高等学校化学学报 ›› 2024, Vol. 45 ›› Issue (11): 20240285.doi: 10.7503/cjcu20240285

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面向小分子检测的MALDI MS基质研究进展

续红妹1, 王梁臣1, 闵乾昊2()   

  1. 1.山西大学环境科学研究所, 太原 030006
    2.南京大学化学化工学院, 生命分析化学国家重点实验室, 南京 210023
  • 收稿日期:2024-06-13 出版日期:2024-11-10 发布日期:2024-08-30
  • 通讯作者: 闵乾昊 E-mail:minqianhao@nju.edu.cn
  • 基金资助:
    国家自然科学基金(22104075);山西省基础研究计划项目(20210302124014)

Advances in MALDI MS Matrices for the Detection of Small Molecules

XU Hongmei1, WANG Liangchen1, MIN Qianhao2()   

  1. 1.Institute of Environmental Science,Shanxi University,Taiyuan 030006,China
    2.State Key Laboratory of Analytical Chemistry for Life Science,School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210023,China
  • Received:2024-06-13 Online:2024-11-10 Published:2024-08-30
  • Contact: MIN Qianhao E-mail:minqianhao@nju.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(22104075);the Applied Basic Research Project of Shanxi Province, China(20210302124014)

摘要:

低分子量化合物的分析与鉴定对于追踪药物分布和探究生物体内不同的代谢途径至关重要. 基质辅助激光解吸电离质谱(MALDI MS)在生物分子分析方面发挥着重要作用, 但是传统的有机基质自身电离产生的碎片信号会对小分子检测造成干扰, 且基质与样品结晶的不均匀性也严重影响信号的重复性和成像的空间分辨率. 为了克服这些问题, 研究者们开发了一系列适用于小分子检测的基质. 本文介绍了用于小分子检测的MALDI MS基质开发的研究进展, 主要包括去质子化基质、 改性商业化基质、 高分子量有机基质、 反应性基质和纳米材料基质, 并对新型的MALDI MS基质的适用范围与应用领域进行了总结和展望.

关键词: 基质辅助激光解吸电离, 质谱成像, 小分子检测

Abstract:

The analysis of small molecules is of great interest to profile the distribution of small pharmaceutical drugs rapidly, or to trace and understand metabolic pathways. Matrix-assisted laser desorption/ionization mass spectrometry(MALDI MS) plays a central role in the analysis of biological molecules. However, its application for analysis of low molecular weight compounds is restricted by conventional organic matrices interferences in the low m/z region. In addition, inhomogeneity of matrix and sample crystals also impedes the detection repeatability and imaging spatial resolution. Several strategies regarding matrices preparation and functionalization have been investigated to overcome this problem. This review gives an overview on the rational design strategies used to develop matrix systems for the analysis of small molecules, focusing on the exploration of deprotonating matrices, modified conventional matrices, high molecular weight organic matrices, reactive matrices, and nanomaterial-based matrices. In final, the design and application of the new matrices for mass spectrometry analysis of small molecules are summarized and prospected.

Key words: Matrix-assisted laser desorption ionization, Mass spectrometry imaging, Analysis of small molecule

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