EMBO/sd-character-level-ner huggingface dataset:
p38IP is found on membranes, co‐localizes with mAtg9 and is required for starvation‐dependent trafficking of mAtg9.Figure 2(A) HEK293A cells were transfected with HA-p38IP alone or co‐transfected with HA-p38IP and RFP-mAtg9, homogenized and subjected to centrifugation, and the resulting post‐nuclear supernatant (PNS) was fractionated by centrifugation at 100 000 g into membrane pellet and cytosol. Equal protein amounts were resolved by SDS-PAGE and immunoblotted with anti‐mannose‐6‐phosphate receptor (MPR) antibody as a control for membrane‐associated proteins, anti‐superoxide dismutase (SOD) antibody as a control for cytosolic proteins, anti‐mAtg9 antibody, and anti‐HA antibody. HA-p38IP levels were quantified using ImageJ software and plotted relative to HA-p38IP in the PNS (n=4) (**P=0.0051). (B) HEK293 cells were depleted of mAtg9 using siRNA, then transfected with HA-p38IP and incubated in full medium or EBSS (data not shown). The asterisk indicates mAtg9‐depleted cells. Bar is 5 μM. The intensity of the nuclear versus cytosolic fluorescence in control and cells depleted of mAtg9 under fed and starvation conditions was analysed using ImageJ software (***P=0.0001, Students t‐test) (C) HEK293A cells were transfected with HA-p38IP and processed for indirect immunofluorescence. HA-p38IP was detected with an anti‐HA antibody and endogenous mAtg9 was detected with an anti‐mAtg9 antibody. HA-p38IP localizes to the nucleus and cytoplasmic puncta in full medium or EBSS. HA-p38IP co‐localizes with mAtg9 in the periphery of the cell (arrowheads). Bars (upper panels) 5 μM, (lower panels) 1 μM. (D) Anti‐mAtg9 antibody was used to immunoprecipitate mAtg9 from HEK293 cells transfected with HA-p38IP alone or with RFP-mAtg9 and HA-p38IP. A total of 5% of lysates or immunoprecipitates were probed with anti‐HA or anti‐mAtg9 antibodies. The left and right hand bottom panels were obtained from the same immunoblot, but exposed for different times to allow the endogenous mAtg9 to be visualized better. (E) HEK293 cells were transfected with control or p38IP siRNA. At 72 h after transfection, cells were incubated in either full medium or EBSS for 2 h, then fixed and immunostained to detect endogenous mAtg9 localization. mAtg9 localization was quantified by visually scoring cells for either a juxta‐nuclear or dispersed phenotype. Bars=5 μm (data are represented as mean±s.e.m. of 200 cells, *P=0.0413, Student's t‐test).
a) Two HeLa cells expressing RFP-EGFP-LC3 and labelled with AlPcS2a was 635-nm illuminated within the white rectangular region, resulting in local LC3 puncta formation, as shown in b.f5(a) Two HeLa cells expressing RFP-EGFP-LC3 and labelled with AlPcS2a was 635-nm illuminated within the white rectangular region, resulting in local LC3 puncta formation, as shown in b. (b) LC3 puncta were specifically induced within the 635-nm illuminated cell regions in a (LC3 initially distributed uniformly at t=0). (c) The loss of EGFP fluorescence from light-induced LC3 puncta preceded the disappearance of RFP fluorescence (white arrows indicate examples of LC3 puncta that exhibited diminished EGFP fluorescence), indicating their successful transition from autophagosomes to autolysosomes. Scale bars, 10 μm.
Figure 6(A) The schematic of FAM210A protein domain composition and evolutionary conservation of FAM210A protein sequence from 10 representative species analysed by AlignX software. The yellow colour shows completely conserved residues across all the species at a given position; the blue colour indicates consensus residues derived from a block of similar residues at a given position while the green colour stands for the consensus residues derived from the occurrence of greater than 50% of a single residue at a given position. The green letters suggests weak similarity to consensus residues at a given position. (B) The expression level of FAM210A mRNA in 15 human organs from the GTEx Portal database. TPM: transcripts per million of reads. The central band shows the median value and the box indicates the first and third quartiles. The sample size of human samples used for quantification in GTEx Portal database (from testis to pancreas): n=361/429/432/555/803/240/432/226/406/578/241/202/85/328/755. (C) Cellular localization of FAM210A in primary mouse ACMs detected by IF. Scale bar: 30 μm. (D) Cellular localization of recombinant FAM210A in human AC16 CM cells. FAM210A-3xFlag expression plasmid was transfected into AC16 cells for 48 hrs. Scale bar: 40 μm. (E) Immunoblot detection of FAM210A in isolated cytoplasmic and mitochondrial fractions from mouse hearts. VDAC1 and tubulin are used as fraction controls. Cyto: cytoplasm; Mito: mitochondria. A representative image is shown from three biological replicates. (F) Sub-organelle localization of FAM210A in isolated mouse cardiac mitochondria. TOM20 and ATP5B are used as the outer membrane (OM) and mitoplast (MP) markers, respectively.
