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Journal of Virology, August 2000, p. 7146-7150, Vol. 74, No. 15
0022-538X/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.

Release of Vasoactive Cytokines by Antibody-Enhanced Dengue Virus Infection of a Human Mast Cell/Basophil Line

Christine A. King,1 Jean S. Marshall,1,2 Hashem Alshurafa,1 and Robert Anderson1,*

Departments of Microbiology and Immunology1 and Pathology,2 Dalhousie University, Halifax, Nova Scotia B3H 4H7, Canada

Received 29 February 2000/Accepted 3 May 2000

We report here the first demonstration of dengue virus infection and vasoactive cytokine response of a cell of the mast cell/basophil lineage. Infection of KU812 cells was dependent on dengue-specific antibody and gave rise to infectious virions. This antibody-enhanced dengue virus infection triggered a four- to fivefold increase in the release of interleukin-1beta (IL-1beta ) and a modest increase for IL-6 but not for an alternate cytokine, granulocyte-macrophage colony-stimulating factor. The results suggest a potential role for mast cells/basophils in the pathogenesis of dengue virus-induced disease.


* Corresponding author. Mailing address: Department of Microbiology and Immunology, Dalhousie University, Halifax, Nova Scotia B3H 4H7, Canada. Phone: (902) 494-1063. Fax: (902) 494-5125. E-mail: Robert.Anderson{at}dal.ca.


Journal of Virology, August 2000, p. 7146-7150, Vol. 74, No. 15
0022-538X/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.



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