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Blood, 1 November 2003, Vol. 102, No. 9, pp. 3302-3310.
Prepublished online as a Blood First Edition Paper on July 17, 2003; DOI 10.1182/blood-2003-02-0384.
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IMMUNOBIOLOGY
Human dendritic cell subsets in NOD/SCID mice engrafted with CD34+ hematopoietic progenitors
A. Karolina Palucka,
Joel Gatlin,
Jean Philippe Blanck,
Michael W. Melkus,
Sandra Clayton,
Hideki Ueno,
Elizabeth T. Kraus,
Petra Cravens,
Lynda Bennett,
Angela Padgett-Thomas,
Florentina Marches,
Miguel Islas-Ohlmayer,
J. Victor Garcia, and
Jacques Banchereau
From the Baylor Institute for Immunology Research and University of Texas Southwestern Medical Center, Dallas.
Distinct human dendritic cell (DC) subsets differentially control immunity. Thus, insights into their in vivo functions are important to understand the launching and modulation of immune responses. We show that nonobese diabetic/LtSz-scid/scid (NOD/SCID) mice engrafted with human CD34+ hematopoietic progenitors develop human myeloid and plasmacytoid DCs. The skin displays immature DCs expressing Langerin, while other tissues display interstitial DCs. Myeloid DCs from these mice induce proliferation of allogeneic CD4 T cells in vitro, and bone marrow human cells containing plasmacytoid DCs release interferon- (IFN- ) upon influenza virus exposure. Injection of influenza virus into reconstituted mice triggers IFN- release and maturation of mDCs. Thus, these mice may provide a model to study the pathophysiology of human DC subsets.

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