| Kugel number is increased by VEGF inhibition, and kugeln contain NO.Figure 7VEGF inhibition by 2h treatment with AV951 statistically significantly increased kugel number (****p<0.0001; DMSO control n=30 embryos 8.53 ± 2.62 (mean ± s.e.m.); AV951 n=31 embryos 21.10 ± 2.71 (mean ± s.e.m.); 4dpf; 4 experimental repeats; Mann-Whitney U test). Mean kugel diameter was not statistically significantly different after AV951 treatment (p = 0.7890; DMSO control n=243 kugeln from 30 embryos 9.94 ± 0.76 (mean ± s.e.m.); AV951 n=652 kugeln from 31 embryos 9.73 ± 0.32 (mean ± s.e.m.); 4dpf; 4 experimental repeats; Student's t-test). DAF-FM staining, a vital dye for nitric oxide (NO), showed that 57.56% of kugeln were positive for nitric oxide reactivity (2.5µM incubation from 96-102hpf; n=22 4dpf embryos; 118 of 205 kugeln filled; 3 experimental repeats). Images show representative "filled" (DAF-FM positive) and "unfilled" (DAF-FM negative) kugeln. Time-lapse acquisition with DAF-FM revealed that kugeln contained NO early in their biogenesis (grey LUT; inverted). Application of LysoTracker, a vital dye that stains lysosomes or acidic compartments, showed that 17.08% of kugeln contained acidic contents (8.33µM; 96-101hpf; n=22 4dpf embryos; 62 of 363 kugeln filled; 3 experimental repeats). Images show representative "filled" (Lysotracker positive) and "unfilled" (Lysotracker negative) kugeln. The nitric oxide synthase (NOS) inhibitor L-NAME had no statistically significant effect on kugel number per embryo (0.5mM L-NAME 18h; p = 0.4870; control n=22 embryos 14.27 ± 3.35 (mean ± s.e.m.), L-NAME n=24 embryos 7.46 ± 1.61 (mean ± s.e.m.); 4dpf; 3 experimental repeats; Mann-Whitney U test). Diameter of kugeln was not affected by L-NAME (p = 0.4161; control n=315 kugeln from 22 embryos 8.77 ± 0.49 (mean ± s.e.m.), L-NAME n=179 kugeln from 24 8.66 ± 0.71 (mean ± s.e.m.); 4dpf; 3 experimental repeats; Mann-Whitney U test).
Figure 3A) Body weight in young and old control and Mfn2KO mice (n=6 mice per group). B) Epididymal adipose tissueweight in young and old control and Mfn2KO mice (n=6 mice per group). C and D) Whole body oxygen consumption was evaluated by indirect calorimetry in young and old control and Mfn2KO mice (n=6 mice per group). E) Ambulation movement of young and old control and Mfn2KO mice during day and nighttime (n=6 mice per group). F) and G) Glucose (F) oxidation fluxes expressed as the mean during day and night time (n=6 mice per group). F) and G) lipid (G) oxidation fluxes expressed as the mean during day and night time (n=6 mice per group). H) Glucose tolerance test (GTT) was performed in control and Mfn2KO old mice (n=6 mice per group). I) Insulin levels were measured in plasma from control and Mfn2KO old mice subjected to GTT (n=6 mice per group). J) Insulin tolerance test was performed in control and Mfn2KO old mice (n=6 mice per group).
