Journal: The Journal of Clinical Investigation
Article Title: Profilin1 is required for prevention of mitotic catastrophe in murine and human glomerular diseases
doi: 10.1172/JCI171237
Figure Lengend Snippet: ( A ) The percentage of patients with MC podocytes observed in kidney biopsy specimens using transmission electron microscopy (TEM) in patients with nonglomerular disease following nephrectomy (control; 0 of 5 patients, 0%), patients with focal segmental glomerulosclerosis (FSGS; 3 of 20 patients, 15%), patients with diabetic kidney disease (DKD; 3 of 26 patients, 11.5%), patients with primary membranous nephropathy (pMN; 16 of 145 patients, 11%), patients with lupus nephritis (LN; 3 of 33 patients, 9.1%), and patients with IgA nephropathy (IgAN; 7 of 110 patients, 6.4%) hospitalized between September 2019 and August 2022. ( B ) Representative TEM images of kidney biopsy specimens. Mononucleated podocytes in control and MC podocytes in patients with FSGS, DKD, pMN, LN, and IgAN are depicted with arrows. Scale bar: 2 μm. ( C ) Representative immunofluorescence images of glomeruli in control patients and patients with FSGS, DKD, pMN, LN, and IgAN with MC podocytes observed with TEM stained with profilin1 (green) and nephrin (red). Scale bar: 20 μm. ( D ) Quantification of C examining mean immunofluorescence intensity of profilin1 in the glomeruli. Total of 17 glomeruli in 3 patients from each group. * P < 0.05. Statistics were analyzed via a 1-way ANOVA with Dunnett’s correction. ( E ) Representative immunofluorescence images of urine samples in patients with FSGS, DKD, pMN, LN, and IgAN with MC podocytes stained with WT1 (green) and DAPI (blue). Arrows denote multinuclei. Scale bar: 20 μm. ( F ) Quantification of urine protein excretion in patients with FSGS, DKD, pMN, LN, and IgAN at the time of kidney biopsy. MC podocytes and non-MC podocytes were observed with TEM individually in each group.* P < 0.05. Statistics were analyzed via a 2-tailed t test.
Article Snippet: Rabbit anti-profilin1 monoclonal antibody (used for immunofluorescence, Thermo Fisher Scientific, catalog MA5-32683); rabbit anti-profilin1 polyclonal antibody (used for Western blotting, Cell Signaling Technology, catalog 3237S); guinea pig anti-nephrin polyclonal antibody (Progen, catalog GP-N2); rabbit anti-Wilms tumor 1 (WT1) monoclonal antibody (Abcam, catalog ab89901); mouse anti-WT1 monoclonal antibody (Novus Biologicals, catalog NB11-60011); rabbit anti-p21 monoclonal antibody (Abcam, catalog ab188224); mouse anti-p53 monoclonal antibody (Cell Signaling Technology, catalog 2524S); rabbit anti-cyclin monoclonal D1 antibody (Cell Signaling Technology, catalog 2978S); mouse anti-cyclin polyclonal B1 antibody (Cell Signaling Technology, catalog 4138S); mouse anti–Ser 319–phosphorylated γH2AX monoclonal antibody (EMD Millipore, catalog 05-636); rat anti-mCherry monoclonal antibody (Invitrogen, catalog M11217); goat anti-mVenus polyclonal antibody (MyBioSource, catalog MBS448126); Hoechst (Thermo Fisher Scientific, catalog 62249); rabbit anti-GAPDH monoclonal antibody (Cell Signaling Technology, catalog 2118S); mouse anti-GFP monoclonal antibody (Roche, catalog 11814460001); Alexa Fluor 488–conjugated phalloidin (Invitrogen, catalog A12379); Alexa Fluor 594–conjugated phalloidin (Invitrogen, catalog A12381); Alexa Fluor 488–conjugated tubulin (Abcam, catalog ab195883); Alexa Fluor 488 goat anti-mouse IgG antibody (Invitrogen, catalog A11029); Alexa Fluor 488 goat anti-rabbit IgG antibody (Invitrogen, catalog A11034); Alexa Fluor 488 donkey anti-goat IgG antibody (Invitrogen, catalog A11055); Alexa Fluor 594 goat anti-rabbit IgG antibody (Invitrogen, catalog A21207); Alexa Fluor 594 goat anti-mouse (Invitrogen, catalog A11032); Alexa Fluor 594 goat anti-guinea pig (Invitrogen, catalog A11076); Alexa Fluor 594 goat rat (Invitrogen, catalog A11007); Alexa Fluor 647 goat anti-rabbit (Invitrogen, catalog A21245); mouse anti–mouse IgG HRP-conjugated antibody (Rockland, catalog 18-8817-31); and rabbit anti–mouse IgG HRP-conjugated antibody (Millipore Sigma, catalog AP160P) were purchased commercially.
Techniques: Transmission Assay, Electron Microscopy, Control, Immunofluorescence, Staining