Isotopic labeling-assisted metabolomics using LC-MS.

Isotopic labeling-assisted metabolomics using LC-MS.
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DOI:
10.1007/s00216-012-6375-y
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发表时间:
2013-01
影响因子:
4.3
通讯作者:
Schuhmacher, R.
Schuhmacher, R.
中科院分区:
化学2区
文献类型:
--
作者:
Bueschl, C.;Krska, R.;Kluger, B.;Schuhmacher, R.

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代谢组学已成为最新的所谓“组学”学科,具有在生物系统水平上更深入地了解基本生化过程的巨大潜力。在最近的技术发展中,LC-HRMS 能够测定各种浓度的数百至数千种代谢物,并已发展成为非靶向代谢组学中最强大的技术之一。对体内稳定同位素标记样品或参考物质与未标记样品的混合物进行分析会产生特定的 LC-MS 数据模式,这些数据模式可在几乎所有数据处理步骤中系统地利用。这包括识别高度复杂的 LC-MS 数据中真正的代谢物衍生分析特征以及生物样品整体生化成分的表征。此外,稳定同位素标记可用于更准确地定量(通过内部标准化)和不同生物体中化合物的鉴定。
Metabolomics has emerged as the latest of the so-called “omics” disciplines and has great potential to provide deeper understanding of fundamental biochemical processes at the biological system level. Among recent technological developments, LC–HRMS enables determination of hundreds to thousands of metabolites over a wide range of concentrations and has developed into one of the most powerful techniques in non-targeted metabolomics. The analysis of mixtures of in-vivo-stable isotopic-labeled samples or reference substances with un-labeled samples leads to specific LC–MS data patterns which can be systematically exploited in practically all data-processing steps. This includes recognition of true metabolite-derived analytical features in highly complex LC–MS data and characterization of the global biochemical composition of biological samples. In addition, stable-isotopic labeling can be used for more accurate quantification (via internal standardization) and identification of compounds in different organisms.
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