Dengue virus is a single-stranded, enveloped RNA virus that productively infects human dendritic cells (DCs) primarily at the immature stage of their differentiation. We now find that all four serotypes of dengue use DC-SIGN (CD209), a C-type lectin, to infect dendritic cells. THP-1 cells become susceptible to dengue infection after transfection of DC-specific ICAM-3 grabbing nonintegrin (DC-SIGN), or its homologue L-SIGN, whereas the infection of dendritic cells is blocked by anti–DC-SIGN antibodies and not by antibodies to other molecules on these cells. Viruses produced by dendritic cells are infectious for DC-SIGN– and L-SIGN–bearing THP-1 cells and other permissive cell lines. Therefore, DC-SIGN may be considered as a new target for designing therapies that block dengue infection.
DC-SIGN (CD209) Mediates Dengue Virus Infection of Human Dendritic Cells
R.M. Steinman, S. Schlesinger, and M.A. Marovich all contributed equally to this work.
Abbreviations used in this paper: DC, dendritic cell; DC-SIGN, DC-specific ICAM-3 grabbing nonintegrin; DV, dengue virus; HIV-1, HIV-type 1; ICAM, intracellular adhesion molecule; L-SIGN, liver/lymph node–specific ICAM-3–grabbing nonintegrin; MCM, monocyte-conditioned media; MFI, mean fluorescence intensity; MOI, multiplicity of infection; NS1, nonstructural protein 1; THP DC-SIGN, DC-SIGN–transfected THP.
Boonrat Tassaneetrithep, Timothy H. Burgess, Angela Granelli-Piperno, Christine Trumpfheller, Jennifer Finke, Wellington Sun, Michael A. Eller, Kovit Pattanapanyasat, Suttipant Sarasombath, Deborah L. Birx, Ralph M. Steinman, Sarah Schlesinger, Mary A. Marovich; DC-SIGN (CD209) Mediates Dengue Virus Infection of Human Dendritic Cells . J Exp Med 7 April 2003; 197 (7): 823–829. doi: https://doi.org/10.1084/jem.20021840
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