Journal: FASEB BioAdvances
Article Title: Matrix Stiffness Regulates TGFβ1 ‐Induced αSMA Expression via a G9a‐ LATS ‐ YAP Signaling Cascade
doi: 10.1096/fba.2025-00117
Figure Lengend Snippet: Inhibition of G9a activity impacts H3K9 dimethylation levels and EMT in response to TGFβ1 and matrix stiffness. Immunofluorescence staining for (A) E‐cadherin and (B) αSMA for NMuMG cells cultured on hydrogels and treated with DMSO or the G9a inhibitor UNC0642 (10 nM) with and without TGFβ1 treatment. Scale bars: 25 μm. (C) Quantification of αSMA positive NMuMG cells for various treatment conditions from immunofluorescence staining for αSMA. Data represent mean ± sem for n = 4 independent experiments, ** p < 0.01, *** p < 0.001. (D) Western blots for H3K9me2, G9a, E‐cadherin, N‐cadherin, and αSMA in NMuMG cells. Densitometric quantification of the relative expression of (E) H3K9me2, (F) G9a, (G) E‐cadherin, (H) αSMA, and (I) N‐cadherin from western blots shown in panel (D). Data are normalized with respect to the soft hydrogel DMSO control sample. Data represent mean ± sem for n = 3 independent experiments; * p < 0.05, ** p < 0.01, *** p < 0.001, **** p < 0.0001.
Article Snippet: Normal murine mammary gland (NMuMG) epithelial cells were obtained from American Type Culture Collection (ATCC Cat# CRL‐1636, RRID: CVCL_0075) and were maintained in Dulbecco's Modified Eagle Medium (DMEM; Corning) with 10% (v/v) fetal bovine serum (FBS; Atlanta Biologicals), 50 μg/mL gentamicin (Gibco), and 10 μg/mL insulin (Sigma Aldrich).
Techniques: Inhibition, Activity Assay, Immunofluorescence, Staining, Cell Culture, Western Blot, Expressing, Control