Resveratrol elevates the chemosensitivity of cervical cancer cells by inducing cell cycle arrest and apoptosis / 西安交通大学学报(医学版)

ABSTRACT

Objective: To explore the effect of resveratrol on the chemosensitivity of cervical cancer cells and its regulatory mechanism. Methods: Hela/DDP cells were divided into four groups Hela/DDP group, resveratrol group, CDDP group, and resveratrol+CDDP group. Cell viability and proliferation were detected by CCK-8. Cell cycle and apoptosis were tested by flow cytometry. The expressions of p21, CDK2, cyclinD1, caspase-9, caspase-3, Bcl 2 and Bax were measured by Western blot. Results: The sensitivity of Hela/DDP cells to cisplatin was lower than that of Hela cells (P<0.01). Resveratrol significantly enhanced Hela/DDP cells' sensitivity to cisplatin (P<0.01). The inhibition of CDDP on the proliferation of Hela/DDP cells was increased by resveratrol (P<0.01). The G1 phase arrest of CDDP on Hela/DDP cells was enhanced by resveratrol (P<0.01). The expression of p21 was higher in resveratrol group and CDDP group than in Hela/DDP group, and the expressions of CDK2 and CyclinD1 were lower than in Hela/DDP group (P<0.01). Compared with CDDP group, the expression of p21 in resveratrol+CDDP group was elevated with the decrease in CDK2 and cyclinD1 expressions (P<0.01). The induction of CDDP on the apoptosis of Hela/DDP cells was elevated by resveratrol (P<0.01). The expressions of caspase-3, caspase-9 and Bax were higher in resveratrol group and CDDP group than in Hela/DDP group, and the expression of Bcl-2 was lower than in Hela/DDP group (P<0.01). Compared with CDDP group, apoptosis in resveratrol+CDDP group was increased with the reduced expression of Bcl-2 (P<0.01). Conclusion: Resveratrol enhances the chemosensitivity of cervical cancer cells by inducing cell cycle arrest and apoptosis.