Cookies on this website
We use cookies to ensure that we give you the best experience on our website. If you click 'Continue' we'll assume that you are happy to receive all cookies and you won't see this message again. Click 'Find out more' for information on how to change your cookie settings.

Stromal cells derived from collagenase-digested benign hyperplastic adult prostates were isolated and grown in culture. Androgen and oestrogen receptor status were determined and growth in response to mibolerone (a synthetic androgen) and oestradiol-17 beta was measured. In addition, the ability of oestrogens to regulate the androgen receptor in stromal cells was investigated. [3H]Thymidine incorporation into DNA was stimulated by mibolerone in primary and secondary cultures, but sensitivity was lost with subsequent passages. Androgen stimulation of [3H]thymidine incorporation was consistently inhibited by the anti-androgen cyproterone acetate. Oestradiol-17 beta also stimulated [3H]thymidine incorporation into DNA, and this effect was inhibited by the anti-oestrogen tamoxifen. Sensitivity to oestradiol was lost with subsequent passages. A combination of mibolerone and oestradiol was not synergistic in increasing [3H]thymidine incorporation into DNA, but maximal stimulation occurred at 100-fold lower concentrations of mibolerone and oestradiol when the two hormones were applied in combination. Specific high-affinity [3H]mibolerone- and [3H]oestradiol-binding sites were demonstrated by radioligand binding in intact cells. The affinity for oestradiol binding to its receptor exceeded that quantified for mibolerone binding to the androgen receptor, whilst the number of oestradiol-binding sites was approximately tenfold less than that quantified for mibolerone. Treatment with oestradiol down-regulated the number of [3H]mibolerone binding sites 1.7-fold (P < 0.005) as early as day 2 after oestradiol treatment. In conclusion, we successfully cultured stromal cells derived from hyperplastic prostates which retained sensitivity to androgen and oestrogen.(ABSTRACT TRUNCATED AT 250 WORDS)

Type

Journal article

Journal

J Endocrinol

Publication Date

11/1994

Volume

143

Pages

269 - 277

Keywords

Cells, Cultured, Estradiol, Humans, Male, Nandrolone, Prostate, Prostatic Hyperplasia, Protein Binding, Receptors, Androgen, Stimulation, Chemical, Tamoxifen, Testosterone Congeners