, but not the TM34- or C-terminus-deleted mutant (F, G) or the C-terminus alone (H), inhibited ER stress-induced apoptosis in EI24 knockout cells. Cells treated with or without TM were analyzed for apoptosis by flow cytometry (F, H) or by immunoblotting (G). Arrows in (H) denote decreased or increased apoptotic levels. Data information: N ≈ 10000 cells for one biological replicate. Data are mean ± SEM (n = 3 or 4 biologically independent replicates). ns, no significant difference; ***P < 0.001; two-tailed Student's t-test for F), one-tailed Student's t-test for (H).
Figure 1 C. Kinesin protein family members affinity purified by biotinylated R3 peptide from mouse sciatic nerve axoplasm, identified by mass-spectrometry (schematics are based on (Hirokawa et al, 2009). Biotinylated A3 peptide served as a control. Mean spectral counts (normalized plus pseudocounts) ± SEM, n = 3 independent biological repeats. All proteins shown were found to significantly purify with R3, but not A3, with probability > 0.95 and a mean fold change > 2 by SAINTexpress analysis
Figure 2 A. GAR domain deletion or mutation perturbs binding to Kif5a. Co-immunoprecipitation analysis of Kif5a and HA-Dendra2-tagged nucleolin (both overexpressed in HEK-293 cells). IP was performed with HA antibody and probed in Western blot with anti-Kif5a and anti-HA antibodies. Ncl FL - HA -Dendra2- full length nucleolin; Ncl ΔGAR - HA-Dendra2- nucleolin with a GAR domain deletion; Ncl GAR(N) - HA-Dendra2- nucleolin with all 10 arginines in the GAR domain mutated to asparagines; DEN - Dendra2. Note that HA input blots for HA-Dendra2 (Dendra) and the other three constructs are from the same membrane, but shown discontinuously owing to the different migration of these proteins in PAGE.
Figure 3 D. Uptake of TAMRA-labeled R4 and N4 peptides into cultured DRG neurons. Cells were incubated with peptides dissolved to 5 μM in growth medium for 30 min at 4°C, washed, fixed and analyzed by confocal microscopy. PC - phase contrast. Scale bar - 10 µm. E. Quantification of (D). n = 3 independent biological repeats; means ± SEM; * p<0.05, paired Student's t-test a. u. - arbitrary units.  G. HEK-293 cells were transfected with plasmids expressing HA-Dendra2- full length nucleolin (Ncl FL), HA-Dendra2-nucleolin with a GAR domain deletion (Ncl ΔGAR) or HA-Dendra2-nucleolin with all 10 arginines in the GAR domain mutated to asparagines (Ncl GAR(N)) and processed as in (F).
Figure 5 B. Western blot analysis of nucleolin in DRG neurons from wildtype (WT) and GAR+/- mice cultured in Boyden chambers. Tuj1 was used as a loading control. The higher nucleolin band in GAR+/- corresponds to WT nucleolin and lower band to nucleolin with a 41 aa deletion (corresponding to about 4 kDa reduction in protein size). C. Quantification of (B), total nucleolin levels (sum of both bands where applicable) were normalized to Tuj1 and expressed as GAR+/- / WT ratios. n = 3 independent biological repeats; means ± SEM; * p < 0.05, 1 sample t-test.
Figure 6 A, B. Representative maximum projections of exposure matched confocal images of immunofluorescence for nucleolin and neurofilament (NF) and the neuronal marker Tuj1 in sciatic nerve axons from WT and GAR+/- mice shown in (A). Upper panels show total nucleolin stain. Middle panels show merged image of nucleolin (gray), NF and Tuj1 (magenta), and DAPI (blue). Lower panels show nucleolin overlaps with NF and Tuj1 signals as the "axon only" signal. B shows quantification of nucleolin immunofluorescence with approximately a 50% reduction in nucleolin in the axons of GAR+/- mice in vivo. n = 3 WT, n = 4 GAR+/-; means ± SEM; * p < 0.05, unpaired Student's t-test. Scale bar - 10 µm.  C-F. Representative, exposure matched maximum projection confocal images of FISH for Kpnb1 (C) or mTOR (E) mRNA and NF plus Tuj1 immunostaining from sciatic nerve sections from WT (left) or GAR+/- mice. Upper panels for each show total mRNA signal. Middle panels show mRNA (gray) signals merged with NF plus Tuj1 (magenta) and DAPI (blue). Lower panels show mRNA signal that overlap with NF plus Tuj1 signal (labeled "axon only" signal). Quantification of axonal Kpnb1 (D) and mTOR (F) mRNA signals compared to the negative control, DapB mRNA, show a significant reduction in these axonal mRNAs in the GAR+/- mice. n = 3 WT, n = 3 GAR+/-; means ± SEM; ** p < 0.01, *** p < 0.001, ****p < 0.0001 unpaired Student's t-test. Scale bar - 10 µm.
Figure 7 D. Representative images for FISH analysis of Inpp5f in DRG neurons treated for 48h with 10 µM AS1411 or 10 µM control aptamer, replated and grown for 18h. FISH signal is shown in gray, cell somata (left) and axons (right) are visualized by neurofilament immunostaining (magenta). Scr - scrambled FISH probe served as a negative control. Scale bar - 10 µm.
