Development of a Mass Spectrometry-Based Pseudotargeted Metabolomics strategy to analyze Hormone-Stimulated Gastric Cancer Cells

Publication date: Available online 10 December 2019Source: Journal of Pharmaceutical and Biomedical AnalysisAuthor(s): Juan Li, Qingli Wang, Yichao Zheng, Piao Zhou, Xia Xu, Xueqi Liu, Longfei Zhao, Hongmin LiuAbstractGastric cancer (GC) is the third most common cause of cancer death worldwide, and the incidence of GC is higher in males than females. To investigate the gastric cellular response to hormone therapy, we developed a cell pseudotargeted metabolomics method based on liquid chromatography-hybrid triple quadrupole linear ion trap mass spectrometry (LC-QTRAP MS). Chromatographic separation, sample analysis and metabolite extraction were optimized in an integrated manner. The established pseudotargeted method, which combined nontargeted and targeted analyses, exhibited high selectivity, good repeatability and wide metabolome coverage. The method was then applied to discover differential metabolites from hormone-stimulated gastric cancer cells compared with the controls for the first time. The results demonstrated that hormone had subtle but phenotypically important alterations in nucleotide metabolism, amino acid metabolism, glycolysis, tricarboxylic acid (TCA) cycle, aminoacyl-tRNA biosynthesis and so on, which indicate that the developed method is a powerful tool for effective screening of endogenous polar metabolites in cell samples.
Source: Journal of Pharmaceutical and Biomedical Analysis - Category: Drugs & Pharmacology Source Type: research