Acacetin-induced cell cycle arrest and apoptosis in human non-small cell lung cancer A549 cells

Cancer Letters
Ya-Ling HsuC C Lin

Abstract

In this study, we examined acacetin (5,7-dihydroxy-4'-methoxyflavone), a flavonoid compound, for its effect on proliferation in human non-small cell lung cancer A549 cells. The results first reported that acacetin not only inhibited A549 cell proliferation but also induced apoptosis and blocked cell cycle progression in the G1 phase. ELISA assay demonstrated that acacetin significantly increased the expression of p53 and p21/WAF1 protein, which caused cell cycle arrest. An enhancement in Fas and its two forms of ligands, membrane-bound Fas ligand (mFasL) and soluble Fas ligand (sFasL), might be responsible for the apoptotic effect induced by acacetin. Taken together, p53 and Fas/FasL apoptotic system may participate in the antiproliferative activity of acacetin in A549 cells.

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