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- W2264651662 abstract "// Honghe Wang 1 , Wei Liu 2 , ShaNekkia Black 1 , Omari Turner 1 , Juliet M. Daniel 5 , Windy Dean-Colomb 6 , Qinghua P. He 3 , Melissa Davis 4 , Clayton Yates 1 1 Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, AL, USA 2 Laboratory of Comparative Carcinogenesis, Cancer Center of Research, Frederick, MD, USA 3 Department of Chemical Engineering, Tuskegee University, Tuskegee, AL, USA 4 Department of Genetics, University of Georgia, Athens, GA, USA 5 Department of Biology, McMaster University, Hamilton, ON, Canada 6 Department of Oncologic Research, University Hospital and Clinics, Lafayette General Health, Lafayette, LA, USA Correspondence to: Clayton Yates, e-mail: cyates@mytu.tuskegee.edu Keywords: miRNA, Kaiso, DNA methylation, prostate cancer Received: July 10, 2015 Accepted: December 09, 2015 Published: December 30, 2015 ABSTRACT Kaiso, a member of the BTB/POZ zinc finger protein family, functions as a transcriptional repressor by binding to sequence-specific Kaiso binding sites or to methyl-CpG dinucleotides. Previously, we demonstrated that Kaiso overexpression and nuclear localization correlated with the progression of prostate cancer (PCa). Therefore, our objective was to explore the molecular mechanisms underlying Kaiso-mediated PCa progression. Comparative analysis of miRNA arrays revealed that 13 miRNAs were significantly altered (> 1.5 fold, p < 0.05) in sh-Kaiso PC-3 compared to sh-Scr control cells. Real-time PCR validated that three miRNAs (9, 31, 636) were increased in sh-Kaiso cells similar to cells treated with 5-aza-2′-deoxycytidine. miR-31 expression negatively correlated with Kaiso expression and with methylation of the miR-31 promoter in a panel of PCa cell lines. ChIP assays revealed that Kaiso binds directly to the miR-31 promoter in a methylation-dependent manner. Over-expression of miR-31 decreased cell proliferation, migration and invasiveness of PC-3 cells, whereas cells transfected with anti-miR-31 restored proliferation, migration and invasiveness of sh-Kaiso PC-3 cells. In PCa patients, Kaiso high/miR-31 low expression correlated with worse overall survival relative to each marker individually. In conclusion, these results demonstrate that Kaiso promotes cell migration and invasiveness through regulation of miR-31 expression." @default.
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- W2264651662 date "2015-12-30" @default.
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- W2264651662 title "Kaiso, a transcriptional repressor, promotes cell migration and invasion of prostate cancer cells through regulation of miR-31 expression" @default.
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- W2264651662 doi "https://doi.org/10.18632/oncotarget.6801" @default.
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