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• W2161919679 endingPage "312" @default.
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• W2161919679 abstract "Recently, a novel melatonin MT(1) receptor-mediated antiproliferative signaling mechanism involving transcriptional up-regulation of p27(Kip1) due to paralleled stimulation of protein kinase A (PKA) and protein kinase C (PKC), as a result of respective dual activation of upstream Gα(s) and Gα(q) , has been reported in 22Rv1 and RWPE-1 human prostate epithelial cells. Here, we demonstrate that melatonin inhibits the proliferation of LNCaP and VCaP prostate cancer cells via activation of the same MT(1) receptor-mediated antiproliferative signaling pathway. Knockdown of the expression of wild-type androgen receptor (AR) and/or structural/functional AR variants in LNCaP, VCaP, 22Rv1, and RWPE-1 cells resulted in abrogation of melatonin receptor-mediated antiproliferation, indicating that the antiproliferative signaling pathway MT(1) /(Gα(s) ) PKA + (Gα(q) ) PKC/p27(Kip1) activated by melatonin in human prostate epithelial cells is AR dependent. Furthermore, melatonin was shown to decrease androgen/AR-mediated transactivation of the prostate-specific antigen promoter in the prostate epithelial cell lines. Together, our data indicate the presence of reciprocal functional interactions between MT(1) receptor and AR signaling in malignant and nontumorigenic prostate epithelial cells. Notably, the dual actions of the MT(1) receptor-mediated antiproliferative signaling, leading to down-regulation of activated AR signaling and up-regulation of p27(Kip1) , constitute the mechanistic basis for the potential use of melatonin in chemoprevention of prostate cancer, as well as in a novel therapeutic strategy, comprising a combination of melatonin repletion and androgen depletion, for the treatment of advanced or relapsed disease." @default.
• W2161919679 created "2016-06-24" @default.
• W2161919679 creator A5032952633 @default.
• W2161919679 creator A5062557960 @default.
• W2161919679 date "2011-05-24" @default.
• W2161919679 modified "2023-10-02" @default.
• W2161919679 title "Functional interplay between melatonin receptor-mediated antiproliferative signaling and androgen receptor signaling in human prostate epithelial cells: potential implications for therapeutic strategies against prostate cancer" @default.
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• W2161919679 doi "https://doi.org/10.1111/j.1600-079x.2011.00890.x" @default.
• W2161919679 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/21605164" @default.
• W2161919679 hasPublicationYear "2011" @default.
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