An improved reverse genetics system for mammalian orthoreoviruses.

An improved reverse genetics system for mammalian orthoreoviruses.
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DOI:
10.1016/j.virol.2009.11.037
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发表时间:
2010-03-15
期刊:
影响因子:
3.7
通讯作者:
Dermody, Terence S.
Dermody, Terence S.
中科院分区:
医学3区
文献类型:
--
作者:
Kobayashi, Takeshi;Ooms, Laura S.;Ikizler, Mine;Chappell, James D.;Dermody, Terence S.

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Mammalian orthoreoviruses (reoviruses) are highly useful models for studies of double-stranded RNA virus replication and pathogenesis. We previously developed a strategy to recover prototype reovirus strain T3D from cloned cDNAs transfected into murine L929 fibroblast cells. Here, we report the development of a second-generation reovirus reverse genetics system featuring several major improvements: (1) the capacity to rescue prototype reovirus strain T1L, (2) reduction of required plasmids from ten to four, and (3) isolation of recombinant viruses following transfection of baby hamster kidney cells engineered to express bacteriophage T7 RNA polymerase. The efficiency of virus rescue using the 4-plasmid strategy was substantially increased in comparison to the original 10-plasmid system. We observed full compatibility of T1L and T3D rescue vectors when intermixed to produce a panel of T1L × T3D monoreassortant viruses. Improvements to the reovirus reverse genetics system enhance its applicability for studies of reovirus biology and clinical use.
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