In Situ Synthesis of Magnetic Mesoporous Phenolic Resin for the Selective Enrichment of Glycopeptides

Analytical Chemistry
Quanqing ZhangPengyuan Yang

Abstract

Protein glycosylation is a significant participant in a mass of biological processes, which is a pivotal protein post-translational modification. Due to the low contents of glycopeptides compared with nonglycopeptides and the microheterogeneity of glycosylation sites, highly selective enrichment methods for the purification of glycopeptides are required for the comprehensive characterization of glycoproteomics. In this work, a type of magnetic mesoporous phenolic resin (MMP) was prepared using branched polyethylenimine (PEI) as a cross-linker from a homogeneous magnetic Fe3O4@SiO2 solution in a resorcinol/formaldehyde monomer aqueous system via an in situ emulsion polymerization procedure. The results showed that MMP exhibited good biocompatibility, a mesoporous structure, nitrogen-containing functionality, excellent hydrophilicity, and solvent resistance by using multiple characterization methods. By taking advantage of the interaction between hydrophilic groups on the MMP and glycan components on the glycopeptides, the acquired MMP was utilized to the selective capture of N-glycopeptides (human IgG or HRP tryptic digests/BSA proteins = 1:50), good recovery yield (70.18-97.23%), superior binding capacity (400 mg g-1), and exce...Continue Reading

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Citations

Aug 16, 2019·Chemical Communications : Chem Comm·Nianrong SunChunhui Deng
Sep 14, 2021·Analytical Methods : Advancing Methods and Applications·Zheng GaoJunjie Ou

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