PMID- 26816736 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20160128 LR - 20201001 IS - 2223-4691 (Print) IS - 2223-4691 (Electronic) IS - 2223-4683 (Linking) VI - 2 IP - 3 DP - 2013 Sep TI - Androgen receptor-mediated non-genomic regulation of prostate cancer cell proliferation. PG - 187-96 LID - 10.3978/j.issn.2223-4683.2013.09.07 [doi] AB - Androgen receptor (AR)-mediated signaling is necessary for prostate cancer cell proliferation and an important target for therapeutic drug development. Canonically, AR signals through a genomic or transcriptional pathway, involving the translocation of androgen-bound AR to the nucleus, its binding to cognate androgen response elements on promoter, with ensuing modulation of target gene expression, leading to cell proliferation. However, prostate cancer cells can show dose-dependent proliferation responses to androgen within minutes, without the need for genomic AR signaling. This proliferation response known as the non-genomic AR signaling is mediated by cytoplasmic AR, which facilitates the activation of kinase-signaling cascades, including the Ras-Raf-1, phosphatidyl-inositol 3-kinase (PI3K)/Akt and protein kinase C (PKC), which in turn converge on mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinase (ERK) activation, leading to cell proliferation. Further, since activated ERK may also phosphorylate AR and its coactivators, the non-genomic AR signaling may enhance AR genomic activity. Non-genomic AR signaling may occur in an ERK-independent manner, via activation of mammalian target of rapamycin (mTOR) pathway, or modulation of intracellular Ca(2+) concentration through plasma membrane G protein-coupled receptors (GPCRs). These data suggest that therapeutic strategies aimed at preventing AR nuclear translocation and genomic AR signaling alone may not completely abrogate AR signaling. Thus, elucidation of mechanisms that underlie non-genomic AR signaling may identify potential mechanisms of resistance to current anti-androgens and help developing novel therapies that abolish all AR signaling in prostate cancer. FAU - Liao, Ross S AU - Liao RS AD - Department of Urology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390, USA. FAU - Ma, Shihong AU - Ma S AD - Department of Urology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390, USA. FAU - Miao, Lu AU - Miao L AD - Department of Urology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390, USA. FAU - Li, Rui AU - Li R AD - Department of Urology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390, USA. FAU - Yin, Yi AU - Yin Y AD - Department of Urology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390, USA. FAU - Raj, Ganesh V AU - Raj GV AD - Department of Urology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390, USA. LA - eng PT - Journal Article PT - Review PL - China TA - Transl Androl Urol JT - Translational andrology and urology JID - 101581119 PMC - PMC4708176 OTO - NOTNLM OT - Androgen receptor (AR) OT - ERK MAP kinases OT - cell proliferation OT - non-genomic signaling OT - prostate cancer COIS- Conflicts of Interest: The authors have no conflicts of interest to declare. EDAT- 2013/09/01 00:00 MHDA- 2013/09/01 00:01 PMCR- 2013/09/01 CRDT- 2016/01/28 06:00 PHST- 2016/01/28 06:00 [entrez] PHST- 2013/09/01 00:00 [pubmed] PHST- 2013/09/01 00:01 [medline] PHST- 2013/09/01 00:00 [pmc-release] AID - tau-02-03-187 [pii] AID - 10.3978/j.issn.2223-4683.2013.09.07 [doi] PST - ppublish SO - Transl Androl Urol. 2013 Sep;2(3):187-96. doi: 10.3978/j.issn.2223-4683.2013.09.07.