Accession Number : AD1050866


Title :   CDK5-A Novel Role in Prostate Cancer Immunotherapy


Descriptive Note : Technical Report,30 Sep 2016,29 Sep 2017


Corporate Author : Johns Hopkins University Baltimore United States


Personal Author(s) : Nelkin, Barry


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1050866.pdf


Report Date : 01 Oct 2017


Pagination or Media Count : 16


Abstract : Our project will establish the role of CDK5 in promoting the immunosuppressive microenvironment in prostate cancer, and identify optimal strategies for incorporation of CDK5 inhibition to augment the efficacy of immunotherapy for prostate cancer. We will confirm our observation of the involvement of a T cell antitumor response in impaired growth of prostate cancer in immunocompetent murine models of prostate cancer, and characterize the changes induced in immune cells in the tumors. Preclinical translational studies, employing a CDK5 inhibitor in combination with immunotherapies, including immune checkpoint blockers, a prostate cancer vaccine, and other agents will be conducted and optimized in vivo in an immunocompetent prostate cancer model. If successful, these therapeutic strategies can be rapidly advanced to clinical evaluation. In this reporting period, our most significant finding was that Cdk5 gene silencing by shRNA in the TRAMP-C2 prostate cancer cell line sensitized allografts to combined immune checkpoint blockade, using anti-CTLA4 and anti-PD-1 antibodies. The significance of this finding is that it provides a promising potential therapeutic strategy for prostate cancer, using a combination of CDK5 inhibition and immune checkpoint blockade.


Descriptors :   immunotherapy , prostate cancer , neoplasms , t lymphocytes , inhibitors , vaccines , models , cell line , genes , antibodies


Subject Categories : Medicine and Medical Research
      Pharmacology


Distribution Statement : APPROVED FOR PUBLIC RELEASE