| Metabolomic and Lipidomic Analysis of Bone Marrow Derived Macrophages
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Author:
Date:
2020-07-20
[Abstract] Macrophages are highly plastic immune cells that are capable of adopting a wide array of functional phenotypes in response to environmental stimuli. The changes in macrophage function are often supported and regulated by changes in cellular metabolism. Capturing a comprehensive picture of metabolism is vital for understanding the role of metabolic rewiring in the immune response. Here we present a method for systematically quantifying the abundance of metabolites and lipids in primary murine bone marrow derived macrophages (BMDMs). This method simultaneously extracts polar metabolites and lipids from BMDMs using a rapid two-phase extraction procedure. The polar metabolite fraction and lipid fraction are subsequently analyzed by separate liquid chromatography-mass spectrometry (LC-MS) ...
[摘要] [摘要] 巨噬细胞是高度可塑性的免疫细胞，能够对环境刺激产生广泛的功能表型。巨噬细胞功能的改变通常受到细胞代谢的支持和调节。获取新陈代谢的全面图像对于理解代谢重组在免疫反应中的作用至关重要。本文提出了一种系统定量测定小鼠骨髓源性巨噬细胞（BMDMs）中代谢物和脂质丰度的方法。该方法采用快速两相萃取法同时从BMDMs中提取极性代谢物和脂质。极性代谢物部分和脂质部分随后通过单独的液相色谱-质谱（LC-MS）方法进行分析，以优化覆盖率和定量。这使得对细胞代谢的全面表征可以用来理解各种环境刺激对巨噬细胞代谢和功能的影响。
[背景] 巨噬细胞是先天性免疫系统的细胞，在局部微环境中对信号作出反应时，可采用多种功能表型。巨噬细胞的激活与细胞代谢的特定重编程相结合并高度依赖（Tannahill et al.，2013；Galván-Peña and O'Neill，2014；Jha et al.，2015；Kelly and O'Neill，2015；Cordes et al.，2016；Mills and O'Neill 2016；等人；Mills et al.，2016；Liu et al.，2013；Lampropoulou et al.，2016；Van den ...
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| Extraction and Analysis of Pan-metabolome Polar Metabolites by Ultra Performance Liquid Chromatography–Tandem Mass Spectrometry (UPLC-MS/MS)
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Author:
Date:
2018-02-05
[Abstract] Modern triple quadrupole mass spectrometers provide the ability to detect and quantify a large number of metabolites using tandem mass spectrometry (MS/MS). Liquid chromatography (LC) is advantageous, as it does not require derivatization procedures and a large diversity in physiochemical characteristics of analytes can be accommodated through a variety of column chemistries. Recently, the comprehensive optimization of LC-MS metabolomics using design of experiments (COLMeD) approach has been described and used by our group to develop robust LC-MS workflows (Rhoades and Weljie, 2016). The optimized LC-MS/MS method described here has been utilized extensively for metabolomics analysis of polar metabolites. Typically, tissue or biofluid samples are extracted using a modified Bligh-Dyer ...
[摘要] 现代三重四极杆质谱仪提供检测和定量大量使用串联质谱（MS / MS）的代谢物的能力。液相色谱（LC）是有利的，因为它不需要大量的生理化学特性。近日，采用的实验（Colmed）的方式设计LC-MS代谢组的全面优化已经被描述和使用我们集团发展稳健的LC-MS工作流程（罗兹和Weljie，2016）。优化的LC-MS / MS方法已被广泛应用于极性代谢物的代谢组学分析。典型地，组织或生物流体样品使用经修饰的Bligh-Dyer的协议萃取（Bligh和Dyer的，1959; Tambellini 等人，2013年）。在此描述的方案使用靶向极性代谢物从通过超高效液相色谱 - 串联质谱法（UPLC-MS / MS）的组织和生物流体多反应监测（MRM）描述的工作流程。此工作流已被广泛用于chronometabolic分析（Krishnaiah 等人，第二千〇十七）中，用推广到其他类型的分析，以及应用程序（森古普塔等人 2017。 Sivanand等人，2017）。
【背景】质谱（MS）和核磁共振（NMR）（Liu和Locasale，2017）。虽然核磁共振和质谱是代谢组学的重要工具，但质谱可以更灵敏地分析样品（Liu and Locasale，2017）。在质谱法中，有多种方法可用，但是需要快速方法来描述全球代谢组学（Lv et ...
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