腺相关病毒Rep78/68蛋白功能的研究进展

摘要/Abstract

摘要： Rep78/68是腺相关病毒（AAV）基因组编码的具有多种调控功能的非结构蛋白。主要参与了AAV DNA定点整合到人类19号染色体，抑制病毒的生物活性，如腺病毒、类猿病毒SV40等，调节AAV DNA的复制和转录等。重点阐述了定点整合的作用机制，Rep78/AAV ITR /ICP8复合物的形成机制以及Rep68蛋白的寡聚化特性，Rep78蛋白对p53核输出的限制，AAV Rep78蛋白与人乳头瘤病毒（HPV）E1蛋白相互作用从而促使Rep78和ITR DNA的结合，Rep78对乙型肝炎病毒（HBV）的抑制。这些作用的详细机制仍需完善和充实，对Rep78/68蛋白的相关作用机制的深入研究有助于rAAV基因药物的研发。

关键词: AAV, Rep78, Rep68, p53, 机制

Abstract: Rep78/68, a type of nonstructural proteins encoded by adeno-associated virus（AAV）genome, have a variety of control functions. Rep78/68 promote the integration of AAV DNA site-specific into human chromosome 19, suppress the virus biological activity, such as adenovirus, simian virus 40, adjust the AAV DNA replication and transcription, etc. This paper mainly discusses the mechanism of site-specific integration, the mechanism of Rep78 / AAV ITR/ICP8 complex formation and the characteristics of the oligomerization of Rep68 protein, the limit of the nuclear output of p53 by Rep78 protein, the interaction between AAV Rep78 and human papilloma virus（HPV）E1 protein prompt the combination of Rep78 and ITR DNA, inhibition of the hepatitis B virus（HBV）by Rep78. While the detailed mechanism still remaines to be improved and enriched, further elucidatation of Rep78/68 protein related mechanism may improve the production technology of rAAV and develop gene drug based on rAAV, which has a great significance.

占申标, 吕颖慧, 李招发. 腺相关病毒Rep78/68蛋白功能的研究进展[J]. 生物技术通报, 2014, 0(2): 24-29.

Zhan Shenbiao, Lü Yinghui, Li Zhaofa,. Progress in the Research Regarding to the Function of Protein Rep78/68[J]. Biotechnology Bulletin, 2014, 0(2): 24-29.

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