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通过快速直角分离和同位素解析质谱法对脂体进行深度分析

Tian Xia¹, Feng Zhou², Donghui Zhang³

¹MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, 100084, Beijing, China.

Nature communications

|July 17, 2023

概括

这项研究引入了一种新的水友互动液体染色学捕获离子移动性光谱法 (HILIC-TIMS) 方法,用于精确的脂质异构体分析. 该技术增强了脂质组分析,揭示了对脂质代谢和疾病状态的新见解.

科学领域:

利皮多米克 (Lipidomics) 是一种消化剂.
分析化学分析化学
生物化学生物化学

背景情况:

脂类学涉及分析数千种脂类物种,其中许多是异构体和异构体.
传统的液体染色学-并联质谱学 (LC-MS/MS) 难以区分这些脂质异构体.
准确的脂质异构体识别对于了解脂质代谢和疾病至关重要.

研究的目的:

开发一种先进的分析方法来区分脂质异构体.
为了使脂的详细结构分析,包括双键和sn-position.
改进生物和临床应用的脂质学分析.

主要方法:

使用水友互动液态色谱 (HILIC) 和被困离子运动谱 (TIMS) 进行直角分离.
将同位素解析的MS/MS方法集成到HILIC-TIMS平台上.
采用一个定制软件,LipidNovelist,用于简化数据分析.

主要成果:

实现具有高灵敏度 (nM检测极限) 和速度 (每次运行<10分钟) 的脂的异构分辨率分析.
在牛肝样本中的脂覆盖率翻倍,并在巨细胞中确定新的脱路径.
证明异构体分析在区分人类膀癌组织与正常对照中的实用性.

结论:

在HILIC-TIMS系统提供了一个全面的解决方案,以异构分离的脂质组概况.
这种方法显著提高了对健康和疾病中的脂质代谢的理解.
对同位素特定的脂质分析对于准确的表型和生物标志物发现至关重要.

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