单细胞原生质谱仪用于现场检测活细胞中的蛋白质药物复合体

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Updated: Feb 19, 2026

Analyzing Protein Architectures and Protein-Ligand Complexes by Integrative Structural Mass Spectrometry

Analyzing Protein Architectures and Protein-Ligand Complexes by Integrative Structural Mass Spectrometry

Published on: October 15, 2018

Noa Suzuki¹, Yuko Inatomi², Waka Sakamoto¹

¹Graduate School of Medical Life Science, Yokohama City University, 1-7-29 Suehiro-Cho, Tsurumi-Ku, Yokohama, Kanagawa 230-0045, Japan.

Journal of the American Chemical Society

|February 17, 2026

概括

单细胞原生质谱现在可以检测活细胞中的蛋白质药物复合体. 这一进步使用P2A联结器策略来改善蛋白质表达和分析,帮助药物发现.

科学领域:

生物化学生物化学
细胞生物学细胞生物学
分析化学分析化学

背景情况:

单细胞原生质谱 (MS) 提供了对细胞事件的敏感的现场分析.
检测单个细胞内的蛋白质药物相互作用对于药理学至关重要.

研究的目的:

开发和验证一种单细胞原生MS方法,用于在活人细胞中直接检测蛋白质药物复合体.
为了克服在互动研究中检测低丰度蛋白质方面的挑战.

主要方法:

已建立的单细胞原生MS用于在HEK293T细胞中增强绿色光蛋白 (EGFP) 检测.
使用P2A链策略对EGFP和Sirtuin 2基因组脱乙酶域 (SIRT2 HDAC) 的联合表达.
分析了蛋白质表达水平,并在单个活细胞内确定了蛋白质-药物复杂离子.

主要成果:

在使用本地MS的单细胞中成功检测出EGFP.
通过P2A联合表达克服了融合EGFP-SIRT2HDAC蛋白的低表达问题.
对两种蛋白质实现了多重电荷离子的明确识别,并在单个活细胞中观察到SIRT2 HDAC药物复合体离子.

结论:

开发的平台可以使用本地MS直接检测单个活细胞中的蛋白-药物复合体.
这种方法为在原生细胞环境中表征蛋白质药物相互作用提供了一种变革性的方法.
潜在的应用包括细胞循环解决的药理学和推进药物发现.

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