Dicer is regulated by cellular stresses and interferons

被引：160
作者：
Wiesen, Jennifer L. [1 ]
Tomasi, Thomas B. [1 ,2 ]
机构：
[1] Roswell Pk Canc Inst, Mol Med Lab, Dept Immunol, Buffalo, NY 14263 USA
[2] SUNY Buffalo, Dept Med & Microbiol & Immunol, Sch Med & Biomed Sci, Buffalo, NY 14214 USA
来源：
MOLECULAR IMMUNOLOGY | 2009年 / 46卷 / 06期
基金：
美国国家卫生研究院;
关键词：
RNAi; MicroRNA; Dicer; Stress; Interferon; HISTONE DEACETYLASE INHIBITOR; TUMOR-CELLS; INDUCED APOPTOSIS; GENE-EXPRESSION; MICRORNAS; RNA; ACETYLATION; ACTIVATION; REPRESSION; INDUCTION;
D O I：
10.1016/j.molimm.2008.11.012
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
The generation of microRNAs is dependent on the RNase III enzyme Dicer, the levels of which vary in different normal cells and in disease states. We demonstrate that Dicer protein expression in JAR trophoblast cells, and several other cell types, was inhibited by multiple stresses including reactive oxygen species, phorbol esters and the Ras oncogene. Additionally, double-stranded RNA and Type I interferons repress Dicer protein in contrast to IFN-gamma which induces Dicer. The effects of stresses and interferons are primarily post-transcriptional. The findings suggest that Dicer is a stress response component and identifies interferons as potentially important regulators of Dicer expression. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1222 / 1228
页数：7
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