相关实验视频
Updated: May 12, 2026
07:56
Bacterial Delivery of RNAi Effectors: Transkingdom RNAi
Published on: August 19, 2010
罗奎因通过限制可诱导的T细胞共刺激剂信使RNA来抑制自身免疫
Di Yu1, Andy Hee-Meng Tan, Xin Hu
1Division of Immunology and Genetics, John Curtin School of Medical Research, The Australian National University, Canberra, 2601, Australia.
Nature
|January 4, 2008
概括
一个新发现的途径通过控制T细胞上可诱导的T细胞共刺激剂 (ICOS) 的水平来防止自身免疫. 罗蛋白降解ICOS信使RNA,其破坏导致狼类自身免疫性疾病.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
背景情况:
- 免疫反应通常通过不完全理解的机制准病原体,而不是自我抗原.
- 当免疫系统错误地攻击身体自己的组织时,自身免疫性就会出现.
研究的目的:
- 通过调节T淋巴细胞共刺激受体来预防自身免疫的新途径.
- 阐明罗蛋白在控制可诱导T细胞共刺激器 (ICOS) 表达的作用.
主要方法:
- 对具有Roquin (Rc3h1) ROQ域突变的sanroque小鼠进行分析.
- 研究由Roquin调节的ICOS信使RNA降解机制.
- 识别ICOS 3'未翻译区域中保存的调节元素及其与microRNAs (如miR-101) 的相互作用.
主要成果:
- 罗金的一个突变导致T细胞上ICOS的表达增加,导致淋巴细胞积累和狼类自身免疫综合征.
- 罗昆促进ICOS信使RNA的降解,这是预防自身免疫的一个关键步骤.
- 在ICOS 3'未翻译的mRNA中,一个特定的区域对于Roquin介导的调节至关重要,涉及microRNA结合.
结论:
- 一个关键的转录后途径涉及罗金和microRNAs调节T淋巴细胞的积累,并防止自身免疫.
- 这一途径的破坏,特别是ICOS调节,可以导致自身免疫性疾病.
- 准ICOS途径为自身免疫性疾病提供了潜在的治疗策略.
相关概念视频
01:23Types of RNA
Overview
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
01:23RNA 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...
01:23RNA 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...
02:30siRNA - 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...
02:15Experimental 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...
01:20Types of RNA
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in regulating gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA Performs Diverse...
RNA Performs Diverse...