let-7-repressesed Shc translation delays replicative senescence.

let-7-repressesed Shc translation delays replicative senescence.
复制标题

let-7-抑制的Shc翻译延迟复制衰老

DOI:
10.1111/acel.12176
复制
发表时间:
2014-02
期刊:
影响因子:
7.8
通讯作者:
Wang W
Wang W
中科院分区:
生物学1区
文献类型:
--
作者:
Xu F;Pang L;Cai X;Liu X;Yuan S;Fan X;Jiang B;Zhang X;Dou Y;Gorospe M;Wang W

文献摘要

参考文献

被引文献

相似文献

P66Shc接头蛋白是哺乳动物寿命的重要调节因子,但其机制尚不清楚。在这里,我们证明了p66Shc、p52Shc和p46Shc的表达是由microRNA let-7a在转录后水平上调节的。Let-7a水平与Shc蛋白水平呈负相关,但不影响Shc mRNA水平。我们在Shc基因的编码区发现了‘无核’let-7a相互作用元件;‘无核’相互作用位点的突变取消了let-7a对Shc的调控。我们的结果进一步表明,let-7a抑制Shc的表达可以延缓人二倍体成纤维细胞(HDFS)的衰老。总之,我们的发现将let-7a的丰度与p66Shc的表达联系起来,p66Shc反过来控制HDFS的复制寿命。
The p66Shc adaptor protein is an important regulator of lifespan in mammals, but the mechanisms responsible are still unclear. Here, we show that expression of p66Shc, p52Shc, and p46Shc is regulated at the post-transcriptional level by the microRNA let-7a. The levels of let-7a correlated inversely with the levels of Shc proteins without affecting Shc mRNA levels. We identified ‘seedless’ let-7a interaction elements in the coding region of Shc mRNA; mutation of the ‘seedless’ interaction sites abolished the regulation of Shc by let-7a. Our results further revealed that repression of Shc expression by let-7a delays senescence of human diploid fibroblasts (HDFs). In sum, our findings link let-7a abundance to the expression of p66Shc, which in turn controls the replicative lifespan of HDFs.
DOI: 10.1016/s0959-437x(00)00146-5
发表时间: 2000-12-01
影响因子: 4
作者:
Luzi, L;Confalonieri, S;Pelicci, PG
通讯作者: Pelicci, PG
DOI: 10.1158/0008-5472.can-07-2462
发表时间: 2007-10-15
期刊: CANCER RESEARCH
影响因子: 11.2
作者:
Sampson, Valerie B.;Rong, Nancy H.;Krueger, Leslie J.
通讯作者: Krueger, Leslie J.
DOI: 10.1038/sj.onc.1205513
发表时间: 2002-05-30
期刊: ONCOGENE
影响因子: 8
作者:
Trinei, M;Giorgio, M;Pelicci, PG
通讯作者: Pelicci, PG
DOI: 10.1083/jcb.201009094
发表时间: 2011-02-21
期刊: The Journal of cell biology
影响因子: --
作者:
Rodier F;Campisi J
通讯作者: Campisi J
Iet-7调节乳腺癌细胞的自我更新和致瘤性
DOI: 10.1016/j.cell.2007.10.054
发表时间: 2007-12-14
期刊: CELL
影响因子: 64.5
作者:
Yu, Fengyan;Yao, Herui;Song, Erwei
通讯作者: Song, Erwei