title: Prostate specific antigen gene expression in androgen insensitive prostate carcinoma subculture cell line.
abstract: A novel prostate cancer cell line (PC-J) was isolated from an androgen independent non-prostate specific antigen (non-PSA) producing carcinoma cell line. The homologous correlation between PC-J and PC-3 was determined by short tandem repeat analysis. The PSA promoter activity was detected by transient expression assay in the PC-J and LNCaP cells but not in androgen insensitive PC-3 cells. When the PC-J cells were cotransfected with androgen receptor, androgen receptor coactivators and PSA reporter vector cells, the reporter assays indicated that nuclear receptor coactivator 4 (NCOA4) but not androgen receptor activator 24 (ARA24) increased the sensitivity and maximum stimulation of dihydrotestosterone (DHT)-inducing PSA promoter activity. The RT-PCR assays revealed that the expression of several tumor markers, including interleukin-6, prostate stem cell antigen (PSCA), prostate epithelium-specific Ets transcription factor (PDEF) and matriptase, was lower in the PC-J cells than in the PC-3 cells. This cell model elucidated the regulation of PSA expression and enabled comparison of the gene profile at different stages of metastasis in prostatic carcinoma.
authors.affiliation: Department of Urology, Chang Gung Memorial Hospital, Kwei-Shan, Tao-Yua, Taiwan, ROC.
authors.forename: Ke-Hung
authors.initials: KH
authors.lastname: Tsui
authors.forename: Tsui-Hsia
authors.initials: TH
authors.lastname: Feng
authors.forename: Li-Chuan
authors.initials: LC
authors.lastname: Chung
authors.forename: Chun-Hsiang
authors.initials: CH
authors.lastname: Chao
authors.forename: Phei-Lang
authors.initials: PL
authors.lastname: Chang
authors.forename: Horng-Heng
authors.initials: HH
authors.lastname: Juang
mesh_terms: D045744:Cell Line, Tumor; D013196:Dihydrotestosterone / Q000494:pharmacology; D020869:Gene Expression Profiling; D015972:Gene Expression Regulation, Neoplastic; D005822:Genetic Vectors / Q000235:genetics; D006801:Humans; D008156:Luciferases / Q000096:biosynthesis / Q000235:genetics; D008297:Male; D009376:Neoplasms, Hormone-Dependent / Q000235:genetics / Q000378:metabolism; D011401:Promoter Regions, Genetic; D017430:Prostate-Specific Antigen / Q000096:biosynthesis / Q000235:genetics*; D011471:Prostatic Neoplasms / Q000235:genetics* / Q000378:metabolism; D011944:Receptors, Androgen / Q000096:biosynthesis / Q000235:genetics; D014162:Transfection
chemical_list: D011944:Receptors, Androgen; D013196:Dihydrotestosterone; D008156:Luciferases; D017430:Prostate-Specific Antigen