小RNA和托尔类受体相互作用:起源和疾病机制
Jiancheng Yu1, Xudong Zhang2, Chen Cai2
1Department of Human Genetics, University of Utah School of Medicine, Salt Lake City, UT, USA; Molecular Medicine Program, University of Utah School of Medicine, Salt Lake City, UT, USA.
Trends in biochemical sciences
|February 16, 2025
概括
多种小型非编码RNAs (sncRNAs) 激活托尔类受体7和8 (TLR7/8),启动自身免疫的循环. 这一发现为自身免疫性疾病提供了新的治疗点.
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 是一个遗传学.
背景情况:
- 越来越多地识别了超出微RNA (miRNA) 的小型非编码RNA (sncRNA).
- 这些来自tRNA,rRNA,snRNA和YRNA的sncRNA具有独特的修饰和功能.
- 新出现的证据表明,sncRNAs可以与托尔类受体 (TLRs) 相互作用,特别是TLR7和TLR8.
研究的目的:
- 探索各种sncRNAs在免疫激活和自身免疫中的作用.
- 提出一种机制来解释sncRNA如何促进自身免疫性疾病的发展和延续.
- 突出sncRNA-TLR相互作用在理解自身免疫病原发生的重要性.
主要方法:
- 分析小RNA测序数据以识别多种不同的sncRNAs.
- 研究sncRNA与托尔类受体7和8 (TLR7/8) 的相互作用.
- 开发了顺序激活假设来解释sncRNA介导的自身免疫.
主要成果:
- 通过特定的序列,修饰和结构,sncRNAs可以参与TLR7/8的作用,其功能超出了RNA干扰的范围.
- 序列激活假设认为,异常的sncRNAs触发TLR7/8,导致自身抗体的产生和免疫激活的自我维持周期.
- X染色体局部化和TLR7/8的性别偏差表达可能解释了女性自身免疫性疾病的流行.
结论:
- 在自身免疫性疾病的发展中,sncRNA-TLR相互作用代表了一条新的途径.
- 了解这种途径对于开发向免疫疗法至关重要.
- 这些发现为调查自身免疫性疾病的病因提供了新的框架.
更多相关视频
12:43Monitoring Activation of the Antiviral Pattern Recognition Receptors RIG-I And PKR By Limited Protease Digestion and Native PAGE
Published on: July 29, 2014
12.1K
09:51Screening Bioactive Nanoparticles in Phagocytic Immune Cells for Inhibitors of Toll-like Receptor Signaling
Published on: July 26, 2017
12.3K
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...
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...
01:29Translational Regulation
Translational regulation in prokaryotes ensures efficient protein synthesis by controlling ribosome access to mRNA. This regulation is mediated by secondary RNA structures, including translational riboswitches, RNA thermometers, and small RNAs (sRNAs), which respond to intracellular and environmental signals to modulate gene expression.Translational RiboswitchesRiboswitches in the leader region of mRNAs can regulate translation by altering the accessibility of the Shine-Dalgarno (SD) sequence,...