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Published online before print November 17, 2004
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Department of Microbiology and Immunology, Indiana University School of Medicine, The Walther Oncology Center, and The Walther Cancer Institute, Indianapolis
1 Correspondence: Department of Microbiology and Immunology, Indiana University School of Medicine, Building R2, Room 302, 950 W. Walnut St., Indianapolis, IN 46202-5181. E-mail: rbrutkie{at}iupui.edu
Mice were infected with lymphocytic choriomeningitis virus (LCMV) to determine if changes in CD1d expression occurred during an acute virus infection. It is interesting that a decrease in CD1d expression on splenic dendritic cells (DC) and macrophages (M
) was observed for at least 3 months post-LCMV infection, and vaccinia virus and vesicular stomatitis virus induced similar changes in CD1d upon infection with those viruses. The reduction of CD1d cell-surface expression on DC and M
was independent of interferon-
and interleukin-12 expression but partially recovered in transporter associated with antigen processing-1-deficient mice, suggesting that CD8+ T cells may play a role. Thus, one consequence of the induction of a cellular immune response is a change in CD1d expression, which may constitute a key element in regulating antiviral immunity.
Key Words: innate immunity spleen peripheral organs antigen presenting cells
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