Establishment of an androgen-responsive prostatic cell line "PEA5" from a p53-deficient mouse.
BACKGROUND
We demonstrated that p53-deficiency is sufficient for the establishment of clonal cell lines from the uterus and prostate. In the present study, we improved cloning methods to establish androgen-responsive cell lines.


METHODS
In our previous study, a prostatic cell line was established from the ventral prostate of a p53-deficient mouse and was maintained in a medium containing heat-inactivated fetal calf serum at 10% supplemented with insulin (10 microg/ml), transferrin (10 microg/ml), cholera toxin (10 ng/ml) and selenium (10(-8) M). In the present study, 5alpha-dihydrotestosterone (10(-8) M) was added to the medium from the beginning of cloning procedures.


RESULTS
We succeeded in the establishment of an androgen receptor positive prostatic cell line, designated PEA5. PEA5 cells exhibited a typical epithelial morphology in culture and growth was stimulated by androgens in a dose-dependent manner. In addition, they grew and formed three-dimensional structures in collagen gel, in which growth was also stimulated by androgen.


CONCLUSIONS
Although PEA5 lacks p53 gene, it still retains androgen sensitivity. In collagen gel culture, PEA5 cells can grow and form three-dimensional structures similar to those of the primary cultures reported previously. Furthermore, prostates of p53-deficient mice are shown to be useful sources for obtaining androgen-responsive cells lines.
Hanazono
M
M
Department of Clinical Research of Ichihara Hospital, School of Medicine, Teikyo University, Chiba, Japan.
Nozawa
R
R
Itakura
R
R
Aizawa
S
S
Tomooka
Y
Y
D000818:Animals; D018929:Cell Culture Techniques; D002455:Cell Division / Q000187:drug effects; D002460:Cell Line; D016895:Culture Media, Serum-Free; D013196:Dihydrotestosterone / Q000494:pharmacology*; D007150:Immunohistochemistry; D008297:Male; D051379:Mice; D011467:Prostate / Q000166:cytology* / Q000187:drug effects* / Q000378:metabolism; D011987:Receptors, Steroid / Q000378:metabolism; D016159:Tumor Suppressor Protein p53 / Q000172:deficiency*
D016895:Culture Media, Serum-Free; D011987:Receptors, Steroid; D016159:Tumor Suppressor Protein p53; D013196:Dihydrotestosterone