加快共价结合研究:使用声弹和TOF-MS进行直接质量转移测量
Markus Stoeckli1, Han Wang2, Dieter Staab1
1Novartis Pharma AG, Biomedical Research, Novartis Campus, Switzerland.
SLAS technology
|October 25, 2024
概括
这项研究引入了一种更快的方法来跟踪使用声弹和质谱的化学反应,使化合物-蛋白质结合的实时分析,而不需要漫长的样本准备. 这一创新显著提高了药物发现的测试吞吐量.
科学领域:
- 分析化学 分析化学
- 生物化学 生物化学
- 质谱测量质量谱测量
背景情况:
- 追踪化学反应的传统方法,如液态色谱-质谱法 (LC-MS),由于缓冲器不兼容,需要进行大量的样品预处理 (脱盐).
- 这一预处理步骤耗时,每个样本的分析时间从几秒到几分钟不等,限制了总体检测吞吐量和广泛适用性.
- 直接质谱 (MS) 注射对于更快的分析是可取的,但由于现有测试中的缓冲器不兼容性而受到阻碍.
研究的目的:
- 开发和验证一个精简的工作流程,用于实时测量共价结合动力学.
- 为了克服化学反应监测的传统LC-MS方法的吞吐量限制.
- 为了证明应用一种新的声弹射 (AE) 接口与飞行时间质谱仪 (MS) 结合用于直接样本分析的应用.
主要方法:
- 集成声弹射 (AE) 接口与飞行时间质谱仪 (MS) 进行直接样本引入.
- 开发一个完整的工作流程,包括测试设置,样本分析和对共价结合研究的数据评估.
- 使用SCIEX Echo® MS+系统与ZenoTOF 7600系统进行对共价结合的动力分析.
主要成果:
- 该AE-MS系统能够以每秒一个样本的速度直接注入样本,与传统方法相比,大大缩短了分析时间.
- 成功建立了一个完整的工作流程,用于实时测量化合物与蛋白质的共价结合.
- 这是SCIEX Echo® MS+系统与ZenoTOF 7600系统一起用于研究共价结合动力学的首次报告使用.
结论:
- 将声弹射与飞行时间质谱学相结合,为监测化学反应,特别是共价结合提供了直接的,高通量替代方案.
- 开发的工作流消除了对样品预处理的需求,大大加快了分析,并使实时运动研究成为可能.
- 由于其速度和效率,这种技术进步有望在药物发现和化学生物学研究中得到更广泛的应用.
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