Chrysophanol, an anthraquinone from AST2017-01, possesses the anti-proliferative effect through increasing p53 protein levels in human mast cells.

Abstract

Natural products are well known as the source of drugs in the treatment of allergic inflammation. Chrysophanol, an anthraquinone from the AST2017-01 extract, showed a beneficial anti-inflammatory effect on activated human mast cells in our previous study. However, a regulatory effect of AST2017-01 and chrysophanol on mast cell proliferation induced by thymic stromal lymphopoietin (TSLP) remains unclear. The present study determined the anti-proliferative effect and the fundamental mechanism of AST2017-01 and chrysophanol in mast cells. We evaluated an anti-proliferative effect of AST2017-01 and chrysophanol in TSLP-stimulated human mast cell line, HMC-1. Without cytotoxicity, AST2017-01 and chrysophanol decreased mast cells growth and Ki67 mRNA expression increased by TSLP. AST2017-01 and chrysophanol enhanced expressions of p53 and Bax, whereas inhibited expression of Bcl-2. AST2017-01 and chrysophanol restored caspase-3 activity which was decreased by TSLP. AST2017-01 and chrysophanol suppressed expressions of murine double minute-2 protein and phosphorylated-signal transducer and activator of transcription six which are associated with the regulation of p53 protein. AST2017-01 and chrysophanol decreased levels of interleukin (IL)-13, IL-6, and tumor necrosis factor-α. Moreover, AST2017-01 and chrysophanol reduced mRNA expressions of TSLP receptor and IL-7 receptor α. Therefore, this study proposes that AST2017-01 and chrysophanol may be promising candidates for the development of potent anti-inflammatory or health functional foods.