Male Urogenital Diseases Commons^™

Erbeta Regulation Of Nf-Kb Activation In Prostate Cancer Is Mediated By Hif-1, Paul Mak, Jiarong Li, Sanjoy Samanta, Arthur M. Mercurio

Arthur M. Mercurio

We examined the regulation of NF-kappaB in prostate cancer by estrogen receptor beta (ERbeta) based on the inverse correlation between p65 and ERbeta expression that exists in prostate carcinomas and reports that ERbeta can inhibit NF-kappaB activation, although the mechanism is not known. We demonstrate that ERbeta functions as a gate-keeper for NF-kappaB p65 signaling by repressing its expression and nuclear translocation. ERbeta regulation of NF-kappaB signaling is mediated by HIF-1. Loss of ERbeta or hypoxia stabilizes HIF-1alpha, which we found to be a direct driver of IKKbeta transcription through a hypoxia response element present in the promoter of the …

Current Opinion In The Role Of Testosterone In The Development Of Prostate Cancer: A Dynamic Model, Xiaohui Xu, Xinguang Chen, Hui Hu, Amy B. Dailey, Brandie D. Taylor

Health Sciences Faculty Publications

Background: Since the landmark study conducted by Huggins and Hodges in 1941, a failure to distinguish between the role of testosterone in prostate cancer development and progression has led to the prevailing opinion that high levels of testosterone increase the risk of prostate cancer. To date, this claim remains unproven.

Presentation of the Hypothesis: We present a novel dynamic mode of the relationship between testosterone and prostate cancer by hypothesizing that the magnitude of age-related declines in testosterone, rather than a static level of testosterone measured at a single point, may trigger and promote the development of prostate cancer.

Testing …