期刊
JOURNAL OF SEPARATION SCIENCE
卷 45, 期 9, 页码 1580-1589出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.202100993
关键词
glycopeptides enrichment; hydrophilic interaction chromatography; mass spectrometry; nanomaterials
资金
- National Natural Science Foundation of China [21927805]
- Major Projects in Ningbo [2020Z090]
- K. C. Wong Magna Fund in Ningbo University
A novel porous bifunctionalized composite material with superhydrophilicity and small steric hindrance was synthesized via a simple method, showing excellent performance in glycopeptides enrichment.
In this work, a novel porous bifunctionalized composite material was synthesized via a simple method. Gold nanoparticles are uniformly dispersed on the surface of the biomimetic honeycomb chitosan membrane through the interaction between amino and Au, and then cysteine and glutathione are successfully grafted onto the surface of the Au by the Au-S bond. The modification of cysteine and glutathione makes this bifunctionalized composite material have significant advantages of superhydrophilicity and small steric hindrance simultaneously. This material manifests excellent property in glycopeptides enrichment, with high selectivity (1:5000), low detection limit (0.1 fmol center dot mu L-1), high recovery rate (99.4 +/- 0.5%), and good repeatability. In addition, with the help of nano-flow liquid chromatography tandem mass spectrometry, this composite achieved excellent performance in efficiently enriching glycopeptides in the serum of healthy people and nasopharyngeal carcinoma's disease patient. More excitingly, further gene ontology analysis of molecular function and biological process indicated that 41 original glycoproteins of the identified glycopeptides from serum of nasopharyngeal carcinoma's disease patient significantly partake in numerous cancer-associated events, including protease binding, calcium ion binding, enzyme binding, extracellular matrix organization, cellular response to tumor necrosis factor, and inflammatory response.
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