GDF11 induces myotube atrophy in vitro

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GDF11 induces myotube atrophy in vitro GDF11 induces myotube atrophy in vitro A, BC2C12 myoblasts were differentiated for seven days, then control (n = 5), myostatin (Mstn; n = 4), growth differentiation factor 11 (GDF11; n = 5), or transforming growth factor β (TGFβ; n = 3) supplemented media (50 ng/ml) was added for 3 days (depicted in A) before PFA fixation and staining with myosin heavy chain (MHC) to evaluate myotube diameter (B). The scale bars represent 50 μm.C, DMyotube diameter data (n = 200–400 myotubes from 3 to 5 different trials) are depicted as a histogram of diameter distribution (C) and as mean diameter (mean ± SEM; D) by treatment.EMyotube nuclear content was quantified as DAPI‐positive nuclei per μm of myotube length for control, Mstn, and GDF11 treatment groups.FPhosphorylation of SMAD3 in control, Mstn, and GDF11 treatment groups, as detected by immunoblotting. Equal loading is verified by Ponceau Red staining.Data information: Data are depicted as histogram of distribution (C) or mean ± SEM (D, E). Statistical analysis was performed using one‐way ANOVA analysis with Tukey's HSD post hoc test (non‐connecting letters indicate P < 0.05 between groups) and effect size presented as eta‐squared (η2). David W Hammers et al. EMBO Mol Med. 2017;emmm.201607231 © as stated in the article, figure or figure legend