期刊
JOURNAL OF VIROLOGY
卷 85, 期 12, 页码 5773-5781出版社
AMER SOC MICROBIOLOGY
DOI: 10.1128/JVI.00039-11
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资金
- NIH through NIGMS [GM56279]
- NSF [CHE07-14411]
- NIH [5T32GM008296-21, 5T32AI060567-07]
- NIH/NCRR [RR025761]
- Direct For Mathematical & Physical Scien [1051507] Funding Source: National Science Foundation
- Division Of Chemistry [1051507] Funding Source: National Science Foundation
Alphaviruses are small, spherical, enveloped, positive-sense, single-stranded, RNA viruses responsible for considerable human and animal disease. Using microinjection of preassembled cores as a tool, a system has been established to study the assembly and budding process of Sindbis virus, the type member of the alphaviruses. We demonstrate the release of infectious virus-like particles from cells expressing Sindbis virus envelope glycoproteins following microinjection of Sindbis virus nucleocapsids purified from the cytoplasm of infected cells. Furthermore, it is shown that nucleocapsids assembled in vitro mimic those isolated in the cytoplasm of infected cells with respect to their ability to be incorporated into enveloped virions following microinjection. This system allows for the study of the alphavirus budding process independent of an authentic infection and provides a platform to study viral and host requirements for budding.
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