Chinese Journal of Chromatography ›› 2017, Vol. 35 ›› Issue (7): 688-695.DOI: 10.3724/SP.J.1123.2017.05014

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Fabrication of acylsemicarbazide-based porous organic polymer for selective enrichment of glycopeptides

WANG Hongwei1,2, LIU Zhongshan1, PENG Xiaojun2, OU Junjie1, YE Mingliang1   

  1. 1. Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;
    2. State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
  • Received:2017-05-17 Online:2017-07-08 Published:2013-10-18
  • Supported by:

    China State Key Research Grant (No.2016YFA0501402);National Natural Science Foundation of China (No.21575141).

Abstract:

An acylsemicarbazide-based porous organic polymer (POP) was facilely prepared by the polymerization of benzene-1,3,5-tricarbohydrazide (BTZ) and 1,4-phenylene diisocyanate (PDI). The physical properties of as-synthesized material were characterized by Fourier-transform infrared spectroscopy (FT-IR), solid-state cross polarisation magic angle spinning carbon-13 nuclear magnetic resonance (CP-MAS 13C NMR), nitrogen adsorption/desorption measurement, water contact angle and so on. The specific surface area was 166 m2/g, and the water contact angle was 46.4°, exhibiting hydrophilic property of the porous material. Thus, POP-1 was tried to be used for glycopeptides enrichment from tryptic digest of standard protein and complex biosamples in hydrophilic mode. The 19 typical N-linked glycopeptides were identified from 500 fmol tryptic digest of immunoglobulin G (IgG) from human serum by matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF/MS) analysis, meanwhile, 1919 unique glycopeptides with 1350 N-glycosylation sites from 605 different N-linked glycoproteins were identified from 100 μ g mouse liver tryptic digest by capillary liquid chromatography (cLC)-MS/MS analysis. These results demonstrated the great potential of POP-1 for glycoproteome analysis.

Key words: 1,4-phenylene diisocyanate (PDI), acylsemicarbazide, benzene-1,3,5-tricarbohydrazide (BTZ), glycopeptide enrichment, hydrophilic, porous organic polymer

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