An epigenetic switch involving NF-kappaB, Lin28, Let-7 MicroRNA, and IL6 links inflammation to cell transformation.
An epigenetic switch involving NF-kappaB, Lin28, Let-7 MicroRNA, and IL6 links inflammation to cell transformation.
复制标题
涉及NF-kappab,Lin28,Let-7 microRNA和IL6的表观遗传开关将炎症与细胞转化联系起来。
DOI:
10.1016/j.cell.2009.10.014
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发表时间:
2009-11-13
期刊:
影响因子:
64.5
通讯作者:
Struhl K
中科院分区:
文献类型:
--
作者:
Iliopoulos D;Hirsch HA;Struhl K
Inflammation is linked clinically and epidemiologically to cancer, and NF-κB appears to play a causative role, but the mechanisms are poorly understood. We show that transient activation of Src oncoprotein can mediate an epigenetic switch from immortalized breast cells to a stably transformed line that forms self-renewing mammospheres that contain cancer stem cells. Src activation triggers an inflammatory response mediated by NF-κB that directly activates Lin28 transcription and rapidly reduces let-7 microRNA levels. Let-7 directly inhibits IL6 expression, resulting in higher levels of IL6 than achieved by NF-κB activation. IL6-mediated activation of the STAT3 transcription factor is necessary for transformation, and IL6 activates NF-κB, thereby completing a positive feedback loop. This regulatory circuit operates in other cancer cells lines, and its transcriptional signature is found in human cancer tissues. Thus, inflammation activates a positive feedback loop that that maintains the epigenetic transformed state for many generations in the absence of the inducing signal.
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影响因子:
10.5
作者:
Dontu, G;Abdallah, WM;Wicha, MS
通讯作者:
Wicha, MS
影响因子:
64.8
作者:
Lu, J;Getz, G;Golub, TR
通讯作者:
Golub, TR
影响因子:
8
作者:
Niu, GL;Wright, KL;Yu, H
通讯作者:
Yu, H
影响因子:
56.9
作者:
Mayr, Christine;Hemann, Michael T.;Bartel, David P.
通讯作者:
Bartel, David P.
DOI:
10.1186/bcr2106
发表时间:
2008
期刊:
Breast cancer research : BCR
影响因子:
--
作者:
Grimshaw MJ;Cooper L;Papazisis K;Coleman JA;Bohnenkamp HR;Chiapero-Stanke L;Taylor-Papadimitriou J;Burchell JM
通讯作者:
Burchell JM