Figure 3TrkB-FL main signaling cascades with indication of anchoring residues, tested drugs and their targets. Effect of TFL457 on Y515 and Y816 phosphorylation. Cultures preincubated with TMyc or TFL457 (25 μM, 30 min) were treated with NMDA (0-6 h) and analyzed with panTrkB or phosphospecific antibodies. Quantitation of pY515 and pY816. Mean ± SEM of normalized pY515 (n = 7) or pY816 (n = 4) levels obtained after NMDA-treatment (2 h) are represented relative to those found in cells with the same peptide but no NMDA. Statistical analysis was performed by unpaired Student t test (*p = 0.046; n.s. = non-significant). Analysis by immunoprecipitation of TFL457 effect on pY816 levels. Cultures preincubated and treated as before with NMDA (2 h), were immunoprecipitated with antibodies specific for phosphorylated tyrosine (pY). pY816 was analyzed by WB in immunoprecipates. TFL457 effects on neuronal viability after inhibition of TrkB-FL signaling. Cultures were preincubated (30 min) with inhibitors specific for PI3K (Wortmannin, 100 nM), MAPK/ERK (UO126, 300 nM) or PLCγ (U-73122, 5 μM) before incubation with TMyc or TFL457 (25 μM, 30 min). Viability was established 4 h after NMDA treatment. Means ± SEM relative to untreated cultures are represented and data were analyzed by ANOVA test followed by post-hoc Tukey HSD test (***p = 0.0001, **p = 0.009, *p = 0.02, n.s. = non-significant, respectively for TMyc vs TFL457 in untreated or Wortmannin, UO126 or U-73122-treated cells; **p = 0.008 for untreated vs U-73122-treated cells preincubated with TFL457; n = 5).
Figure 7A. qPCR analysis from control (black bars), NPC1I1061T (pink), and NPC1I1061T patient cells treated overnight with the SREBP inhibitor, PF-429242 (1 μM; blue bars). Error bars represent SEM from 6 technical and 2 biological replicates. B. Confocal images of tsA201 cells expressing PI4KIIα-GFP. Cells were treated with either vehicle (control), U18, or U18 and PF for 24h prior imaging. Bottom panels show an enlarged view of the enzyme in a perinuclear area. C. Quantification of PI4KIIα-GFP mean fluorescence intensity in Golgi normalized to the cytoplasm. Control: n=12; U18: n=14; U18+PF: n=12. D, E. Same as (B, C) but in tsA-201 cells transfected with PI4KIIIβ-GFP. Control: n=18, U18: n=22, U18+PF: n=23. Confocal images of tsA201 cells Cells were treated with either vehicle (control), U18, or U18 and PF for 24h prior imaging. Bottom panels show an enlarged view of the enzyme in a perinuclear area. Quantification of mean fluorescence intensity in Golgi normalized to the cytoplasm. Control: n=12; U18: n=14; U18+PF: n=12. F, G. Same as (B, C) but in tsA-201 cells transfected with P4M-YFP. Control: n=39, U18: n=42, U18+PF: n=32. H, I. Same as (F, G) but in wild-type and SCAP-/- CHO cells. Control: n=12, U18: n=11, SCAP-/- +U18: n=10.
Figure 1(A) Relative expression of the BBSome subunits in the indicated organs and T cells measured by qPCR. CT values of the BBS genes were normalized to the geometric mean of the CT values of reference genes Gapdh, Tubb2a, and Eef1a1. The expression levels are normalized to those of brain (=1). Mean+SD. Three biological replicates (the result of each biological replicate is a median of three technical replicates). (B) Immunoblot analysis of BBS4 expression in T and B lymphocytes isolated from the lymph nodes and spleen of C57Bl/6 mouse. β-actin staining served as a loading control. (C) Schematic representation of mouse models of Bbs4 deficiency