色谱

色谱 ›› 2014, Vol. 32 ›› Issue (2): 126-132.DOI: 10.3724/SP.J.1123.2013.11050

• 研究论文 • 上一篇    下一篇

基于拟靶向液相色谱-质谱联用的胃癌患者血清代谢组分析

杨太忠1,2, 罗萍2, 李艳丽2, 华瑞1, 尹沛源2, 许国旺2   

  1. 1. 吉林大学第一医院, 吉林 长春 130021;
    2. 中国科学院大连化学物理研究所, 辽宁 大连 116023
  • 收稿日期:2013-11-27 修回日期:2013-12-20 出版日期:2014-02-08 发布日期:2014-01-25
  • 通讯作者: 华瑞， 尹沛源
  • 基金资助:

    国家科技重大专项(2012ZX10002011)；国家自然科学基金项目(81200289).

A serum metabolomics study of gastric cancer based on pseudotargeted liquid chromatography-mass spectrometry approach

YANG Taizhong1,2, LUO Ping2, LI Yanli2, HUA Rui1, YIN Peiyuan2, XU Guowang2   

  1. 1. The First Hospital of Jilin University, Changchun 130021, China;
    2. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
  • Received:2013-11-27 Revised:2013-12-20 Online:2014-02-08 Published:2014-01-25

PDF

684

被引次数

18

摘要：

胃癌是一种高发的恶性肿瘤，是癌症相关死亡的第二大病因。早期筛查是提高患者生存率的有效手段，但目前临床上尚缺乏实现胃癌无创筛检的可靠标志物。本研究采用了基于液相色谱-质谱联用的拟靶向代谢组学方法分析了20例胃癌患者及40例正常人血清代谢组，以期发现新的潜在代谢标志物。代谢组数据的主成分分析和偏最小二乘法数据分析结果显示，胃癌患者与健康人群的血清代谢组存在明显的差异，结合非参数检验进一步筛选并定性出57个差异代谢物。其中二氢胆固醇经验证组样本验证，具有成为胃癌代谢标志物的潜力。本研究在发现胃癌的潜在代谢标志物的同时，也为胃癌患者代谢分型提供了重要的科学依据。

关键词: 代谢组学, 拟靶向, 胃癌, 液相色谱-质谱, 肿瘤标志物

Abstract:

Gastric cancer is one of the most common malignant and the second most frequent cause of cancer-related mortality in the world. Noninvasive screen methods including tumor markers are intensively needed in the clinic. To discover metabolic markers for gastric cancers, the sera metabolic profiles of 20 gastric cancer (GC) patients and 40 healthy controls were analyzed by liquid chromatography coupled with mass spectrometry (LC-MS) using a pseudotargeted approach. The results of principal component analysis (PCA) and partial least squares-discriminant analysis (PLS-DA) indicated that obvious classification could be observed between GC and the healthy controls. According to the results of non-parametric statistical test, 57 ions were identified among all the differential metabolic features. Of all the identified differential metabolites, dihydrocholesterol provide good diagnostic performance of GC, which was also validated by another cohort including the 20 gastric cancer patients and the 39 healthy controls. With this robust pseudotargeted approach, our study provides both potential tumor markers and the basis for the metabolic phenotype of gastric cancers.

Key words: gastric cancer, liquid chromatography-mass spectrometry (LC-MS), metabolomics, pseudotargeted, tumor biomarker

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