Unprecedented highly efficient capture of glycopeptides by Fe3O4@Mg-MOF-74 core–shell nanoparticles

Magnetic Fe₃O₄ nanospheres coated with Mg-MOF-74 have been facilely prepared via epitaxial growth. Owing to the intrinsic hydrophilic pore surface and size-exclusive properties of Mg-MOF-74, the Fe₃O₄@Mg-MOF-74 core-shell nanoparticles show effective and selective enrichment of 441 N-glycosylation sites of 418 glycopeptides from 125 glycoproteins in 1 μL of human serum.