used in this study. Bbs4 GT, gene-trap allele interrupting the Bbs4 gene. Bbs4 FL, allele with floxed Bbs4 exon 6. Bbs4 KO and cKO alleles with deleted exon 6. (D) Immunoblot analysis of BBS4 expression in testes and thymi lysates of Bbs4+/+ (WT), Bbs4GT/+, and Bbs4GT/GT mice. β-actin staining serves as a loading control. A representative experiment out of three biological replicates in total is shown. (E) Immunoblot analysis of BBS4 expression in the brain lysates of Bbs4+/+, Bbs4GT/GT, and Bbs4KO/KO mice. β-actin staining served as a loading control. A representative experiment out of two biological replicates is shown. (F) Hematoxylin and eosin staining of sections of seminiferous tubules from ~4 weeks old Bbs4+/+ (n=2 mice) and Bbs4GT/GT (n=4) males. Scale bar, 100 µm. Representative images are shown. (G) Genotypic ratio of Bbs4+/+, Bbs4GT/+ or Bbs4KO/+ (Het), and Bbs4GT/GT (GT) or Bbs4KO/KO (KO) offspring at weaning from mating of Bbs4GT/+ (n=145 pups) or Bbs4+/KO (n=168 pups) parents. Binomial test was used for statistical comparison of the observed distribution to the expected Mendelian ratio. (H) Bbs4+/+ and Bbs4GT/GT female littermates at 20 weeks of age. Representative litter out of seven in total. (I) Bbs4+/+ and Bbs4KO/KO female littermates at 20 weeks of age. Representative litter out of five in total. (J) Growth curves of Bbs4-deficient mice, mean ± SD is shown. Females: Bbs4+/+ (n=12 mice), Bbs4GT/GT (n=12), Bbs4KO/KO (n=6). Males: Bbs4+/+ (n=6 mice), Bbs4GT/GT (n=7), Bbs4KO/KO (n=5). (K) Leptin concentration in blood plasma taken from young adult (7-8 weeks) or mid-age (14-20 weeks) mice. Young adult mice: Bbs4+/+ (n=4 mice), Bbs4KO/KO (n=3), analyzed in two independent experiments. Mean+SEM. Mid-age adult mice: Bbs4+/+ (n=7 mice), Bbs4KO/KO (n=5), Bbs4GT/GT (n=3), analyzed in 4 independent experiments. Kruskal-Wallis tests was used for the statistical analysis. Mean+SEM.
In vivo metabolic flux analysis indicates a reduced glucose turnover in IDH mutant glioma.Figure 3A) LC-MS quantification of steady-state level of glycolysis and TCA cycle metabolites in three IDH1wt and three IDH1m PDXs and contralateral control brain (CB) (n=3/ sample/ group). Metabolites showing statistically significant group differences between IDH1wt and IDH1m are indicated (pvalue: * <0.05). Color code as in Fig. 1-2. B) Schematic of 13C6 glucose-derived carbon flux to pyruvate and TCA metabolites, highlighting expected 13C2 and 13C3 labels (in red) in intermediate metabolites. C) In vivo flux analysis of 13C-labelled glucose injected 20 minutes prior to sacrifice in one IDH1wt PDX (P3) and one IDH1m PDX (E478) (n=3/ sample). The percentage of glucose-derived 13C label is shown in selected metabolites containing 0 to 6 13C atoms (13C0 - 13C6 as indicated by color code). Note the absence of 13C2 label of αKG and D2HG in IDHm tumours, while the label was detectable in IDHwt PDX and in contralateral brain of both tumors (lower panel). D) Quantities of 13C3 and 13C2 labeled metabolites from glucose tracer experiment in (C). D2HG in IDH1m PDX shows a detectable 13C2 signature here, but represents a minor fraction of the total cellular D2HG pool in this tumor. Hex-P: hexose phosphate, PEP: phosphoenolpyruvate, Pyr: pyruvate, Cit: citrate, Mal: malate, Asp: aspartate, Glu: glutamate, Gln: glutamine, α-KG: α-Ketoglutarate, D2HG: D2-Hydroxyglutarate. Indicated statistical significant group differences are based on T test, pv: p-values.
