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使用并行积累-串行碎片化 (PASEF) 的高灵敏度蛋白质组的可访问的工作流.

Patricia Skowronek1, Georg Wallmann1, Maria Wahle1

  • 1Department Proteomics and Signal Transduction, Max Planck Institute of Biochemistry, Martinsried, Germany.

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概括
此摘要是机器生成的。

本研究提出了一种简化的蛋白质组分析协议,使用Evosep One染色学和timsTOF质谱学,并行积累-串行碎片化 (PASEF) 和数据独立获取 (DIA) 进行例行,深入的细胞分析.

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科学领域:

  • 蛋白质组学是指蛋白质组学.
  • 质谱测量质量谱测量
  • 生物化学 生物化学

背景情况:

  • 深度蛋白质组分析对于了解细胞功能和疾病至关重要.
  • 目前用于常规蛋白质组分析的方法缺乏深度和准确性.
  • 高性能质谱是促进蛋白质原子洞察力的关键.

研究的目的:

  • 为深入的蛋白质组分析开发一个强大且常规的协议.
  • 为广泛的社区使用结合色谱和质谱平台.
  • 在蛋白质组学研究中优化定量准确性,特异性和灵敏性的参数.

主要方法:

  • 使用Evosep One色谱,预先形成的梯度和以尖端为基础的样品准备.
  • 采用被困离子移动性飞行时间质谱仪 (timsTOF),并行积累-串行碎片化 (PASEF) 和数据独立获取 (DIA).
  • 使用py_diAID工具优化PASEF和DIA方法参数,包括质量到电荷和离子移动空间的隔离窗口.

主要成果:

  • 通过21分钟的注射,在人类癌症细胞系中实现了7000种蛋白质的可重复量化.
  • 在富含的四倍复制物中鉴定了29,000个酸.
  • 使用Synchro-PASEF扫描模式与光谱或AlphaDIA分析证明了高量的可重复性.

结论:

  • 该协议能够以高精度和灵敏度进行常规,深入的蛋白质组覆盖.
  • 联合Evosep One和timsTOF PASEF/DIA方法显著提高了蛋白质组分析的效率.
  • 这种方法为生物项目提供了成本高效和时间高效的解决方案,需要最小的动手时间.