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首页> 外文期刊>Cancer Cell >A negative feedback signaling network underlies oncogene-induced senescence.
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A negative feedback signaling network underlies oncogene-induced senescence.

机译:负反馈信号网络是致癌基因诱导衰老的基础。

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摘要

Oncogene-induced senescence functions to limit tumor development. However, a complete understanding of the signals that trigger this type of senescence is currently lacking. We found that mutations affecting NF1, Raf, and Ras induce a global negative feedback response that potently suppresses Ras and/or its effectors. Moreover, these signals promote senescence by inhibiting the Ras/PI3K pathway, which can impact the senescence machinery through HDM2 and FOXO. This negative feedback program is regulated in part by RasGEFs, Sprouty proteins, RasGAPs, and MKPs. Moreover, these signals function in vivo in benign human tumors. Thus, the ultimate response to the aberrant activation of the Ras pathway is a multifaceted negative feedback signaling network that terminates the oncogenic signal and participates in the senescence response.
机译:癌基因诱导的衰老功能限制了肿瘤的发展。但是,目前尚缺乏对触发此类衰老的信号的完整理解。我们发现,影响NF1,Raf和Ras的突变会诱导全局负反馈响应,从而有效抑制Ras和/或其效应物。此外,这些信号通过抑制Ras / PI3K途径促进衰老,这可能通过HDM2和FOXO影响衰老机制。此负反馈程序部分受RasGEF,Sprouty蛋白,RasGAP和MKP的调节。而且,这些信号在人的良性肿瘤中在体内起作用。因此,对Ras途径异常激活的最终反应是一个多方面的负反馈信号网络,该网络终止致癌信号并参与衰老反应。

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