Title : DHT selectively reverses Smad3-mediated/TGF-beta-induced responses through transcriptional down-regulation of Smad3 in prostate epithelial cells.

Pub. Date : 2010 Oct

PMID : 20739403






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1 DHT selectively reverses Smad3-mediated/TGF-beta-induced responses through transcriptional down-regulation of Smad3 in prostate epithelial cells. Dihydrotestosterone transforming growth factor beta 1 Homo sapiens
2 We have recently reported that 5alpha-dihydrotestosterone (DHT) suppresses the ability of TGF-beta to inhibit proliferation and induce apoptosis of prostatic epithelial cells and provided evidence that such suppression was fueled by transcriptional down-regulation of TGF-beta receptor II (TaubetaRII). Dihydrotestosterone transforming growth factor beta 1 Homo sapiens
3 We have recently reported that 5alpha-dihydrotestosterone (DHT) suppresses the ability of TGF-beta to inhibit proliferation and induce apoptosis of prostatic epithelial cells and provided evidence that such suppression was fueled by transcriptional down-regulation of TGF-beta receptor II (TaubetaRII). Dihydrotestosterone transforming growth factor beta 1 Homo sapiens
4 We have recently reported that 5alpha-dihydrotestosterone (DHT) suppresses the ability of TGF-beta to inhibit proliferation and induce apoptosis of prostatic epithelial cells and provided evidence that such suppression was fueled by transcriptional down-regulation of TGF-beta receptor II (TaubetaRII). Dihydrotestosterone transforming growth factor beta 1 Homo sapiens
5 We have recently reported that 5alpha-dihydrotestosterone (DHT) suppresses the ability of TGF-beta to inhibit proliferation and induce apoptosis of prostatic epithelial cells and provided evidence that such suppression was fueled by transcriptional down-regulation of TGF-beta receptor II (TaubetaRII). Dihydrotestosterone transforming growth factor beta 1 Homo sapiens
6 We now show that androgen receptor (AR) activated by DHT suppresses the TGF-beta-induced phosphorylation of Sma- and Mad-related protein (Smad)3 in LNCaP cells overexpressing TbetaRII under the control of a cytomegalovirus promoter, which is not regulated by DHT, suggesting that transcriptional repression of TbetaRII alone does not fully account for the impact of DHT on TGF-beta responses. Dihydrotestosterone transforming growth factor beta 1 Homo sapiens
7 We now show that androgen receptor (AR) activated by DHT suppresses the TGF-beta-induced phosphorylation of Sma- and Mad-related protein (Smad)3 in LNCaP cells overexpressing TbetaRII under the control of a cytomegalovirus promoter, which is not regulated by DHT, suggesting that transcriptional repression of TbetaRII alone does not fully account for the impact of DHT on TGF-beta responses. Dihydrotestosterone transforming growth factor beta 1 Homo sapiens
8 We now show that androgen receptor (AR) activated by DHT suppresses the TGF-beta-induced phosphorylation of Sma- and Mad-related protein (Smad)3 in LNCaP cells overexpressing TbetaRII under the control of a cytomegalovirus promoter, which is not regulated by DHT, suggesting that transcriptional repression of TbetaRII alone does not fully account for the impact of DHT on TGF-beta responses. Dihydrotestosterone transforming growth factor beta 1 Homo sapiens
9 We now show that androgen receptor (AR) activated by DHT suppresses the TGF-beta-induced phosphorylation of Sma- and Mad-related protein (Smad)3 in LNCaP cells overexpressing TbetaRII under the control of a cytomegalovirus promoter, which is not regulated by DHT, suggesting that transcriptional repression of TbetaRII alone does not fully account for the impact of DHT on TGF-beta responses. Dihydrotestosterone transforming growth factor beta 1 Homo sapiens
10 Moreover, we show that overexpression of Smad3 reverses the ability of DHT to protect against TGF-beta-induced apoptosis in NRP-154+AR, supporting our model that loss of Smad3 by DHT is involved in the protection against TGF-beta-induced apoptosis. Dihydrotestosterone transforming growth factor beta 1 Homo sapiens
11 Moreover, we show that overexpression of Smad3 reverses the ability of DHT to protect against TGF-beta-induced apoptosis in NRP-154+AR, supporting our model that loss of Smad3 by DHT is involved in the protection against TGF-beta-induced apoptosis. Dihydrotestosterone transforming growth factor beta 1 Homo sapiens
12 Moreover, we show that overexpression of Smad3 reverses the ability of DHT to protect against TGF-beta-induced apoptosis in NRP-154+AR, supporting our model that loss of Smad3 by DHT is involved in the protection against TGF-beta-induced apoptosis. Dihydrotestosterone transforming growth factor beta 1 Homo sapiens