Akt-p53-miR-365-cyclin D1/cdc25A axis contributes to gastric tumorigenesis induced by PTEN deficiency.
Akt-p53-miR-365-cyclin D1/cdc25A axis contributes to gastric tumorigenesis induced by PTEN deficiency.
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Akt-p53-miR-365-cyclin D1/cdc25A 轴有助于 PTEN 缺陷诱导的胃肿瘤发生
DOI:
10.1038/ncomms3544
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发表时间:
2013
影响因子:
16.6
通讯作者:
Yang, Xiao
中科院分区:
文献类型:
--
作者:
Guo, Shui-Long;Ye, Hui;Teng, Yan;Wang, You-Liang;Yang, Guan;Li, Xiu-Bin;Zhang, Chong;Yang, Xue;Yang, Zhong-Zhou;Yang, Xiao
Although PTEN/Akt signaling is frequently deregulated in human gastric cancers, thein vivocausal link between its dysregulation and gastric tumorigenesis has not been established. Here we show that inactivation ofPTENin mouse gastric epithelium initiates spontaneous carcinogenesis with complete penetrance by 2 months of age. Mechanistically, activation of Akt suppresses the abundance of p53, leading to decreased transcription of miR-365, thus causing upregulation of cyclin D1 and cdc25A, which promotes gastric cell proliferation. Importantly, genetic ablation ofAkt1restores miR-365 expression and effectively rescues gastric tumorigenesis inPTEN-mutant mice. Moreover, orthotopic restoration of miR-365 repressesPTEN-deficient-induced hyperplasia. In human gastric cancer tissues, miR-365 reduction correlates with poorly differentiated histology, deep invasion and advanced stage, as well as the deregulation of PTEN, phosphorylated Akt, p53, cyclin D1 and cdc25A. These data demonstrate that the PTEN-Akt-p53-miR-365-cyclin D1/cdc25A axis serves as a new mechanism underlying gastric tumorigenesis, providing potential new therapeutic targets.
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影响因子:
7.3
作者:
Iliopoulos D;Polytarchou C;Hatziapostolou M;Kottakis F;Maroulakou IG;Struhl K;Tsichlis PN
通讯作者:
Tsichlis PN
影响因子:
23.9
作者:
Magee, Jeffrey A.;Ikenoue, Tsuneo;Nakada, Daisuke;Lee, Jae Y.;Guan, Kun-Liang;Morrison, Sean J.
通讯作者:
Morrison, Sean J.
影响因子:
64.8
作者:
DONEHOWER, LA;HARVEY, M;BRADLEY, A
通讯作者:
BRADLEY, A
影响因子:
7.3
作者:
Lee, HS;Lee, HK;Kim, WH
通讯作者:
Kim, WH
影响因子:
3.5
作者:
Cinti, Caterina;Vindigni, Carla;Tosi, Piero
通讯作者:
Tosi, Piero