摘要
目的:以抗-bFGF单克隆抗体GF22为目标,用噬菌体随机七肽库进行筛选。经三轮筛选后的噬菌体阳性克隆能特异地抑制bFGF与CF22结合。测序结果表明与CF22结合的序列高度保守,为LP(P/L)GH(F/I)K,LPPGHFK与bFGF分子(155氨基酸)上22-27位氨基酸一致,表明该序列在bFGF上是一个主要的抗原表位。用此序列的阳性噬菌体克隆免疫小鼠,发现此序列摸拟肽能诱导抗bFGF抗体反应,且序列LPLGHIK诱导的抗体反应比LPPCHFK序列强三倍,序列LPLGHIK可能作为一种有价值的肽疫苗诱导抗bFGF抗体的产生。
Objective:To investigate the epitope and its immunogenicity of bFGF. Methods -.The phage disply 7 peptides library was screened with monoclonal antibody GE22 to bFGF, which neutralize the bioactivin'es of bFGF. Results: After three cycles screening, the isolated phage clones with GF22 epitopes specifically inhibited bFGF binding to GF22.Sequence analysis showd that the epitopes shared a highly consensus spequence( Leu-Pro-Pro/Leu-Gly-His-Phe/He-Lys) and PPGHFK sequence was located at aino acids 22-27 (PPGHFK) within bFGF (155aa) molecule.Phage clones with the epitopes could highly induce imuno-response in mice,eapically with the sequence LPLGHK was 3 times higher than original sequence. Conclusion:Trie sequence LPLGHK may be a valuable vaccine in future studies of bFGF.
出处
《中国免疫学杂志》
CAS
CSCD
北大核心
2003年第2期88-92,共5页
Chinese Journal of Immunology
基金
受国家计委部门重点项目资助计科技[1997]2071号
