DJ-1 Alters Epirubicin-induced Apoptosis via Modulating Epirubicinactivated Autophagy in Human Gastric Cancer Cells
Xue-kai Pan , Fei Su , Li-hua Xu , Zhang-shuo Yang , Dan-wen Wang , Li-jie Yang , Fan-zheng Kong , Wei Xie , Mao-hui Feng
Current Medical Science ›› 2018, Vol. 38 ›› Issue (6) : 1018 -1024.
DJ-1 Alters Epirubicin-induced Apoptosis via Modulating Epirubicinactivated Autophagy in Human Gastric Cancer Cells
Epirubicin, which is a conventional chemotherapeutic drug for gastric cancer, has innate and adaptive chemoresistance. Recent studies revealed that epirubicin could induce autophagy as a defensive mechanism in drug resistance of mammary carcinoma. Another study implied that DJ-1 may be a chemoresistance-related gene. But the association between DJ-1 and drug resistance of epirubicin in gastric cancer is still ambiguous. In the present report, we explored whether and how DJ-1 conduced to epirubicin-induced apoptosis in gastric cancer. Epirubicin dose-dependently increased the expression of DJ-1 and induced autophagy. Knockdown of DJ-1 notably enhanced epirubicin-induced cell apoptosis, whereas overexpression of DJ-1 attenuated epirubicin-induced cell apoptosis. Further studies revealed that down-regulation of DJ-1 modulated epirubicinactivated autophagy which augmented epirubicin-induced apoptosis. In conclusion, our results validated that DJ-1 reduced epirubicin-induced apoptosis in gastric cancer cells via modulating epirubicin-activated autophagy.
epirubicin / gastric cancer / DJ-1 / apoptosis / autophagy
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