Transmissible gastroenteritis virus (TGEV)-based vectors with engineered murine tropism express the rotavirus VP7 protein and immunize mice against rotavirus

A coronavirus vector based on the genome of the porcine transmissible gastroenteritis virus (TGEV) expressing the rotavirus VP7 protein was constructed to immunize and protect against rotavirus infections in a murine model. The tropism of this TGEV-derived vector was modified by replacing the spike S protein with the homologous protein from mouse hepatitis virus (MHV). The rotavirus gene encoding the VP7 protein was cloned into the coronavirus cDNA. BALB/c and STAT1-deficient mice were inoculated with the recombinant viral vector rTGEVS-MHV-VP7, which replicates in the intestine and spreads to other organs such as liver, spleen and lungs. TGEV-specific antibodies were detected in all the inoculated BALB/c mice, while rotavirus-specific antibodies were found only after immunization by the intraperitoneal route. Partial protection against rotavirus-induced diarrhea was achieved in suckling BALB/c mice born to dams immunized with the recombinant virus expressing VP7 when they were orally challenged with the homotypic rotavirus strain. © 2010 Elsevier Inc.

Bibliographic Details

Main Authors:	Ribes, J. M., Ortego, J., Ceriani, J., Montava, R., Enjuanes, L., Buesa, J.
Format:	artículo biblioteca
Language:	English
Published:	Elsevier 2011
Subjects:	Transmissible gastroenteritis virus, Viral vectors, Tropism, Rotavirus, Diarrhea, Protection,
Online Access:	http://hdl.handle.net/20.500.12792/3709 http://hdl.handle.net/10261/291295
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