XIAP and familial pancreatic carcinoma: Srivastava et al. indicated that sulforaphane, an active compound in cruciferous vegetables, synergistically inhibits self-renewal capacity of pancreatic cancer stem cells with quercetin, a major polyphenol and flavonoid commonly detected in many fruits and vegetables, by inhibiting the expression of Nanog, phosphorylation of FKHR, Bcl-2, XIAP, activating caspase-3, and proteins involved in the epithelial-mesenchymal transition (beta-catenin, twist-1, ZEB1, and vimentin) [46].