Positive and negative effects of adenovirus type 5 helper functions on adeno-associated virus type 5 (AAV5) protein accumulation govern AAV5 virus production

被引:16
|
作者
Nayak, Ramnath [1 ]
Pintel, David J. [1 ]
机构
[1] Univ Missouri, Sch Med, Life Sci Ctr, Dept Mol Microbiol & Immunol, Columbia, MO 65211 USA
关键词
D O I
10.1128/JVI.02312-06
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Full replication of adeno-associated virus type 5 (AAV5) is sustained by adenovirus type 5 (AM) helper functions E1a, E1b, E2a, E4Orf6, and virus-associated (VA) RNA; however, their combined net enhancement of AAV5 replication was comprised of both positive and negative individual effects. Although Ad5 E4Orf6 was required for AAV5 genomic DNA replication, it also functioned together with E1b to degrade de novo-expressed, preassembled AAV5 capsid proteins and Rep52 in a proteosome-dependent manner. VA RNA enhanced accumulation of AAV5 protein, overcoming the degradative effects of E4Orf6, and was thus required to restore adequate amounts of AAV5 proteins necessary to achieve efficient virus production.
引用
收藏
页码:2205 / 2212
页数:8
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