A transgenic animal with antiviral properties that might inhibit multiple stages of infection
Antiviral Research(2013)
摘要
Bombyx mori nucleopolyhedrovirus (BmNPV) is the primary pathogen of silkworms, causing severe economic losses in sericulture. To create antiviral silkworm strains, we constructed a transgenic vector in which the dsRNA for five tandem BmNPV genes was controlled by the BmNPV hr3 enhancer and IE1 promoter. The antivirus gene Bmlipase-1 was driven by B. mori midgut-specific promoter P2. Transgenic strains (SW-H) were generated via embryo microinjection using the practical silkworm strain SW. After infection with a high dose of BmNPV, the survival rates of SW-H and non-transgenic SW were 64% and 13%, respectively. SW-H could be the first transgenic animal that is highly antiviral and that might inhibit the virus at multiple stages of infection.
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关键词
Antivirus,BmNPV,RNAi,Overexpression,Silkworm,Transgenic
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