The world's first wiki where authorship really matters (Nature Genetics, 2008). Due credit and reputation for authors. Imagine a global collaborative knowledge base for original thoughts. Search thousands of articles and collaborate with scientists around the globe.

wikigene or wiki gene protein drug chemical gene disease author authorship tracking collaborative publishing evolutionary knowledge reputation system wiki2.0 global collaboration genes proteins drugs chemicals diseases compound
Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Construction and in vivo evaluation of an anti- PSA x anti-CD3 bispecific antibody for the immunotherapy of prostate cancer.

BACKGROUND: Cross-linking of tumor antigens with the T-cell associated CD3 antigen can be effectively achieved by bispecific monoclonal antibodies and lead to an increase in antigen-specific cytotoxicity in T cells. Because of the high organ specificity of the prostate specific antigen ( PSA), a bispecific antibody (BiAb) directed against this antigen and CD3 may be a tool for a highly specific immune therapy of prostate cancer. METHODS: For generating BiAb, the quadroma technique was used. Binding properties both to CD3 and PSA were shown by flow cytometry with the CD3 expressing Jurkat cell line and fluorescein- labeled PSA. Specific tumor cell lysis was tested with the PSA expressing prostate carcinoma cell line LNCaP as target and interleukin-2 activated human peripheral blood lymphocytes as effector cells in a chromium-51-release assay. For in vivo evaluation of the BiAb, a nude mouse model was used. The mice were inoculated with LNCaP prostate carcinoma cells. Animals with growing tumors were treated with 100 micrograms BiAb and 5 x 10(6) effector cells. RESULTS: Three stable quadromas producing anti-CD3 x anti- PSA BiAb were established. From the culture supernatant of one quadroma, BiAb was separated by affinity chromatography and tested in vitro and in vivo for its ability to target effector T lymphocytes against appropriate tumor cells. In vitro, a specific lysis of PSA expressing prostate carcinoma cells was demonstrated. In vivo, a significant reduction in tumor growth (p < 0.05) could be shown in nude mice treated with BiAb and effector cells as compared to a group treated only with effector cells and an untreated control group. CONCLUSION: In the present study, an anti-CD3 x anti-PSA-BiAb was demonstrated to be effective against prostate carcinoma cells in vitro and in vivo. Therefore this BiAb may be a tool for the immunotherapy of prostate cancer.[1]


  1. Construction and in vivo evaluation of an anti-PSA x anti-CD3 bispecific antibody for the immunotherapy of prostate cancer. Katzenwadel, A., Schleer, H., Gierschner, D., Wetterauer, U., Elsässer-Beile, U. Anticancer Res. (2000) [Pubmed]
WikiGenes - Universities