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- Title
HLA class II antigen presentation by prostate cancer cells.
- Authors
Younger, A. R.; Amria, A.; Jeffrey, W. A.; Mahdy, A. E. M.; Goldstein, O. G.; Norris, J. S.; Haque, A.
- Abstract
Prostate cancer is the second most commonly diagnosed cancer in men. Recent evidence suggests that reduced expression of target protein antigens and human leukocyte antigen (HLA) molecules is the predominant immune escape mechanism of malignant prostate tumor cells. The purpose of this study was to investigate the prospect of antigen specific immunotherapy against prostate cancer via the HLA class II pathway of immune recognition. Here, we show for the first time that prostate cancer cells express HLA class II proteins that are recognized by CD4+ T cells. Prostate tumor cells transduced with class II molecules efficiently presented tumor-associated antigens/peptides to CD4+ T cells. This data suggests that malignant prostate tumors can be targeted via the HLA class II pathway, and that class II-positive tumors could be employed for direct antigen presentation, and CD4+ T-cell mediated tumor immunotherapy.Prostate Cancer and Prostatic Diseases (2008) 11, 334–341; doi:10.1038/sj.pcan.4501021; published online 16 October 2007
- Subjects
CANCER cells; PROSTATE-specific antigen; T cells; IMMUNOTHERAPY; HLA histocompatibility antigens; PROSTATE cancer
- Publication
Prostate Cancer & Prostatic Diseases, 2008, Vol 11, Issue 4, p334
- ISSN
1365-7852
- Publication type
Article
- DOI
10.1038/sj.pcan.4501021