与ALS相关的RNA结合蛋白通过REST下调促进UNC13A转录
Yasuaki Watanabe1,2, Naoki Suzuki3,4, Tadashi Nakagawa5,6
1Department of Neurology, Graduate School of Medicine, Tohoku University, Sendai, Miyagi, 980-8575, Japan. yasuaki.watanabe.b8@tohoku.ac.jp.
The EMBO journal
|July 24, 2025
概括
四种RNA结合蛋白 (RBPs) 通过向REST来调节UNC13A的表达,REST是肌缩侧面硬化症 (ALS) 病原发生的一个关键过程. 这一发现为ALS,一种运动神经元疾病提供了新的治疗点.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 遗传学 遗传学是一种遗传学.
背景情况:
- 肌缩侧面硬化症 (ALS) 是一种神经退行性疾病,涉及运动神经元的损失.
- 现有研究强调了TDP-43在稳定UNC13AmRNA中的作用.
- 复杂的ALS病理生理学仍然不完全理解.
研究的目的:
- 研究RNA结合蛋白 (RBPs) MATR3,FUS和hNRNPA1在调节UNC13A表达中的作用.
- 阐明这些RBP通过REST影响UNC13A转录的机制.
- 探索这些发现对ALS病原和潜在疗法的影响.
主要方法:
- 使用iPSC衍生的运动神经元进行细胞培养实验.
- 对与REST mRNA的RNA结合蛋白相互作用的分析.
- 在细胞和患者衍生模型中评估REST和UNC13A表达水平.
主要成果:
- MATR3,FUS和hnRNPA1通过准REST.被确定为UNC13A表达的调节者.
- 这些RBP下调REST mRNA,从而促进UNC13A转录.
- 这些RBP的损失导致ALS模型和患者运动神经元的REST过度表达.
结论:
- 这些发现揭示了四个RBPs (TDP-43,MATR3,FUS,hnRNPA1) 参与调节UNC13A表达的融合机制.
- 这条通路对突触完整性至关重要,并与ALS病变发生有关.
- 针对这个RBP-REST-UNC13A轴可能为ALS提供新的治疗策略.
相关概念视频
RNA Polymerase II Accessory Proteins
9.5K
Proteins that regulate transcription can do so either via direct contact with RNA Polymerase or through indirect interactions facilitated by adaptors, mediators, histone-modifying proteins, and nucleosome remodelers. Direct interactions to activate transcription is seen in bacteria as well as in some eukaryotic genes. In these cases, upstream activation sequences are adjacent to the promoters, and the activator proteins interact directly with the transcriptional machinery. For example, in...
9.5K
Types of RNA
6.4K
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...
6.4K
Translational Regulation
98
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,...
98
RNA Stability
33.9K
Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
33.9K
siRNA - Small Interfering RNAs
17.0K
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...
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...
17.0K
Co-activators and Co-repressors
7.5K
Gene transcription is regulated by the synergistic action of several proteins that form a complex at a gene regulatory site. This is observed in eukaryotes, where the regulation of gene expression is a complex process. Regulatory proteins in eukaryotes can broadly be classified into two types – regulators that bind directly to specific DNA sequences and co-regulators that associate with regulatory proteins but cannot directly bind to the DNA. These co-regulators are further divided into...
7.5K


