Chemical Tagging Assisted Mass Spectrometry Analysis Enables Sensitive Determination of Phosphorylated Compounds in a Single Cell
作者:Fei-Long Liu、Tian-Tian Ye、Jiang-Hui Ding、Xiao-Ming Yin、Xiao-Ke Yang、Wei-Hua Huang、Bi-Feng Yuan、Yu-Qi Feng
DOI:10.1021/acs.analchem.1c00915
日期:2021.5.4
challenging to interrogate polar phosphorylated metabolites and compounds from biological samples. Liquid chromatography–mass spectrometry (LC/MS) now plays a central role in metabolomic studies. However, LC/MS-based approaches have been hampered by the issues of the low ionization efficiencies, low in vivo concentrations, and less chemical stability of polar phosphorylated metabolites. In this work,
极性磷酸化代谢物参与多种生物过程,并在能量代谢,辅因子再生和核酸合成中发挥重要作用。然而,询问来自生物样品的极性磷酸化代谢产物和化合物通常具有挑战性。液相色谱-质谱(LC / MS)现在在代谢组学研究中发挥着核心作用。但是,基于LC / MS的方法受到电离效率低,体内浓度低以及极性磷酸化代谢物化学稳定性差的问题的困扰。在这项工作中,我们合成了轻和重同位素异构体,2-(重氮甲基)苯基)(9-甲基-1,3,4,9-四氢-2H-吡啶并[3,4-b]吲哚-2-的配对试剂yl)甲酮(DMPI)和d 3-(2-(重氮甲基)苯基)(9-甲基-1,3,4,9-四氢-2H-吡啶并[3,4-b]吲哚-2-基)甲酮(d 3 -DMPI)。DMPI和d 3 -DMPI的配对试剂带有重氮基团,这些重氮基团可以在温和条件下与极性磷酸化代谢产物上的磷酸基团有效且选择性地反应。作为概念证明,我们发现吲哚杂环基团从DMPI