The inhibition of autophagy sensitises colon cancer cells with wild-type p53 but not mutant p53 to topotecan treatment.
The inhibition of autophagy sensitises colon cancer cells with wild-type p53 but not mutant p53 to topotecan treatment.
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自噬的抑制使野生型 p53(而非突变型 p53)的结肠癌细胞对拓扑替康治疗敏感
DOI:
10.1371/journal.pone.0045058
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发表时间:
2012
期刊:
影响因子:
3.7
通讯作者:
Zhu XF
中科院分区:
文献类型:
--
作者:
Li DD;Sun T;Wu XQ;Chen SP;Deng R;Jiang S;Feng GK;Pan JX;Zhang XS;Zeng YX;Zhu XF
Background Topotecan produces DNA damage that induces autophagy in cancer cells. In this study, sensitising topotecan to colon cancer cells with different P53 status via modulation of autophagy was examined. Methodology/Principal Findings The DNA damage induced by topotecan treatment resulted in cytoprotective autophagy in colon cancer cells with wild-type p53. However, in cells with mutant p53 or p53 knockout, treatment with topotecan induced autophagy-associated cell death. In wild-type p53 colon cancer cells, topotecan treatment activated p53, upregulated the expression of sestrin 2, induced the phosphorylation of the AMPKα subunit at Thr172, and inhibited the mTORC1 pathway. Furthermore, the inhibition of autophagy enhanced the anti-tumour effect of topotecan treatment in wild-type p53 colon cancer cells but alleviated the anti-tumour effect of topotecan treatment in p53 knockout cells in vivo. Conclusions/Significance These results imply that the wild-type p53-dependent induction of cytoprotective autophagy is one of the cellular responses that determines the cellular sensitivity to the DNA-damaging drug topotecan. Therefore, our study provides a potential therapeutic strategy that utilises a combination of DNA-damaging agents and autophagy inhibitors for the treatment of colon cancer with wild-type p53.
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影响因子:
9
作者:
通讯作者:
--
DOI:
10.1126/science.1201940
发表时间:
2011-08-26
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Green DR;Galluzzi L;Kroemer G
通讯作者:
Kroemer G
影响因子:
4.8
作者:
Kim, Hak-Su;Hwang, Jin-Taek;Ha, Joohun
通讯作者:
Ha, Joohun
影响因子:
13.3
作者:
Crighton, Diane;Wilkinson, Simon;Ryan, Kevin M.
通讯作者:
Ryan, Kevin M.
DOI:
10.1007/978-1-4020-6554-5_9
发表时间:
2008-01-01
期刊:
PROGRAMMED CELL DEATH IN CANCER PROGRESSION AND THERAPY
影响因子:
--
作者:
Bialik, Shani;Kimchi, Adi
通讯作者:
Kimchi, Adi