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Animal: RNA Viruses |
Center for Emerging Infectious Diseases, Departments of Pathology1, Medicine2 and Biology and Molecular Genetics and Microbiology3, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA
Author for correspondence: Brian Hjelle (at Department of Pathology). Fax +1 505 272 9912. e-mail bhjelle{at}salud.unm.edu
We used a deer mouse (Peromyscus maniculatus) infection model to test the protective efficacy of genetic vaccine candidates for Sin Nombre (SN) virus that were known to provoke immunological responses in BALB/c mice (Bharadwaj et al., Vaccine 17, 28362843, 1999 ). Protective epitopes were localized in each of four overlapping cDNA fragments that encoded portions of the SN virus G1 glycoprotein antigen; the nucleocapsid gene also was protective. The protective efficacy of glycoprotein gene fragments correlated with splenocyte proliferation in the presence of cognate antigen, but none induced neutralizing antibodies. Genetic vaccines against SN virus can protect outbred deer mice from infection even in the absence of a neutralizing antibody response.
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