综合蛋白质组学和转录组学分析揭示了与不同致病性RBM20变体相关的过早死亡率差异的见解
Zachery R Gregorich1, Eli J Larson2, Yanghai Zhang1
1Department of Animal and Dairy Sciences, University of Wisconsin-Madison, Madison, WI 53706, USA.
Journal of molecular and cellular cardiology
|November 3, 2024
概括
在RNA结合基因蛋白20 (RBM20) 的遗传变异导致扩张性心肌病. 这项研究揭示了不同的RBM20变异如何导致不同的疾病严重程度和分子变化,为RBM20心肌病提供了洞察力.
科学领域:
- 心血管遗传学 心血管遗传学
- 分子生物学分子生物学
- 基因组学就是基因组学.
背景情况:
- RNA结合基因蛋白20 (RBM20) 的变异与严重形式的扩张性心肌病 (DCM) 有关.
- 导致RBM20心肌病的精确分子机制以及患者结果变化的原因尚不清楚.
- 了解这些因素对于开发有针对性的疗法至关重要.
研究的目的:
- 为了研究不同致病性RBM20变体的分子后果.
- 阐明RBM20心肌病中表型异质性背后的机制.
- 提供RBM20变异效应的综合多组学分析.
主要方法:
- 在具有明显RBM20变异 (S639G和S637A) 的小鼠模型中,进行多omics分析,包括转录和蛋白质组学.
- 对基因拼接改变,全球蛋白质表达和基因本体学的分析.
- 变种携带小鼠和野生类型对照之间的表型,心脏重塑和功能障碍的直接比较.
主要成果:
- 具有RBM20 S639G变异的小鼠的过早死亡率高于S637A变异的小鼠,尽管心脏重塑类似.
- 观察到RBM20目标基因和非目标基因的差异拼接,包括与心律失常相关的基因.
- 全球蛋白质组学揭示了与野生类型相比,S639G变体心脏中表达的蛋白质差异更大,这表明线粒体功能障碍更大.
结论:
- 致病性RBM20变体导致明显的分子变化,包括改变的基因拼接和蛋白质表达.
- 这些分子差异有助于在RBM20心肌病中观察到的表型异质性.
- 这项研究为了解RBM20相关心脏病及其可变严重程度提供了详细的分子基础.
相关概念视频
02:24Ribosome Profiling
3.5K
Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
3.5K
01:33Proteomics
7.2K
A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term...
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term...
7.2K