Combined Use of MALDI-TOF Mass Spectrometry and 31P NMR Spectroscopy for Analysis of Phospholipids.

Combined Use of MALDI-TOF Mass Spectrometry and 31P NMR Spectroscopy for Analysis of Phospholipids.
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结合使用 MALDI-TOF 质谱和 31P NMR 光谱分析磷脂

DOI:
10.1007/978-1-4939-6996-8_11
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发表时间:
2017
影响因子:
--
通讯作者:
Schiller J
Schiller J
中科院分区:
--
文献类型:
--
作者:
Schröter J;Popkova Y;Süß R;Schiller J

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脂质是所有生物组织和体液的重要和丰富的成分。特别是,磷脂(PL)构成了细胞膜的主要部分,在信号转导中发挥作用,一些选定的PL越来越多地被认为是潜在的疾病标志物。然而,与蛋白质分析技术相比,脂质分析方法较少建立。质谱(MS)是一种越来越多地用于分析脂质的技术,特别是与电喷雾电离(ESI)MS结合使用,电喷雾电离(ESI)MS是迄今为止最好的电离方法。基质辅助激光解吸电离飞行时间(MALDI-TOF)MS本身已被证明在脂质分析领域也是有用的。31 P核磁共振(NMR)光谱是PL分析的另一种强有力的方法,代表了一种直接的定量方法,并且不受抑制效应的影响。本章概述了MALDI的方法学方面-介绍了TOF MS和31 P NMR在脂类研究中的应用,并总结了两种方法各自的优缺点。特别是,MS中的抑制作用将被强调,并将讨论克服这一问题的可能方法(使用不同的基质,在分析前分离相关脂质混合物)。
Lipids are important and abundant constituents of all biological tissues and body fluids. In particular, phospholipids (PL) constitute a major part of the cellular membrane, play a role in signal transduction, and some selected PL are increasingly considered as potential disease markers. However, methods of lipid analysis are less established in comparison to techniques of protein analysis. Mass spectrometry (MS) is an increasingly used technique to analyze lipids, especially in combination with electrospray ionization (ESI) MS which is the so far best established ionization method. Matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) MS has itself proven to be also useful in the field of lipid analysis.31P nuclear magnetic resonance (NMR) spectroscopy is another powerful method of PL analysis, represents a direct quantitative method, and does not suffer from suppression effects.This chapter gives an overview of methodological aspects of MALDI-TOF MS and31P NMR in lipid research and summarizes the specific advantages and drawbacks of both methods. In particular, suppression effects in MS will be highlighted and possible ways to overcome this problem (use of different matrices, separation of the relevant lipid mixture prior to analysis) will be discussed.
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