一种大规模的,有针对性的代谢学方法,用于通过液态染色学和质谱学分析和量化人体血中的代谢物
Teresa S McMillen1, Andrew Leslie2, Kenneth Chisholm2
1Department of Chemistry, Dalhousie University, Halifax, Nova Scotia Canada.
Analytica chimica acta
|October 12, 2023
概括
这项研究引入了一种全面的代谢学方法来分析血,从而能够精确量化540种代谢物. 快速的40分钟过程通过纠正分析物损失来提高准确性,这对于临床应用非常有价值.
科学领域:
- 生物化学 生物化学
- 分析化学 分析化学
- 生物医学科学 生物医学科学
背景情况:
- 代谢学研究小分子 (代谢物),以了解健康状况.
- 大规模的有针对性的代谢学方法正在推动生物样本分析.
- 液体染色学-双重质谱法 (LC-MS/MS) 是一个关键的分析技术.
研究的目的:
- 为生物样本分析提供一个大规模的代谢学方法,特别是量化血中的代谢物.
- 与现有的有针对性的方法相比,开发一个全面的和数量稳定的方法.
主要方法:
- 使用了10分钟的色谱分离方法,将水友交互液态色谱 (HILIC) 和逆相 (RP) 静止相结合起来.
- 采用正负电喷射电离,以最大限度地提高代谢组覆盖范围.
- 使用双列和双电离模式,在40分钟内完成样本分析.
- 包含200多个分析标准,用于增强量化.
主要成果:
- 开发了一种能够分析540种代谢物的方法,具有高定量稳定性.
- 实施了从血中恢复代谢物的大规模评估,以实现绝对量化.
- 在提取,处理和储存过程中纠正了分析物损失.
- 通过将其应用于乳腺癌患者的血,证明了该方法的适用性.
结论:
- 提出的代谢学方法为血分析提供了全面的覆盖范围和定量准确性.
- 这种快速,强大的方法适用于临床样本,包括来自癌症患者的样本.
- 这种方法通过允许绝对代谢物量化,促进了目标代谢学.
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