SNAIL1-deleted cardiac fibroblasts have decreased αSMA, LoxL2 & Periostin expression. (A) αSMA immunofluorescence of control (CTL) and SNAIL1-deleted (+ Cre) cardiac fibroblasts. (B) Quantification of results in (A). 30 fields were counted in each group. Shown is a representative result of one of 3 independent experiments. (C) Gel contraction assay of control (CTL) and SNAIL1-/- (+ Cre) cardiac fibroblasts. (D) Quantification of (C). Shown is pooled data from 3 independent experiments, done in triplicates. (E-J) Relative fibrogenic gene mRNA expression in SNAIL1-/- cardiac fibroblasts following TGFβ stimulation: IL6 (E), TGFβ (F), CTGF (G), LoxL2 (H), Periostin (I and J). Representative example of 3 separate experiments. (K) Western blot analysis with periostin antibody of extracts from control (CTL) and SNAIL1-/- cardiac fibroblasts. Representative example of one of three separate experiments.