PMID- 9269988 OWN - NLM STAT- MEDLINE DCOM- 19970909 LR - 20210103 IS - 0008-5472 (Print) IS - 0008-5472 (Linking) VI - 57 IP - 16 DP - 1997 Aug 15 TI - Characterization of prostatic epithelial cell lines derived from transgenic adenocarcinoma of the mouse prostate (TRAMP) model. PG - 3325-30 AB - To develop a syngeneic transplantable system to study immunotherapeutic approaches for the treatment of prostate cancer, three cell lines were established from a heterogeneous 32 week tumor of the transgenic adenocarcinoma mouse prostate (TRAMP) model. TRAMP is a transgenic line of C57BL/6 mice harboring a construct comprised of the minimal -426/+28 rat probasin promoter driving prostate-specific epithelial expression of the SV40 large T antigen. TRAMP males develop histological prostatic intraepithelial neoplasia by 8-12 weeks of age that progress to adenocarcinoma with distant metastases by 24-30 weeks of age. The three cell lines (TRAMP-C1, TRAMP-C2, and TRAMP-C3) express cytokeratin, E-cadherin, and androgen receptor by immunohistochemical analysis and do not appear to have a mutated p53. Although TRAMP-C1 and TRAMP-C2 are tumorigenic when grafted into syngeneic C57BL/6 hosts, TRAMP-C3 grows readily in vitro but does not form tumors. The T antigen oncoprotein is not expressed by the cell lines in vitro or in vivo. The rationale for establishing multiple cell lines was to isolate cells representing various stages of cellular transformation and progression to androgen-independent metastatic disease that could be manipulated in vitro and, in combination with the TRAMP model, provide a system to investigate therapeutic interventions, such as immunotherapy prior to clinical trials. FAU - Foster, B A AU - Foster BA AD - Department of Cell Biology, Baylor College of Medicine, Houston, Texas 77030, USA. FAU - Gingrich, J R AU - Gingrich JR FAU - Kwon, E D AU - Kwon ED FAU - Madias, C AU - Madias C FAU - Greenberg, N M AU - Greenberg NM LA - eng GR - CA58204/CA/NCI NIH HHS/United States GR - CA64851/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Cancer Res JT - Cancer research JID - 2984705R RN - 0 (Androgen-Binding Protein) RN - 0 (Antigens, Viral, Tumor) RN - 0 (Cadherins) RN - 0 (Neoplasm Proteins) RN - 0 (RNA, Messenger) RN - 0 (Receptors, Androgen) RN - 0 (Tumor Suppressor Protein p53) RN - 0 (probasin) RN - 68238-35-7 (Keratins) SB - IM MH - Adenocarcinoma/metabolism/*pathology MH - Androgen-Binding Protein/metabolism MH - Animals MH - Antigens, Viral, Tumor/metabolism MH - Cadherins/metabolism MH - Disease Progression MH - Keratins/metabolism MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, Transgenic MH - Neoplasm Proteins/metabolism MH - Prostatic Neoplasms/metabolism/*pathology MH - RNA, Messenger/metabolism MH - Receptors, Androgen/metabolism MH - Tumor Cells, Cultured/pathology MH - Tumor Stem Cell Assay MH - Tumor Suppressor Protein p53/metabolism EDAT- 1997/08/15 00:00 MHDA- 1997/08/15 00:01 CRDT- 1997/08/15 00:00 PHST- 1997/08/15 00:00 [pubmed] PHST- 1997/08/15 00:01 [medline] PHST- 1997/08/15 00:00 [entrez] PST - ppublish SO - Cancer Res. 1997 Aug 15;57(16):3325-30.