Chem. J. Chinese Universities ›› 2023, Vol. 44 ›› Issue (11): 20230239.doi: 10.7503/cjcu20230239

• Analytical Chemistry • Previous Articles     Next Articles

Vinyl Sulfone Functionalized Magnetic Nanoparticles and Its Application in Palmitoylated Peptides Enrichment

ZHENG Haijiao, XU Wenhui, JIA Qiong()   

  1. College of Chemistry,Jilin University,Changchun 130012,China
  • Received:2023-05-18 Online:2023-11-10 Published:2023-07-11
  • Contact: JIA Qiong E-mail:jiaqiong@jlu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(22004045)

Abstract:

Vinyl sulfone modified magnetic nanoparticles(denoted as MagBVP) were synthesized and used as the magnetic carrier of magnetic solid phase extraction(MSPE) platform, combined with MALDI-TOF MS or LC-MS/MS. The MagBVP was characterized by means of vibrating sample magnetometer, field emission scanning electron microscopy, infrared spectroscopy, zeta potential measurement and X-ray diffraction. The synthesized palmitoylated palmitoyl-coA was selected as the modeling palmitoylated peptide sample. Under the optimal conditions, the MSPE-MS platform could achieve high selectivity(BSA tryptic digests/palmitoylated peptide molar ratio of 2000∶1) and sensitivity(the detection limit was determined to be as low as 1.0 fmol/μL) for palmitoylated peptide. Finally, the method was applied to the determination of palmitoylated peptides in cell lysates samples. These results showed that the magnetic material modified by vinyl sulfone had a high selectivity for palmitoylomics.

Key words: Sulfone, Magnetic nanoparticle, Magnetic solid phase extraction, Palmitoylomics, Mass spectrometry

CLC Number: 

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