Article: Role of prostate stem cell antigen in prostate cancer research.
2002 Volume 12, Issue 5, Page(s) 401–406
Abstract: Purpose of review: The identification of cell surface antigens is critical to the development of future prognostic and therapeutic modalities for the treatment of prostate cancer. Several prostate-specific proteins have been identified and are under ... ...
| Abstract | Purpose of review: The identification of cell surface antigens is critical to the development of future prognostic and therapeutic modalities for the treatment of prostate cancer. Several prostate-specific proteins have been identified and are under investigation. This review reports on prostate stem cell antigen (PSCA), a protein with restricted expression that may have prognostic and therapeutic utility. Recent findings: PSCA is a glycosylphosphatidylinositol-anchored cell-surface protein belonging to the Ly-6/Thy-1 family of cell surface antigens, and a murine homologue has been described. It is expressed in the normal human prostate and overexpressed in human prostate cancers. Its overexpression has been correlated with increased Gleason score, advanced stage and bone metastasis. PSCA is co-amplified with MYC, an independent predictor of progression and death. PSCA may therefore be a useful predictor of tumor biology and a useful target of immunotherapy against prostate cancer. Evidence suggests a potential role in strategies employing cytotoxic T cell lymphocytes. Anti-tumor activity has been demonstrated with monoclonal antibodies in tumor take and established tumor xenograft models. Conjugated antibody has recently been reported to have anti-tumor activity in preclinical models. Summary: PSCA may serve as a tool in refining the prognosis of an individual cancer and may be a useful therapeutic target for immunotherapy. Future studies will be required to confirm its clinical utility as a prognostic factor. Future animal and clinical studies will be required to test various immunotherapy strategies for safety and efficacy. The study of PSCA regulation and expression may provide information on normal prostate development and prostate carcinogenesis. |
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| MeSH term(s) | Antigens, Neoplasm ; Biomedical Research ; GPI-Linked Proteins ; Humans ; Male ; Membrane Glycoproteins/genetics ; Membrane Glycoproteins/therapeutic use ; Neoplasm Proteins/genetics ; Neoplasm Proteins/therapeutic use ; Prostatic Neoplasms/genetics ; Prostatic Neoplasms/therapy |
| Chemical Substances | Antigens, Neoplasm ; GPI-Linked Proteins ; Membrane Glycoproteins ; Neoplasm Proteins ; PSCA protein, human |
| Language | English |
| Publishing date | 2002-08-09 |
| Publishing country | United States |
| Document type | Journal Article ; Review |
| ZDB-ID | 1091792-5 |
| ISSN | 1473-6586 ; 0963-0643 |
| ISSN (online) | 1473-6586 |
| ISSN | 0963-0643 |
| DOI | 10.1097/00042307-200209000-00006 |
| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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