RNA homeostasis governed by cell type-specific and branched feedback loops acting on NMD.

RNA homeostasis governed by cell type-specific and branched feedback loops acting on NMD.
复制标题

DOI:
10.1016/j.molcel.2011.06.031
复制
发表时间:
2011-09-16
期刊:
影响因子:
16
通讯作者:
Wilkinson MF
Wilkinson MF
中科院分区:
生物学1区
文献类型:
--
作者:
Huang L;Lou CH;Chan W;Shum EY;Shao A;Stone E;Karam R;Song HW;Wilkinson MF

文献摘要

参考文献

被引文献

相似文献

无义介导的mRNA衰变(NMD)是一种保守的RNA衰变途径,降解异常mRNA并直接调节许多正常mRNA。NMD的这种双重作用提高了这样一种可能性,即它的大小被缓冲,以防止如果NMD受到环境或遗传损伤的干扰,则可能发生的基因表达的潜在灾难性改变。为了支持这一点,在这里,我们报告存在一个负反馈调节网络,直接作用于七个NMD因素。反馈调节由NMD途径的不同分支以细胞类型特异性和发育调节的方式赋予。我们确定反馈调节NMD的因素,是速率限制NMD和证明,逆转反馈调节响应NMD扰动是至关重要的,以维持NMD。总之,我们的研究结果表明,存在一个复杂的反馈网络,维持RNA监视和哺乳动物细胞中正常基因表达的稳态。
Nonsense-mediated mRNA decay (NMD) is a conserved RNA decay pathway that degrades aberrant mRNAs and directly regulates many normal mRNAs. This dual role for NMD raises the possibility that its magnitude is buffered to prevent the potentially catastrophic alterations in gene expression that would otherwise occur if NMD were perturbed by environmental or genetic insults. In support of this, here we report the existence of a negative feedback regulatory network that directly acts on seven NMD factors. Feedback regulation is conferred by different branches of the NMD pathway in a cell type-specific and developmentally regulated manner. We identify feedback-regulated NMD factors that are rate limiting for NMD and demonstrate that reversal of feedback regulation in response to NMD perturbation is crucial for maintaining NMD. Together, our results suggest the existence of an intricate feedback network that maintains both RNA surveillance and the homeostasis of normal gene expression in mammalian cells.
DOI: 10.1038/nature09158
发表时间: 2010-07-22
期刊: Nature
影响因子: 64.8
作者:
通讯作者: --
DOI: 10.1038/nsmb1081
发表时间: 2006-05-01
影响因子: 16.8
作者:
Bühler, M;Steiner, S;Mühlemann, O
通讯作者: Mühlemann, O
DOI: 10.1038/nature03060
发表时间: 2004-11-04
期刊: NATURE
影响因子: 64.8
作者:
Amrani, N;Ganesan, R;Jacobson, A
通讯作者: Jacobson, A
DOI: 10.1016/j.molcel.2004.05.005
发表时间: 2004-06-04
期刊: MOLECULAR CELL
影响因子: 16
作者:
Brumbaugh, KM;Otterness, DM;Abraham, RT
通讯作者: Abraham, RT
DOI: 10.1016/s1097-2765(03)00446-5
发表时间: 2003-12-01
期刊: MOLECULAR CELL
影响因子: 16
作者:
He, F;Li, XR;Jacobson, A
通讯作者: Jacobson, A