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J Virol. 1989 December; 63(12): 5086-5091

Dengue virus-specific cross-reactive CD8+ human cytotoxic T lymphocytes.

J F Bukowski, I Kurane, C J Lai, M Bray, B Falgout and F A Ennis

Department of Medicine, University of Massachusetts Medical Center, Worcester 01655.

ABSTRACT

Stimulation with live dengue virus of peripheral blood mononuclear cells from a dengue virus type 4-immune donor generated virus-specific, serotype-cross-reactive, CD8+, class I-restricted cytotoxic T lymphocytes (CTL) capable of lysing dengue virus-infected cells and cells pulsed with dengue virus antigens of all four serotypes. These CTL lysed autologous fibroblasts infected with vaccinia virus-dengue virus recombinant viruses containing the E gene or several nonstructural dengue virus type 4 genes. These results demonstrate that both dengue virus structural and nonstructural proteins are targets for the cytotoxic T-cell-mediated immune response to dengue virus and suggest that serotype-cross-reactive CD8+ CTL may be important mediators of viral clearance and of virus-induced immunopathology during secondary dengue virus infections.


J Virol. 1989 December; 63(12): 5086-5091




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