相关实验视频
Updated: Jul 11, 2026

09:40
RNAi Screening to Identify Postembryonic Phenotypes in C. elegans
Published on: February 13, 2012
在C. elegans中,系统性RNAi需要假设的SID-1跨膜蛋白
William M Winston1, Christina Molodowitch, Craig P Hunter
1Department of Molecular and Cellular Biology, Harvard University, 16 Divinity Avenue, Cambridge, MA 02138, USA.
概括
在C. elegans中,双链RNA干扰 (RNAi) 在细胞之间传播基因沉默信息. 该SID-1蛋白对于这种全身RNAi传播至关重要,细胞自主作用.
科学领域:
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
- 发展生物学 发展生物学
背景情况:
- 双链RNA介导基因干扰 (RNAi) 是抑制线虫Caenorhabditis elegans中的基因表达的强大工具.
- 系统性RNAi允许基因沉默在整个生物体中传播,但细胞之间的信息传输机制仍然不清楚.
研究的目的:
- 研究细胞和分子机制,这些机制是C. elegans中RNAi沉默信号的系统传输的基础.
- 确定涉及RNAi效应细胞间传播的遗传位置.
主要方法:
- 用于可视化系统性RNAi的C. elegans菌株的构建.
- 基因查以确定系统性RNA干扰缺陷 (侧) 突变物.
- 确定基因的分子特征,包括基因克隆和蛋白质定位研究.
主要成果:
- 识别了几种需要用于RNAi系统传播的侧位点.
- sid-1位点编码了一个保存的跨膜蛋白,SID-1.
- SID-1在RNAi敏感细胞中表达,局限于细胞外围,并以细胞自主功能调解全身RNAi.
结论:
- 在C. elegans的系统性RNAi期间,SID-1蛋白在基因沉默信息的细胞间传输中起着至关重要的作用.
- SID-1 是负责在组织之间传播RNAi效应的途径的关键组成部分.
相关概念视频
RNA Interference
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
RNA Interference
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
siRNA - Small Interfering RNAs
Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the ATP-dependent...
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the ATP-dependent...
piRNA - Piwi-interacting RNAs
PIWI-interacting RNAs, or piRNAs, are the most abundant short non-coding RNAs. More than 20,000 genes have been found in humans that code for piRNAs while only 2000 genes have been found for miRNAs. piRNAs can act at the transcriptional and post-transcriptional levels and have a vital role in silencing transposable elements present in germ cells. They are also involved in epigenetic silencing and activation. Previously, they were thought to function only in germ cells but new evidence suggests...
Experimental RNAi
RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...
Small interfering RNAs (siRNA)
Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the ATP-dependent...
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the ATP-dependent...