a) A Flag-tagged FoxO1(WT), FoxO1(ΔDB), FoxO1(ΔDB3A) or an empty plasmid was individually transfected into GFP–LC3 pre-transfected H1299 cells, and the cellular localization of FoxO1 (upper panels) or GFP–LC3 punctate signals (lower panels) was observed with a confocal microscope.figf2(a) A Flag-tagged FoxO1(WT), FoxO1(ΔDB), FoxO1(ΔDB3A) or an empty plasmid was individually transfected into GFP-LC3 pre-transfected H1299 cells, and the cellular localization of FoxO1 (upper panels) or GFP-LC3 punctate signals (lower panels) was observed with a confocal microscope. Scale bars, 10 μm. (b) The numbers of punctate GFP-LC3 cells are represented by the ratio of GFP-LC3-labelled punctate cells to overall survived H1299 cells (at least 200 cells were counted). Data in b are means ± s.d. (n = 3). (c) p62 degradation and LC3-II accumulation were evaluated by western blotting in H1299 cells transfected with exogenous FoxO1-expressing plasmids mentioned above. (d) H1299 cells were labelled with [3H]leucine for 48 h, then transfected with a control plasmid or various Flag-FoxO1 plasmids, in the presence or absence of 3-MA or E64 and pepstatin A. Degradation of long-lived proteins was measured at the indicated time, 24 h after transfection. Data in d are means ± s.d. (n = 3). (e) A GFP-tagged FoxO1(3A) or an empty plasmid was co-transfected with a FoxO1-promoter luciferase plasmid into H1299 cells. After 24 h, luciferase reporter activity of FoxO1 was measured. RLU, relative luciferase units. Data are means ± s.d. (n = 3). (f) A set of RNAi-resistant rescue forms of FoxO1 plasmids were transfected into stable FoxO1-RNAi HCT116 cells in the presence or absence of E64 and pepstatin A. Western blotting was performed to detect p62 degradation and LC3-II accumulation. (g) Flag-tagged FoxO1(WT) r, FoxO1(3A) r, FoxO1(3A-NLSm) r, FoxO1(NESm) r or an empty plasmid were individually transfected into GFP-LC3 pre-transfected HCT116 cells (FoxO1-RNAi treated), and the cellular localization of FoxO1 (upper panels) or GFP-LC3 punctate signals (lower panels) were observed with a confocal microscope. (h) The numbers of punctate GFP-LC3 cells are represented by the ratio of GFP-LC3-labelled punctate cells to overall survived HCT116 cells. Data in h are means ± s.d. (n = 3).
Figure 6a, Localisation of MKS3, CEP290 and NPHP1 in RPE1 WT and SEPT2-KO after 48h serum starvation (SS) are immunostained with CEP164 (distal appendages), ODF2 (sub-distal appendages), and ARL13B (cilia). White arrows point to the specific signals for MKS3 or CEP290. The white star points to the unspecific MKS3 signal around the centrosome. Low and high exposure times for MKS3m CEP290 and NPHP1 are shown as indicated in the upper panel. Scale bar: 1µm. b-c, Quantification of (a). The length obtained for MKS3 along the cilia (b) and the relative signal intensity of the indicated proteins at the ciliary base (c) are shown. Three biological replicates, n=100 cilia per sample and repetition. Data include mean ±s.d. and P values are calculated by two-tailed unpaired student t-test. d, FRAP experiment of SSTR3-GFP in RPE1 WT and SEPT2 KO cells. Cells were starved for 48h before the beginning of inspection and imaged every 30sec for 10mins after bleaching. Scale bar: 5µm. e, Percentage of normalised SSTR3-GFP signal recovery at whole cilia after photobleching from (d). n=20 cilia are quantified from three biological replicates Data include mean ±s.d. and P values are calculated by two-tailed unpaired student t-test. f-g, Influence of MKS3 depletion on cilia length of RPE WT and SEPT2-KO cells. Cells are treated with the indicated siRNA and serum starved (SS) for 48h before immunostaining with the indicated antibodies. Representative images (f) and quantifications of proximal segment (Glu tub) and whole cilia (ARL13B) length (g) are shown. The numbers above the cartoons in (g) show the ratio of the calculated distal segments/whole cilia length. Scale bar: 2µm. Three 3 biological replicates, n=100 cilia per sample and repetition. Data include mean ±s.d. and P values are calculated by two-tailed unpaired student t-test. h-i, A functional TZ is required for KIF7 cilia tip localisation in RPE1 cells. KIF7 signal intensities are measured in ciliated RPE1 cells treated with control or MKS3 siRNA and 48h SS. Representative images (h) and quantification of KIF7 signal intensity at the base and tip of cilia (h) are shown. Scale bar: 2µm. Three biological replicates, at least 60 cilia per sample and repetition. Data include mean ±s.d. and P values are calculated by two-tailed unpaired student t-test.
