Androgen-regulated proliferation and gene transcription in a prostate smooth muscle cell line (PS-1)

Endocrinology
M J GerdesD R Rowley

Abstract

Androgens play a key role in directing stromal-epithelial interactions in prostate gland development, in maintenance of adult phenotype, and in disease progression. To address the molecular mechanisms of androgen action in prostate stromal cells and the genes regulated by androgens in this cell type, a stromal cell line (PS-1) was developed from rat ventral prostate. The PS-1 cell line was adapted to chemically defined media and characterized as smooth muscle based on expression of desmin, smooth muscle alpha-actin, and nuclear androgen receptor, markers for prostate smooth muscle. To examine steroid hormone regulation, PS-1 cells were analyzed for response to a panel of steroid hormones in serum-free, chemically defined media. PS-1 cells were significantly growth stimulated by physiological concentrations of androgens (10nM) relative to other steroids tested. To ascertain whether this cell line could be used to examine androgen-regulated gene expression, differential display PCR was used to demonstrate the presence of androgen-regulated transcripts and provide the initial steps in cloning these genes. Replicate differential display PCR analyses showed consistent androgen stimulation of 16 messenger RNA species. Northern analys...Continue Reading

Citations

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