Fig. 5: TNF-α-induced miR-155 exerts VSMC phenotypic switching.

HASMCs were transfected with 80 nM of control miRNA and siRNA (C), miR-155 mimic (M), miR-155 inhibitor (I), or sGCβ1 siRNA (S) and stimulated with or without TNF-α (10 ng/mL) for 24 h, followed by treatment with DETA/NO (100 μM) for another 24 h. a–e The mRNA and protein levels of VSMC-specific marker genes were determined by qRT-PCR (n = 6) and Western blotting. f Cell proliferation was determined by a [3H]-thymidine incorporation assay (n = 3). g The migration distance was calculated as the average distance between the edges of the scratch field (n = 5). *P < 0.05, and **P < 0.01