Figure 1(A) The Drosophila proteome was screened to identify TA proteins using the PolyPhobius algorithm within the TOPCONS web server. Proteins with a single TMD within 35 AAs or less upstream of the C terminus and lacking a signal peptide or mitochondrial targeting peptide were selected for further interrogation. The DeepLoc predictor of protein sub-cellular localization was used to eliminate soluble proteins from the list. These procedures yielded 254 proteins, which were scored for their tail charge and hydrophobicity using the "transmembrane tendency" score of Zhao & London (B) A subset of the predicted TA proteins was screened by overexpression in Drosophila larval eye imaginal discs containing clones of a previously isolated EMC3 mutant allele, EMC3Δ4 TA protein predicted membrane localization is shown to the left: G (Golgi apparatus), ER (endoplasmic reticulum), C (cytoplasmic membrane), N (nucleus), M (mitochondria) and P (peroxisome). The ratio of fluorescence intensity for the tested TA proteins in EMC3 homozygous mutant cells over WT cells (EMC3Δ4/WT) was measured and plotted. Proteins were classified into four groups according to the ratio measured: strongly reduced (ratio<0.5; bars in red), reduced (ratio 0.5-0.8; bar in pink), normal (ratio 0.8-1.2; bars in blue) and increased (ratio>1.2; bars in dark blue). For quantification, at least 3 mutant patches were quantified per eye imaginal disc, and at least three eye imaginal discs derived from distinct flies were used (N=3). Error bars correspond to standard deviation (stdev). (C-J) All panels show Drosophila 3rd instar larval eye imaginal discs with eyeless-Flippase-induced clones of cells homozygous for EMC3Δ4 labelled by the absence of ubiGFP (green). The red channel shows ELAV, which labels the nuclei of photoreceptor cells. All UAS constructs were expressed under the control of GMR-GAL4. (C) Expression of UAS-Rh1 (4C5, in blue) and (D) Na+K+ATPase (A5-C, in blue) is strongly reduced in EMC3Δ4 homozygous mutant cells. (E) Expression of UAS-Xport-A-HA (anti-HA, in blue) and (F) UAS-fan-HA (anti-HA, in blue) is strongly reduced in EMC3Δ4 homozygous mutant cells. (G) Expression of UAS-rtv-HA (anti-HA, in blue) and (H) hid (anti-hid, in blue) is increased in EMC3Δ4 homozygous mutant cells. (I-J) Normal expression of two TA proteins in EMC3Δ4 homozygous mutant cells. (I) UAS-CG8814-HA (anti-HA, in blue) is a TA protein containing a TMD of low hydrophobicity (J) UAS-Syx13-HA is a TA protein with high hydrophobicity TMD. Scale bars represent 10 μm.
Intracellular clearance of pTau pathology by TFEBImmunohistochemical staining of hippocampus of rTg4510 (Tau) mice injected with AAV-GFP (Tau) or AAV-TFEB/AAV-GFP (Tau + TFEB) at P0 and analyzed at 4 months.Figure 3A Immunofluorescence staining of cortex of 4‐month‐old rTg4510 mice either untreated (Tau) or injected with TFEB (Tau + TFEB) at P0 using phospho‐Tau antibodies AT8 (S202/T205) and PHF1 (S396/S404) or conformation‐specific antibody MC1 and counter‐stained with DAPI. AAV‐TFEB was injected at P0 and mice were analyzed at 4 months. Scale bar: 200 μm. B Fluorescence images of GFP and immunofluorescence images of anti‐FLAG compared with immunofluorescence images of anti‐PHF1 in GFP or TFEB transfected and doxycycline induced T40PL cell line at 8, 16 or 40 h post‐transfection. Merge: Overlay of GFP or TFEB‐FLAG with PHF1. Insets are higher resolution images documenting that whereas overlapping GFP and PHF1 immunoreactivity can be observed at all the time points, TFEB‐ and PHF1‐double‐positive cells can only be detected at 8 h but not later times. Scale bar: 200 μm; in inset: 50 μM. C Pearson correlation coefficients (Pearson R−values) showing no correlation between GFP and PHF1 (PHF1/GFP) at any time points, but negative correlation between TFEB and PHF1 (PHF1/TFEB) starting at 16 h and persisting to 40 h (Student's t−test, n = 4, *P = 0.026 and **P = 0.008 for 16 and 40 h, respectively, comparing R−values for GFP/PHF1 with TFEB/PHF1). The whole view field of eight confocal projection slices per view field, four view fields per time point per transfection was used for analysis. Bar graph represents average ± s.e.m.