Journal of Biochemistry Advance Access originally published online on January 7, 2008
Journal of Biochemistry 2008 143(4):537-545; doi:10.1093/jb/mvm248
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© 2008 The Japanese Biochemical Society.
Annexin A3 Expression Increases in Hepatocytes and is Regulated by Hepatocyte Growth Factor in Rat Liver Regeneration
1Department of Nutrition and Physiology, Nihon University College of Bioresource Sciences, Kameino Fujisawa 252-8510; and 2Division of Biological Chemistry and Biologicals, National Institute of Health Sciences, 1-18-1 Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
*To whom correspondence should be addressed. Tel: +81-3-3700-9347, Fax: +81-3-3700-9084, E-mail: niimi{at}nihs.go.jp
Received November 14, 2007; Accepted December 18, 2007
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Annexin (Anx) A3 increases and plays important roles in the signalling cascade in hepatocyte growth in cultured hepatocytes. However, no information is available on its expression and role in rat liver regeneration. In the present study, AnxA3 expression was investigated to determine whether it also plays a role in the signalling cascade in rat liver regeneration. AnxA3 protein and mRNA level both increase in liver after administration of carbon tetrachloride (CCl4) or 70% partial hepatectomy. AnxA3 protein level increases in isolated parenchymal hepatocytes, but not in non-parenchymal liver cells, in these rat liver regeneration models. AnxA3 mRNA increases in hepatocytes after CCl4 administration. Anti-hepatocyte growth factor antibody suppresses this increase in AnxA3 mRNA level. These results demonstrate that AnxA3 expression increases in hepatocytes through a hepatocyte growth factor-mediated pathway in rat liver regeneration models, suggesting that AnxA3 plays an important role in the signalling cascade in rat liver regeneration.
Key Words: annexin A3, carbon tetrachloride, hepatocyte growth factor, parenchymal hepatocytes, partial hepatectomy
Abbreviations: Anx, Annexin; CCl4, carbon tetrachloride; HGF, hepatocyte growth factor