Web Server for Peak Detection, Baseline Correction, and Alignment in Two-Dimensional Gas Chromatography Mass Spectrometry-Based Metabolomics Data

Tze Feng Tian, San Yuan Wang, Tien Chueh Kuo, Cheng En Tan, Guan Yuan Chen, Ching Hua Kuo, Chi Hsin Sally Chen, Chang Chuan Chan, Olivia A. Lin, Y. Jane Tseng

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Two-dimensional gas chromatography time-of-flight mass spectrometry (GC×GC/TOF-MS) is superior for chromatographic separation and provides great sensitivity for complex biological fluid analysis in metabolomics. However, GC×GC/TOF-MS data processing is currently limited to vendor software and typically requires several preprocessing steps. In this work, we implement a web-based platform, which we call GC2MS, to facilitate the application of recent advances in GC×GC/TOF-MS, especially for metabolomics studies. The core processing workflow of GC2MS consists of blob/peak detection, baseline correction, and blob alignment. GC2MS treats GC×GC/TOF-MS data as pictures and clusters the pixels as blobs according to the brightness of each pixel to generate a blob table. GC2MS then aligns the blobs of two GC×GC/TOF-MS data sets according to their distance and similarity. The blob distance and similarity are the Euclidean distance of the first and second retention times of two blobs and the Pearson's correlation coefficient of the two mass spectra, respectively. GC2MS also directly corrects the raw data baseline. The analytical performance of GC2MS was evaluated using GC×GC/TOF-MS data sets of Angelica sinensis compounds acquired under different experimental conditions and of human plasma samples. The results show that GC2MS is an easy-to-use tool for detecting peaks and correcting baselines, and GC2MS is able to align GC×GC/TOF-MS data sets acquired under different experimental conditions. GC2MS is freely accessible at http://gc2ms.web.cmdm.tw.

Original languageEnglish
Pages (from-to)10395-10403
Number of pages9
JournalAnalytical Chemistry
Volume88
Issue number21
DOIs
Publication statusPublished - Nov 1 2016
Externally publishedYes

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ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

Tian, T. F., Wang, S. Y., Kuo, T. C., Tan, C. E., Chen, G. Y., Kuo, C. H., Chen, C. H. S., Chan, C. C., Lin, O. A., & Tseng, Y. J. (2016). Web Server for Peak Detection, Baseline Correction, and Alignment in Two-Dimensional Gas Chromatography Mass Spectrometry-Based Metabolomics Data. Analytical Chemistry, 88(21), 10395-10403. https://doi.org/10.1021/acs.analchem.6b00755