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- W2972615877 abstract "Amino acids play key roles in cellular protein biosynthesis and energy metabolism pathways. In this study, a simple, rapid and sensitive method was developed for the simultaneous determination of 24 free amino acids in cell samples using hydrophilic interaction liquid chromatography coupled to tandem mass spectrometry (HILIC-MS/MS). Cell samples were deproteinized with methanol/H2O (80:20, v/v) without intricate derivatization process. The analytes were separated on a Waters BEH Amide column (2.1 mm × 100 mm, 1.7 μm), and accomplished within 5 min at a flow rate of 0.2 mL/min. The good linearity was obtained for all analytes (r2 > 0.99) with the limits of quantification from 0.1 to 25 ng/mL. The intra- and inter-day precision ranged from 0.35 to 10.36% and from 2.22 to 9.93%, respectively. The recoveries of most analytes were between 80% and 120% with RSD less than 10.0%. The developed method was then applied to the direct analysis of 24 underivatized amino acids in human gastric cancer cell line MGC803 treated with the antitumor candidate drug J3, and significant differences in the concentration levels of amino acids were also assessed." @default.
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- W2972615877 date "2019-11-01" @default.
- W2972615877 modified "2023-10-09" @default.
- W2972615877 title "Simultaneous determination of 24 free amino acids in MGC803 cells by hydrophilic interaction liquid chromatography with tandem mass spectrometry" @default.
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- W2972615877 doi "https://doi.org/10.1016/j.jchromb.2019.121792" @default.
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