Clin Vaccine Immunol. 2009 Feb;16(2):285-7. Epub 2008 Nov 26.

Difference between the abilities of human Fcgamma receptor-expressing CV-1 cells to neutralize American and Asian genotypes of dengue virus 2.

Rodrigo WW, Alcena DC, Kou Z, Kochel TJ, Porter KR, Comach G, Rose RC, Jin X, Schlesinger JJ.

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Department of Pathology, University of Rochester School of Medicine and Dentistry, Rochester, New York 14642, USA.

Abstract

Sera from patients involved in a Peruvian outbreak of dengue virus serotype 1 infection cross-neutralized the American genotype of dengue virus serotype 2 up to 100-fold more efficiently than they did the virulent Asian genotype of dengue virus serotype 2, as determined by a plaque reduction neutralization test (PRNT) with CV-1 fibroblasts modified to express human Fcgamma receptor CD32. The concordant preferential immune enhancement of the Asian genotype of dengue virus serotype 2 in human monocytes suggests that such a modification might strengthen the correlation between the PRNT titer and protection.

PMID:: 19038781; [PubMed - indexed for MEDLINE]
PMCID: PMC2643537

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