Hepatitis D virus infection, replication and cross-talk with the hepatitis B virus
Hepatitis D virus infection, replication and cross-talk with the hepatitis B virus作者机构：Institute of Microbiology and Immunology National Yang-Ming University Department and Institute of Biomedical Sciences College of Medicine Chang Gung University Graduate Institute of Biomedical Sciences College of Medicine Chang Gung University
出 版 物：《World Journal of Gastroenterology》 (世界胃肠病学杂志（英文版）)
年 卷 期：2014年第20卷第40期
页 面：14589-14597页
核心收录：
学科分类：1004[医学-公共卫生与预防医学(可授医学、理学学位)] 1002[医学-临床医学] 100401[医学-流行病与卫生统计学] 10[医学]
基 金：Supported by Grants(CMRPD-1C0811)from Chang Gung Memorial Hospital the National Science Council and the National Health Research Institute to Lo SJ
主 题：Hepatitis B virus Hepatitis D virus Posttranslatio
摘 要：Viral hepatitis remains a worldwide public health problem.The hepatitis D virus(HDV)must either coinfect or superinfect with the hepatitis B virus(HBV).HDV contains a small RNA genome(approximately 1.7 kb)with a single open reading frame(ORF)and requires HBV supplying surface antigens(HBsAgs)to assemble a new HDV virion.During HDV replication,two isoforms of a delta antigen,a small delta antigen(SDAg)and a large delta antigen(LDAg),are produced from the same ORF of the HDV genome.The SDAg is required for HDV replication,whereas the interaction of LDAg with HBsAgs is crucial for packaging of HDV RNA.Various clinical outcomes of HBV/HDV dual infection have been reported,but the molecular interaction between HBV and HDV is poorly understood,especially regarding howHBV and HDV compete with HBsAgs for assembling virions.In this paper,we review the role of endoplasmic reticulum stress induced by HBsAgs and the molecular pathway involved in their promotion of LDAg nuclear export.Because the nuclear sublocalization and export of LDAg is regulated by posttranslational modifications(PTMs),including acetylation,phosphorylation,and isoprenylation,we also summarize the relationship among HBsAg-induced endoplasmic reticulum stress signaling,LDAg PTMs,and nuclear export mechanisms in this review.
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