PSMA mimotope isolated from phage displayed peptide library can induce PSMA specific immu

PSMA mimotope isolated from phage displayed peptide library can induce PSMA specific immune

response

ZHUZHONGYU;CUIPINGZHONG;等

【期刊名称】《细胞研究：英文版》 【年(卷),期】1999(009)004

【摘要】Prostate-specific membrane antigen (PSMA) is a cell surface glycoprotein expressed predominantly in prostate secretory acinar epithelium and prostate cancer cells as well as in several extraprostatic tissues.Mouse monoclonal antibody 4G5 specific to the extracellular domain of PSMA was used to screen two phage displayed peptide libraries (9aa linear and 9aa cys library).Three 4G5-reactive phagotopes were identified.Sequence analysis of isolated clones demonstrated that the interaction motif“VDPA/SK” has high homology to 719-725aa on PSMA.Immunohistochemical staining of the prostate cancer sample with the psma-mimic phagotope(mimotope) immunized serum antibodies demonstrate that the mimotope isolated from the phage displayed peptide libraries can induce PSMA specific immune response in vivo.

【总页数】10页(271-280)

【关键词】噬菌体展示肽库;前列腺特异膜抗原;单抗;表位;PSMA;前列腺癌;特异性免疫反应