國家衛生研究院 NHRI:Item 3990099045/4908

NHRI > National Institute of Infectious Diseases and Vaccinology > Ih-Jen Su(2002-2015) > Periodical Articles > Item 3990099045/4908

Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/4908

Title:	Hepatitis B virus surface antigen interacts with acid alpha-glucosidase and alters glycogen metabolism
Authors:	Hung, JH;Yan, CW;Su, IJ;Wang, HC;Lei, HY;Lin, WC;Chang, WT;Huang, WY;Lu, TJ;Lai, MD
Contributors:	Division of Infectious Diseases
Abstract:	Aim: Hepatitis B virus (HBV) infection is highly correlated with hepatocellular carcinoma. Previous studies have reported that expression of hepatitis B virus pre-S2 mutant surface antigen is related to hepatoma development. An aberrant carbohydrate metabolism is a hallmark of malignant transformation. Methods: We performed yeast two-hybrid screening with HBV pre-S2-del large surface protein (pre-S2 Delta) by using human liver cDNA library, and identified the acid alpha-glucosidase (acid alpha-glucosidase) as the novel cellular interacting protein of pre-S2 Delta. The association of pre-S2 Delta with the acid alpha-glucosidase was confirmed by confocal immunofluorescence and co-immunoprecipitation assay. Further, the acid alpha-glucosidase activity and glycogen content were analyzed in ML-1 cells expressing pre-S2 Delta. Results: The interaction between HBV large surface protein and acid alpha-glucosidase was demonstrated with co-immunoprecipitation in vitro and in vivo, and the binding was mediated through c-terminal region 889-952 amino acid of acid alpha-glucosidase. On the other hand, HBV large surface protein interacted with acid alpha-glucosidase through N-terminal region 1-157 amino acid of HBV large surface protein. Expression of HBV large surface protein enhanced acid alpha-glucosidase activity and resulted in decrease of cellular glycogen. Conclusion: Our result demonstrates that HBV large surface protein interacts with acid alpha-glucosidase which plays an important role in glycogen balance. Together, these data suggest a novel pathway by which HBV large surface protein affects carbohydrate metabolism.
Date:	2010-06
Relation:	Hepatology Research. 2010 Jun;40(6):633-640.
Link to:	http://dx.doi.org/10.1111/j.1872-034X.2010.00645.x
JIF/Ranking 2023:	http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=1386-6346&DestApp=IC2JCR
Cited Times(WOS):	https://www.webofscience.com/wos/woscc/full-record/WOS:000278077500009
Cited Times(Scopus):	http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=77954372870
Appears in Collections:	[Ih-Jen Su(2002-2015)] Periodical Articles

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