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Biomed Res. 2013;34(5):269-73.

Role of p16(INK4a) in the inhibition of DNA synthesis stimulated by HGF or EGF in primary cultured rat hepatocytes.

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  • 1Department of Nutrition and Physiology, Nihon University College of Bioresource Sciences, Kameino Fujisawa 252-8510, Japan.

Abstract

In the present study, we investigated the role of p16(INK4a) in the inhibition of DNA synthesis stimulated by hepatocyte growth factor (HGF) or epidermal growth factor (EGF) using RNA interference in primary cultured rat hepatocytes. The transfection of small interfering RNAs targeting p16(INK4a) reduced the corresponding mRNA and protein expression by more than approximately 90% and 50%, respectively, at 24 h after transfection. In the cells transfected with p16(INK4a) small interfering RNA, control, HGF, and EGF-stimulated DNA synthesis as assessed by (3)H-thymidine incorporation increased by approximately 1.5-fold, 1.6-fold, and 1.7-fold, respectively, compared with that in the control small interfering RNA-transfected cells. These findings indicate that p16(INK4a) plays a significant role in the inhibition of DNA synthesis.

PMID:
24190239
[PubMed - indexed for MEDLINE]
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