[Screening the mimic antigen epitopes of triosephosphate isomerase of Schistosoma japonicum Chinese strain (Sjc-Tpi) with random phage peptide library].
OBJECTIVE
To screen the mimic antigen epitopes of the triose phosphate isomerase of Schistosoma japonicum Chinese strain (SjC-TPI) and investigate their immunogenicity.


METHODS
The random phage peptide library (PH.D.-12) was screened with the purified antibody(IgG) against SjC-TPI to get the positive phage which contained the mimic antigen epitopes of SjC-TPI, and the immuno-characterization of the mimic antigen epitopes were investigated.


RESULTS
Two mimic antigen epitopes (M1, M2) of SjC-TPI were obtained. The immuno-sera of mice (Kunming strain) against the positive phages could recognize both the SjC-TPI and the protein of the positive phages. The DNA sequencing data showed no homology between the sequences of the deduced amino acid of the two mimic antigen peptides and the amino acid of SjC-TPI.


CONCLUSIONS
The two mimic antigen epitopes of SjC-TPI obtained are imitative epitopes of the configuration antigen of SjC-TPI.
Yu
C X
CX
Jiangsu Institute of Parasitic Diseases, Wuxi 214064.
Zhu
Y C
YC
Yin
X R
XR
He
W
W
Xu
Y L
YL
Guan
X H
XH
D000818:Animals; D000939:Epitopes / Q000737:chemistry / Q000276:immunology*; D007074:Immunoglobulin G / Q000276:immunology; D019151:Peptide Library; D012549:Schistosoma japonicum / Q000201:enzymology* / Q000276:immunology; D017422:Sequence Analysis, DNA; D014305:Triose-Phosphate Isomerase / Q000737:chemistry / Q000276:immunology*
D000939:Epitopes; D007074:Immunoglobulin G; D019151:Peptide Library; D014305:Triose-Phosphate Isomerase