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Prepublished online as a Blood First Edition Paper on July 17, 2003; DOI 10.1182/blood-2003-02-0384.

Submitted February 6, 2003
Accepted July 3, 2003
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
Baylor Institute for Immunology Research, Dallas, TX, USA
The University of Texas Southwestern Medical Center, Dallas, TX, USA
* Corresponding author; email: karolinp{at}baylorhealth.edu.
Distinct human dendritic cell 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 NOD/SCID mice engrafted with human CD34+ hematopoietic progenitors develop human myeloid and plasmacytoid DCs. Skin display 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 IFN- upon influenza virus exposure. Injection of influenza virus into reconstituted mice triggers IFN- release and maturation of mDCs. Thus, these mice provide a model to study the pathophysiology of human DC subsets.

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