ZEB1 and oral submucous fibrosis: Resveratrol, a natural polyphenolic flavonoid, was recently found to suppress myofibroblast activity of human buccal mucosal fibroblasts (fBMFs), responsible for the pathogenesis of the precancerous condition oral submucous fibrosis (OSF), through down-regulation of the zing finger E-box binding Homeobox 1 (ZEB1).