非定向蛋白质组学能够在线粒体和其他罕见疾病中实现超快速变异优先级
Daniella H Hock1,2,3, Nikeisha J Caruana4,5, Liana N Semcesen4
1Department of Biochemistry and Pharmacology, Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC, 3010, Australia. daniella.hock@unimelb.edu.au.
Genome medicine
|May 21, 2025
概括
基于质谱的蛋白质组学为罕见遗传疾病提供了强大的,无病的功能测试. 这种非向蛋白质组学管道有助于诊断线粒体疾病和其他罕见疾病,改善变体解释和患者护理.
科学领域:
- 基因组学和蛋白质组学
- 罕见疾病的诊断 罕见疾病的诊断
- 分子生物学分子生物学
背景情况:
- 基因组测试只能在一半的罕见病患者中确诊.
- 缺乏功能性测试阻碍了变种病原性评估,特别是对于RNA测序耐火变种.
- 准确的基因诊断对于适当的护理,生殖信心和避免不必要的干预至关重要.
研究的目的:
- 为罕见疾病诊断开发和验证基于非向质谱的蛋白质组学管道.
- 评估蛋白质组学作为一种用于变异性致病性的功能测试的性能,特别是在线粒体疾病中.
- 为了证明蛋白质组学在诊断罕见遗传疾病方面的疾病不可知应用性.
主要方法:
- 开发了一种非向的质谱蛋白质组学管道,以量化>50%的门德尔病基因中的蛋白质.
- 来自90多名患者的外周血液单核细胞 (PBMC),包括未被诊断的罕见病患者和对照组,进行了分析.
- 蛋白质组学数据与已建立的呼吸链酶学进行了基准测试,以评估性能.
主要成果:
- 蛋白质组学测试在83%的确诊线粒体疾病病例中支持变异性致病性,超过了酶学.
- 开发的生物信息工具使得蛋白质组学数据中线粒体功能障碍的高可靠性识别成为可能.
- 在未被诊断的个体中进行了六项额外的诊断,包括线粒体光谱障碍,展示了蛋白质组学的疾病诊断实用性.
- 使用PBMC实现了超快速基因组测序变体解释的快速数据返回 (最快54小时).
结论:
- 介绍了将非向蛋白质组学整合到罕见遗传疾病的常规诊断中的框架.
- 这种方法为功能变异验证提供了一个范式转变,使得临床可行的时间表成为可能.
- 该研究强调蛋白质组学是诊断线粒体和潜在的其他罕见遗传疾病的强大工具.
相关概念视频
Proteomics
7.1K
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...
7.1K
Mitochondrial Protein Sorting
4.2K
Mitochondria are double-membrane organelles of the eukaryotes involved in cellular metabolism, signaling, ATP synthesis, and programmed cell death. Each of these processes requires specific proteins and enzymes that must be correctly sorted to the right mitochondrial subcompartment for the proper functioning of the organelle.
Most of these mitochondrial proteins are encoded by the nucleus and imported to the mitochondria as unfolded or loosely folded precursors. Mitochondrial precursors...
Most of these mitochondrial proteins are encoded by the nucleus and imported to the mitochondria as unfolded or loosely folded precursors. Mitochondrial precursors...
4.2K


