标题：A recombinant immunotoxin that is active on prostate cancer cells and that is composed of the Fv region of monoclonal antibody PR1 and a truncated form of Pseudomonas exotoxin.
期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1993
卷号：90
期号：2
页码：547-551
DOI：10.1073/pnas.90.2.547
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：Monoclonal antibody PR1 binds to the surface of normal prostate cells and to adenocarcinomas of the prostate. The cDNAs coding for the heavy and light chain variable regions of monoclonal antibody PR1 were cloned by PCR techniques. A recombinant toxin was then constructed that has the heavy chain variable region of monoclonal antibody PR1 connected to the light chain variable region by a flexible peptide linker to create a single-chain Fv; the Fv in turn is fused to a truncated form of Pseudomonas exotoxin. The resulting recombinant immunotoxin PR1(Fv)-PE38KDEL was produced in Escherichia coli and accumulated in inclusion bodies. After denaturation and renaturation, active monomeric molecules with a molecular mass of approximately 65 kDa were purified to homogeneity. PR1(Fv)-PE38KDEL binds specifically to cells containing the PR1 antigen and is very cytotoxic toward a subset of LNCaP cells that express the PR1 antigen on their surface.
