使用多段喷雾-毛细血管CE-MS对图形图级复杂样品的高通量上下蛋白质组分析
Zhitao Zhao1, Yanting Guo1, Kellye A Cupp-Sutton2
1Department of Chemistry and Biochemistry, University of Oklahoma, 101 Stephenson Parkway, Norman, Oklahoma 73019, United States.
Analytical chemistry
|October 1, 2025
概括
这项研究通过将多段样本注射与喷雾毛细血管毛细血管电泳质谱学 (CE-MS) 整合,增强了自上而下的蛋白质组学. 这提高了分析质量有限样本 (如单细胞) 的吞吐量.
科学领域:
- 蛋白质组学是指蛋白质组学.
- 分析化学 分析化学
- 生物技术是生物技术.
背景情况:
- 在质量有限的样本中,自上而下的蛋白质组对于PTM调节的细胞功能至关重要.
- 与LC相比,毛细管电泳 (CE) 为蛋白质组学提供了高分辨率,灵敏度和速度.
- 之前的工作引入了喷雾毛细管用于超低体积CE-MS分析.
研究的目的:
- 为了提高质量有限的上下蛋白质组的吞吐量.
- 为了将多段样本注射与喷雾毛细血管CE-MS平台集成.
- 为了使蛋白质形式的高通量定量分析.
主要方法:
- 开发了用于喷雾毛细管CE-MS的多段样本注射.
- 优化了样品插头之间的间距,以实现基线分离.
- 使用ESI辅助设备进行定量超低体积采样.
- 对*大肠杆菌*溶解酸进行了定量分析.
主要成果:
- 在单个CE-MS运行中实现了多个蛋白质样本的基线分离.
- 量化 *大肠杆菌* 溶解物 (10-250 pg) 具有强烈的线性 (R2 > 0.98).
- 支持每次运行最多17个样本段 (约. 90分钟) 的时间.
结论:
- 优化的平台显著提高了质量有限的自上而下的蛋白质组的吞吐量.
- 每天可以分析数百个质量有限的样本 (例如单细胞).
- 代表了定量蛋白质组分析的重大进步.
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