CHINESE JOURNAL OF PARASITOLOGY AND PARASITIC DISEASES ›› 2017, Vol. 35 ›› Issue (5): 509-511.

• Orginal Article • Previous Articles     Next Articles

Screening of antigens specific for the anti-Cysticercus cellulosae IgG4 antibody

Jin LI1, Yan WANG2, Qing-kuan WEI1, Feng-ju JIA1, Ting XIAO1, Hui SUN1, Zhen-hua YU1, Bing-cheng HUANG1,*()   

  1. 1 Shandong Institute of Parasitic Diseases, WHO collaborating Center for Lymphatic Filariasis and Taeniasis/Cysticercosis, Jining, 272033, China
    2 Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200011, China
  • Received:2017-04-11 Online:2017-10-30 Published:2018-01-08
  • Contact: Bing-cheng HUANG E-mail:hbc863@hotmail.com
  • Supported by:
    Supported by the Natural Science Fund of Shandong Province(No. ZR2015YL033, ZR2015YL051), the National Natural Science Foundation of China(No. 30872208)and the Innovation Project of Shandong Academy of Medical Sciences

Abstract:

The prepared cyst fluid antigen was separated by two-dimensional electrophoresis(2-DE). The protein spots were analyzed by ImageMaster 2D Plantinum 6.0 software after Coomassie blue staining, on which Western blotting analysis was performed using sera of patients with cerebral cysticercosis as the primary antibody. The positive protein spots were selected and analyzed by Matrix-assisted laser desorption ionization tandem mass spectrometry (GC-MS), and the peptide mass fingerprints were obtained. The specific Cysticercus cellulosae antigen for IgG4 antibody was identified with the Mascot software by searching and alignment in NCBI. 2-DE detected 201 ± 5 protein spots in the cystic acid antigen, with a relative molecular weight (Mr) of 10 000-170 000 and a pI of 3.0-10.0. Western blotting analysis showed that the antigens binding the specific IgG4 antibody were mainly small molecular-weight proteins. Fifty-one(antigen) spots were obtained from them for mass spectrometry, and 21 of them were positive(peak score>39). The positive spots were related with 10 cysticercus proteins, most closely with Ts8B2, Ts8B3, 10ku antigen and Sequence 3.

Key words: Cysticercus cellulosae, Cysticercus fluid antigens, IgG4, Two-dimensional electrophoresis

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