Figure 8 A, B. Representative exposure-matched FISH/IF images for DRG neurons co-transfected with control vs. nucleolin (Ncl) siRNA plus siRNA-resistant wild type (WT; A) or ∆GAR (B) Ncl cDNAs. Axonal Kpnb1 mRNA is decreased with the Ncl knockdown, and this is not rescued by expression of ∆GAR Ncl mutant (scale bars - 10 µm).
Figure 9 A. Cultured DRG neurons from wild type (WT) Thy1-YFP mice and Thy1-YFP / GAR+/- mice (YFP signal is shown in green). Cells were imaged every hour for a period of 48 h. Scale bar - 100 μm. B. Quantification of the time-lapse imaging experiment shown in (A). Growth rate of the longest neurite of each cell was calculated from the time point of starting growth. n = 4 independent biological repeats; means ± SEM, **** p < 0.0001, two-way ANOVA.  C. Fluorescence images of cultured DRG neurons from adult C57BL/6 mice infected with AAV-PHP.s expressing HA-Dendra fused with the wild type nucleolin GAR domain (GAR WT) or with the GAR domain with all 10 arginines substituted with asparagines, GAR(N). Neurons were re-plated 9-10 days after AAV infection. 24h after re-plating cells were fixed and stained with anti-HA (grey) and anti-NFH (magenta) antibodies. Scale bar - 100 μm. D. Quantification of total axonal outgrowth and mean process length in HA-positive cells in (C). Outgrowth measurements were based on NFH staining. n = 6 independent biological repeats; means ± SEM; * p < 0.05, *** p < 0.001 (Student's-test).
Figure 1(C) Confocal image of a constricting cell during ventral furrow formation showing an overlay between the myosin-II probe Sqh::GFP and the plasma membrane marker GAP43::mCherry. Scale bar, 5 μm(D) Movie (still frames) of a gastrulating Drosophila embryo expressing endogenously tagged mVenus::βH-spectrin imaged in a cross section using two-photon microscopy. βH-spectrin is enriched at the apical surface of ventral mesodermal cells during tissue invagination (arrowheads). Scale bar, 50 μm.(E) Z-Projections of confocal image stacks showing the apical cell surface of a Drosophila embryo expressing endogenously tagged mVenus::βH-spectrin (green) and the plasma membrane marker GAP43::mCherry at 5 min (top), 7 min (middle) and 9 min (bottom) after initial medio-apical accumulation of βH-spectrin. Scale bar, 20 μm(F, G) Immunostaining of βH-spectrin (green) visualized by STED nanoscopy revealed medio-apical βH-spectrin supra-cellular fibers in mesodermal cells (F). In ectodermal cells, βH-spectrin localizes to apical cell junctions (G). Note, in (F) the junctional βH-spectrin signal is shown in magenta as a proxy for cell membranes. Scale bars, 2.5 μm.(H-J) Confocal images of the ventral surface of a Drosophila embryo expressing endogenously tagged mVenus::βH-spectrin (H), the myosin-II marker Sqh::mCherry (I) and a merge of the two (J) with βH-spectrin in green and Sqh::mCherry in magenta. Scale bars: 20 μm.(K-L) Co-staining of phalloidin (F-actin reporter; magenta) and βH-spectrin (green) of the apical surface of a mesodermal cell at the onset of ventral furrow formation (K) and at a later time point (L) visualized by confocal microscopy. White dashed lines indicate the cell boundaries segmented based on the phalloidin-staining of sub-apical confocal sections. Scale bars: 5 μm.
Figure 2(A) Z-Projection of confocal image stacks spanning 5 μm of a control embryo (left) co-expressing endogenously tagged mVenus::βH-spectrin (green) and the plasma membrane marker GAP43::mCherry (magenta) and of an embryo additionally expressing a maternally driven anti-GFP nanobody KD module to knock-down βH-spectrin (right). Co-expression of the anti-GFP nanobody KD system resulted in a drastic decrease of βH-spectrin protein levels as assessed by the fluorescent signal intensity which dropped below the detection limit.(B) Pie diagrams quantifying the percentage of control embryos (top, n=50) and βH-spectrin knock-down embryos (bottom, n=40) that formed ventral furrow either normally or with minor phenotypes (green) and the percentage of embryos that displayed severe abnormalities or did not at all undergo tissue invagination (red). The assessment of phenotypes was done in an unbiased randomized approach.(C-J) Confocal images of a control embryo (C,D) and βH-spectrin knock-down embryos with a minor phenotype (E,F), with a severe phenotype that underwent tissue invagination (G, H) and with a severe phenotype that did not undergo tissue invagination (I, J). Surface view is shown in (C,E,G,I) and the cross section through the tissue at two different time points in (D,F,H,J). All embryos expressed the plasma membrane marker GAP43::mCherry. Scale bars, 20 μm.(K, L) Quantification of apical surface area (K) and anisotropy (L) in control embryos (green, nControl: 6 embryos) and in βH-spectrin knock-down embryos (red, nβH-spectrin KD: 7 embryos). Solid lines indicate the mean values and the semi-transparent regions the corresponding standard deviation.