| Literature DB >> 2371289 |
R M Ruprecht1, S Mullaney, L D Bernard, M A Gama Sosa, R C Hom, R W Finberg.
Abstract
We tested 3'-azido-3'-deoxythymidine (zidovudine) combined with interferon alpha as chemoprophylaxis after exposing mice to Rauscher murine leukemia virus. Therapy started 4 hr after inoculation and administered for 20 days prevented viremia and disease in all 234 mice tested. When the animals were rechallenged with live virus after cessation of therapy, 96% were resistant. The nature of this protective immune response was analyzed: Passive serotherapy of naive mice challenged subsequently with Rauscher murine leukemia virus was only protective at a high dose of immune serum. Immune, but not naive, T cells alone were fully protective against virus challenge. We conclude that vaccination with a live retrovirus that cannot replicate because of pharmacological blockade induces a T-cell response capable of protecting against a lethal retrovirus-induced disease.Entities:
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Year: 1990 PMID: 2371289 PMCID: PMC54364 DOI: 10.1073/pnas.87.14.5558
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205