GIPS-Mix for Accurate Identification of Isomeric Components in Glycan Mixtures Using Intelligent Group-Opting Strategy

Accurate identification of glycan structures is highly desirable as they are intimately linked to their different functions. However, glycan samples generally exist as mixtures with multiple isomeric structures, making assignment of individual glycan components very challenging, even with the aid of...

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Published in:Analytical chemistry (Washington) 2023-01, Vol.95 (2), p.811-819
Main Authors: Huang, Chuncui, Hou, Meijie, Yan, Jingyu, Wang, Hui, Wang, Yu, Cao, Cuiyan, Wang, Yaojun, Gao, Huanyu, Ma, Xinyue, Zheng, Yi, Bu, Dongbo, Chai, Wengang, Li, Yan, Sun, Shiwei
Format: Article
Language:English
Subjects:
Breast milk
Chemistry
Glycan
Humans
Isomerism
Mass spectrometry
Mass spectroscopy
Milk, Human - chemistry
Mixtures
Oligosaccharides
Oligosaccharides - analysis
Polysaccharides
Polysaccharides - chemistry
Spectra
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container_title Analytical chemistry (Washington)
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creator Huang, Chuncui
Hou, Meijie
Yan, Jingyu
Wang, Hui
Wang, Yu
Cao, Cuiyan
Wang, Yaojun
Gao, Huanyu
Ma, Xinyue
Zheng, Yi
Bu, Dongbo
Chai, Wengang
Li, Yan
Sun, Shiwei
description Accurate identification of glycan structures is highly desirable as they are intimately linked to their different functions. However, glycan samples generally exist as mixtures with multiple isomeric structures, making assignment of individual glycan components very challenging, even with the aid of multistage mass spectrometry (MSn). Here, we present an approach, GIPS-mix, for assignment of isomeric glycans within a mixture using an intelligent group-opting strategy. Our approach enumerates all possible combinations (groupings) of candidate glycans and opts in the best-matched glycan group(s) based on the similarity between the simulated spectra of each glycan group and the acquired experimental spectra of the mixture. In the case that a single group could not be elected, a tie break is performed by additional MSn scanning using intelligently selected precursors. With 11 standard mixtures and 6 human milk oligosaccharide fractions, we demonstrate the application of GIPS-mix in assignment of individual glycans in mixtures with high accuracy and efficiency.
doi_str_mv 10.1021/acs.analchem.2c02978
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source American Chemical Society:Jisc Collections:American Chemical Society Read & Publish Agreement 2022-2024 (Reading list)
subjects Breast milk
Chemistry
Glycan
Humans
Isomerism
Mass spectrometry
Mass spectroscopy
Milk, Human - chemistry
Mixtures
Oligosaccharides
Oligosaccharides - analysis
Polysaccharides
Polysaccharides - chemistry
Spectra
title GIPS-Mix for Accurate Identification of Isomeric Components in Glycan Mixtures Using Intelligent Group-Opting Strategy
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