IDSL.IPA Characterizes the Organic Chemical Space in Untargeted LC/HRMS Data Sets.
IDSL.IPA Characterizes the Organic Chemical Space in Untargeted LC/HRMS Data Sets.
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DOI:
10.1021/acs.jproteome.2c00120
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发表时间:
2022-06-03
影响因子:
4.4
通讯作者:
Barupal, Dinesh Kumar
中科院分区:
文献类型:
--
作者:
Baygi, Sadjad Fakouri;Kumar, Yashwant;Barupal, Dinesh Kumar
关键词:
Generating comprehensive and high-fidelity metabolomics data matrices from LC/HRMS data remains to be extremely challenging for population-scale large studies (n > 200). Here, we present a new data processing pipeline, the Intrinsic Peak Analysis (IDSL.IPA) R package (https://ipa.idsl.me) to generate such data matrices specifically for organic compounds. The IDSL.IPA pipeline incorporates 1) identifying potential 12C and 13C ion pairs in individual mass spectra 2) detecting and characterizing chromatographic peaks using a new sensitive and versatile approach to perform mass correction, peak smoothing, baseline development for local noise measurement and peak quality determination 3) correcting retention time and cross-referencing peaks from multiple samples by a dynamic retention index marker approach and 4) annotating peaks using a reference database of m/z and retention time and 5) accelerating data processing using a parallel computation of the peak detection and alignment steps for larger studies. This pipeline has been successfully evaluated for studies ranging from 200–1,600 samples. By specifically isolating high quality and reliable signals pertaining to carbon-containing compounds in untargeted LC/HRMS datasets from larger studies, IDSL.IPA opens new opportunities for discovering new biological insights in the population-scale metabolomics and exposomics projects. The package is available in the R CRAN repository at https://cran.r-project.org/package=IDSL.IPA.
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