Rotaviruses: Extraction and Isolation of RNA, Reassortant Strains, and NSP4 Protein

Current Protocols in Microbiology
Krystle A YaksheJudith M Ball

Abstract

Rotavirus (RV) contains 11 double-stranded RNA segments that encode for twelve structural and nonstructural proteins. The separation and isolation of viral RNA is a necessary precursor for many experimental techniques and can be useful for rapid RV RNA typing and sequencing of different rotavirus strains. The segmented genome enables RV to recombine easily. These recombinant viruses are essential for many purposes, including generation of potential vaccine strains. Rotavirus gene 10 expresses the viral enterotoxin, NSP4, which has been the focus of several studies due to the influence of NSP4 on rotavirus replication, morphogenesis, and pathogenesis. This unit will describe the isolation and separation of viral RNAs, the production characterization of recombinant RV in culture, and the expression and isolation of NSP4 in mammalian and insect cells.

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