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  • Title: Characterization of recombinant rabies virus carrying double glycoprotein genes.
    Author: Hosokawa-Muto J, Ito N, Yamada K, Shimizu K, Sugiyama M, Minamoto N.
    Journal: Microbiol Immunol; 2006; 50(3):187-96. PubMed ID: 16547416.
    Abstract:
    A recombinant rabies virus carrying double glycoprotein (G) genes, R(NPMGGL) strain, was generated by a reverse genetics system utilizing cloned cDNA of the RC-HL strain, and the biological properties of the virus were compared to those of the recombinant RC-HL (rRC-HL) strain. The extents of virus growth in cultured cells and virulence for adult mice of the R(NPMGGL) strain were almost same as those of the rRC-HL strain, while G protein content of the purified R(NPMGGL) virion and G protein expression level in R(NPMGGL)-infected cells were 1.5-fold higher than those of the rRC-HL strain. As a result of serial passages of the R(NPMGGL) strain in cultured cells, the expression level of G protein in cultured cells infected with the passaged R(NPMGGL) strain was maintained and virus titers rose with adaptation to the cultured cells. Furthermore, analysis of neutralization titers in mice immunized with UVinactivated virus suggested that the R(NPMGGL) strain had higher immunogenicity than that of the rRC-HL strain. The results suggest that the R(NPMGGL) strain carrying double G genes might be a useful candidate for development of a new inactivated rabies vaccine.
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