TSC1/TSC2 inactivation inhibits AKT through mTORC1-dependent up-regulation of STAT3-PTEN cascade.
TSC1/TSC2 inactivation inhibits AKT through mTORC1-dependent up-regulation of STAT3-PTEN cascade.
复制标题
TSC1/TSC2 失活通过 mTORC1 依赖性上调 STAT3-PTEN 级联抑制 AKT。
DOI:
10.1016/j.canlet.2011.09.006
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发表时间:
2011-12
期刊:
影响因子:
9.7
通讯作者:
张宏冰
中科院分区:
文献类型:
--
作者:
査晓军;张宏冰
Aberrant activation of mammalian target of rapamycin complex 1 (mTORC1), caused by loss or inactivation of TSC1/TSC2 protein complex, leads to negative feedback inhibition of Akt. The exact mechanisms of this process are still not fully understood. Here we present evidence for the involvement of STAT3, a known mTORC1 regulated transcription factor, in this process. We demonstrate that STAT3 promotes the transcription of PTEN by directly binding on the PTEN promoter. Elevated PTEN then inhibits the proliferation of Tsc1−/−or Tsc2−/−cells through down-regulation of Akt signaling. Activation of PTEN in this pathway may thus serve as a protective mechanism against hyper-activated mTORC1 mediated tumorigenesis and contribute to the benign nature of tumors caused by loss of either TSC1 or TSC2.
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影响因子:
5.2
作者:
Orlova KA;Crino PB
通讯作者:
Crino PB
影响因子:
5.3
作者:
Bromberg, JF;Horvath, CM;Darnell, JE
通讯作者:
Darnell, JE
DOI:
10.1083/jcb.200403069
发表时间:
2004-07-19
期刊:
The Journal of cell biology
影响因子:
--
作者:
Harrington LS;Findlay GM;Gray A;Tolkacheva T;Wigfield S;Rebholz H;Barnett J;Leslie NR;Cheng S;Shepherd PR;Gout I;Downes CP;Lamb RF
通讯作者:
Lamb RF
影响因子:
10.5
作者:
Ma, L;Teruya-Feldstein, J;Pandolfi, PP
通讯作者:
Pandolfi, PP
DOI:
10.1126/science.1199498
发表时间:
2011-06-10
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Hsu PP;Kang SA;Rameseder J;Zhang Y;Ottina KA;Lim D;Peterson TR;Choi Y;Gray NS;Yaffe MB;Marto JA;Sabatini DM
通讯作者:
Sabatini DM