一种基于载体的定量蛋白质组学方法,用于在心周液中发现生物标志物
Amanda J Campbell1, Samir Cakar1, Nicolai B Palstrøm2
1Department of Clinical Biochemistry, Odense University Hospital, Odense, Denmark; Center for Clinical Proteomics (CCP), Odense University Hospital, Odense, Denmark.
Molecular & cellular proteomics : MCP
|July 14, 2024
概括
一种新的载体蛋白质组方法显著提高心周液中的蛋白质定量,改善了对2型糖尿病和心力衰竭等心脏病的生物标志物发现.
科学领域:
- 蛋白质组学是指蛋白质组学.
- 生物化学 生物化学
- 心血管研究研究心血管研究
背景情况:
- 液体染色学 (tandem) 质谱面临着在生物流体中量化各种蛋白质度方面的挑战.
- 心周液为全面的蛋白质组分析提供了一个复杂的矩阵.
研究的目的:
- 适应SCoPE (单细胞蛋白质组学) 方法,使用心肌组织载体,以改善心周液中蛋白质的量化.
- 调查2型糖尿病和/或心力衰竭患者心周液中的蛋白质表达特征.
主要方法:
- 适应SCoPE方法,使用心肌组织载体进行心周液分析.
- 载体蛋白质组和患者样本的同质标记,以进行明显的量化.
- 传统的液体色谱协同质谱与载体蛋白质组方法的比较.
主要成果:
- 使用载体方法量化1398种蛋白质,而没有使用载体方法量化265种蛋白质,发现了更高比例的肌心蛋白质.
- 检测到的差异表达蛋白质数量增加了近四倍.
- 途径分析显示,同时存在心力衰竭和2型糖尿病患者的免疫激活,血液凝固和压力途径的丰富.
结论:
- 载体蛋白质组方法在具有挑战性的生物矩阵 (如心周液) 中显著提高了蛋白质定量.
- 这种方法有可能促进心血管疾病中的生物标志物发现.
- 质谱数据通过ProteomeXchange (PXD053450) 提供给公众.
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