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  • Title: Molecular interplay between cdk4 and p21 dictates G0/G1 cell cycle arrest in prostate cancer cells.
    Author: Gulappa T, Reddy RS, Suman S, Nyakeriga AM, Damodaran C.
    Journal: Cancer Lett; 2013 Sep 01; 337(2):177-83. PubMed ID: 23684928.
    Abstract:
    This study examined the effect of 3, 9-dihydroxy-2-prenylcoumestan (pso), a furanocoumarin, on PC-3 and C4-2B castration-resistant prostate cancer (CRPC) cell lines. Pso caused significant G0/G1 cell cycle arrest and inhibition of cell growth. Molecular analysis of cyclin (D1, D2, D3, and E), cyclin-dependent kinase (cdk) (cdks 2, 4, and 6), and cdk inhibitor (p21 and p27) expression suggested transcriptional regulation of the cdk inhibitors and more significant downregulation of cdk4 than of cyclins or other cdks. Overexpression of cdk4, or silencing of p21 or p27, overcame pso-induced G0/G1 arrest, suggesting that G0/G1 cell cycle arrest is a potential mechanism of growth inhibition in CRPC cells.
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