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Journal of Virology, August 2004, p. 7984-7989, Vol. 78, No. 15
0022-538X/04/$08.00+0     DOI: 10.1128/JVI.78.15.7984-7989.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.

Functional Antagonism of Chemokine Receptor CCR1 Reduces Mortality in Acute Pneumovirus Infection In Vivo

Cynthia A. Bonville,1 Vincent K. Lau,1 Jordana M. DeLeon,2 Ji-Liang Gao,2 Andrew J. Easton,3 Helene F. Rosenberg,4 and Joseph B. Domachowske1*

Department of Pediatrics, SUNY Upstate Medical University, Syracuse, New YorkLaboratories of,1 Host Defenses,2 Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland,4 Department of Biological Sciences, University of Warwick, Coventry, United Kingdom3

Received 3 January 2004/ Accepted 1 April 2004

We present an antiviral-immunomodulatory therapeutic strategy involving the chemokine receptor antagonist Met-RANTES, which yields significant survival in the setting of an otherwise fatal respiratory virus infection. In previous work, we demonstrated that infection with the natural rodent pathogen pneumonia virus of mice involves robust virus replication accompanied by cellular inflammation modulated by the CC chemokine macrophage inflammatory protein 1{alpha} (MIP-1{alpha}). We found that the antiviral agent ribavirin limited virus replication in vivo but had no impact on morbidity and mortality associated with this disease in the absence of immunomodulatory control. We show here that ribavirin reduces mortality, from 100% to 10 and 30%, respectively, in gene-deleted CCR1–/– mice and in wild-type mice treated with the small-molecule chemokine receptor antagonist, Met-RANTES. As MIP-1{alpha}-mediated inflammation is a common response to several distantly related respiratory virus pathogens, specific antiviral therapy in conjunction with blockade of the MIP-1{alpha}/CCR1 inflammatory cascade may ultimately prove to be a useful, generalized approach to severe respiratory virus infection and its pathological sequelae in human subjects.

* Corresponding author. Mailing address: Department of Pediatrics, SUNY Upstate Medical University, 750 East Adams St., Syracuse, NY 13210. Phone: (315) 464-7505. Fax: (315) 464-7564. E-mail: domachoj{at}upstate.edu.

Journal of Virology, August 2004, p. 7984-7989, Vol. 78, No. 15
0022-538X/04/$08.00+0     DOI: 10.1128/JVI.78.15.7984-7989.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.



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