开发和应用一种LC-MS/MS方法,用于氧醇和胆酸的联合量化
Martin Roumain1, Giulio G Muccioli1
1Bioanalysis and Pharmacology of Bioactive Lipids Research Group, Louvain Drug Research Institute, Université catholique de Louvain, Brussels, Belgium.
Journal of lipid research
|November 18, 2024
概括
一种新的LC-MS/MS方法可以同时分析氧醇和胆酸. 这一突破有助于研究它们在各种疾病中的作用,通过在生物样本中量化这些脂质.
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:
- 氧醇和胆汁酸是关键的生物活性脂质,参与许多生理和病理过程.
- 它们在疾病中的相互联系的作用需要同时研究,但分析方面的挑战阻碍了全面的分析.
- 现有的方法对于这些不同的脂类的同时量化是有限的.
研究的目的:
- 开发一种灵敏的液体色谱-并联质谱法 (LC-MS/MS) 方法,用于同时量化氧醇和胆酸.
- 为了解决对这些相互连接的脂类家族的综合分析方法的需求.
- 克服分析挑战,包括大量的分析物,同位素和广泛的极性范围.
主要方法:
- 开发一种敏感的LC-MS/MS方法,使用8种同位素标记的内部标准.
- 提取协议的优化和净化步骤的实施.
- 实现了对18种氧化醇,11种未结合的胆汁酸,15种结合的胆汁酸和1种胆汁酸前体的染色分离.
主要成果:
- 开发的方法在一次运行中成功量化了多个氧醇和胆酸.
- 分析了人体血,量化了12种氧化醇和14种胆酸.
- 分析了小鼠血 (洞静脉和门静脉),量化了多达10种氧醇和20种胆酸.
结论:
- 已经建立了一种强大而敏感的LC-MS/MS方法,用于同时分析氧和胆酸.
- 这种方法克服了重要的分析障碍,使得更全面的脂质分析成为可能.
- 验证的方法适用于临床前和临床样本,促进了与脂质相关疾病的研究.
相关概念视频
01:14Gas Chromatography–Mass Spectrometry (GC–MS)
Gas chromatography–mass spectrometry (GC–MS) is the combination of analytical techniques of gas chromatography and mass spectrometry in a single instrument for analyzing a mixture of compounds. The gas chromatograph separates the compounds in the mixture, and the mass spectrometer analyzes each compound separately to determine the molecular masses and molecular structures.
A gas chromatograph consists of a long, narrow capillary column with a polysiloxane coating on the inner wall. The coating...
A gas chromatograph consists of a long, narrow capillary column with a polysiloxane coating on the inner wall. The coating...
01:33Peptide Identification Using Tandem Mass Spectrometry
Tandem mass spectrometry, also known as MS/MS or MS2, is an analytical technique that employs two mass analyzers. Essentially it is a series of mass spectrometers that helps isolate a particular biomolecule and then helps study its chemical properties.
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...
01:21Mass Spectrometry: Complex Analysis
Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
01:21Tandem Mass Spectrometry
Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...