Journal
TALANTA
Volume 161, Issue -, Pages 647-654Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2016.09.005
Keywords
Mesoporous carbon material; Magnetic; Endogenous peptides; Human serum
Categories
Funding
- National Key Scientific Instrument and Equipment Development Project [2012YQ120044]
- State Key Program of National Natural Science of China [21235005]
- National Natural Science Foundation of China [21475044]
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Highly sensitive and selective enrichment of endogenous peptides or proteins from complex bio-system takes a significant important place to the proteomic. In this work, a unique Fe3O4@2SiO(2)@mSiO(2)-C nanomaterial was synthesized, contributing to the separation and enrichment of low concentration peptides from complex mixture. The highly ordered mesoporous carbon structure render the nanospheres with unique properties of strongly connected pore channels, strong hydrophobic properties, high specific surface area (254.90 m(2)/g), uniform pore size (3.61 nm). Which made it a promising candidates for the efficient enrichment of peptides through hydrophobic-hydrophobic interaction with low detection limit (0.2 fmol), superb size-exclusion of high molecular weight proteins, highly selectivity for BSA digest (molar ratio of BSA tryptic digests/BSA, 1:400), ideal peptides recovery (about 87.5%), wonderful repeatability (RSD less than 25%). Moreover, the as-prepared Fe3O4@2SiO(2)@mSiO(2)-C nanoparticles were successfully enriched 2198 endogenous peptides from human serum, which fully indicated that the mesoporous carbon nanoparticles was a promising candidate for isolating proteins or peptides from complex biologicals.
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