首页> 外文期刊>Trends in Microbiology >Small RNAs and the control of transposons and viruses in Drosophila
【24h】

Small RNAs and the control of transposons and viruses in Drosophila

机译:果蝇中的小RNA以及转座子和病毒的控制

获取原文
获取原文并翻译 | 示例
           

摘要

RNA interference (RNAi) - post-transcriptional gene silencing guided by small interfering RNA (siRNA) - is an important antiviral defense mechanism in insects and plants. Several recent studies in Drosophila identified endogenous siRNAs corresponding to transposons, to structured cellular transcripts and to overlapping convergent transcripts. In addition, one of these studies detected a large pool of Argonaute-2 associated siRNAs that mapped to the genome of flock house virus, a (+) RNA virus. Our bioinformatic analyses indicate that these viral siRNAs mapped in roughly equal proportions to both (+) and (-) viral RNA strands. These reports attribute an important function to RNAi in the defense against parasitic nucleic acids (viruses and transposable elements) and provide a novel mechanism for RNAi-based regulation of cellular gene expression. Furthermore, the detection of viral siRNAs of both (+) and (-) polarity implicates double-stranded RNA replication intermediates as the Dicer substrates that mediate antiviral defense.
机译:RNA干扰(RNAi)-由小干扰RNA(siRNA)引导的转录后基因沉默-是昆虫和植物中重要的抗病毒防御机制。果蝇中的一些最新研究鉴定了与转座子,结构化细胞转录物和重叠会聚转录物相对应的内源性siRNA。此外,其中一项研究检测到大量与Argonaute-2相关的siRNA,这些siRNA定位于禽舍病毒(一种+ RNA病毒)的基因组。我们的生物信息学分析表明,这些病毒siRNA与(+)和(-)病毒RNA链的比例大致相等。这些报道归因于RNAi在抵抗寄生核酸(病毒和转座因子)方面的重要功能,并为基于RNAi的细胞基因表达调控提供了新的机制。此外,对(+)和(-)极性的病毒siRNA的检测都涉及双链RNA复制中间体,作为介导抗病毒防御的Dicer底物。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号