| Literature DB >> 9356487 |
J Olweus1, A BitMansour, R Warnke, P A Thompson, J Carballido, L J Picker, F Lund-Johansen.
Abstract
Dendritic cells (DC) have been thought to represent a family of closely related cells with similar functions and developmental pathways. The best-characterized precursors are the epidermal Langerhans cells, which migrate to lymphoid organs and become activated DC in response to inflammatory stimuli. Here, we demonstrate that a large subset of DC in the T cell-dependent areas of human lymphoid organs are nonactivated cells and belong to a separate lineage that can be identified by high levels of the interleukin 3 receptor alpha chain (IL-3Ralphahi). The CD34+IL-3Ralphahi DC progenitors are of myeloid origin and are distinct from those that give rise to Langerhans cells in vitro. The IL-3Ralphahi DC furthermore appear to migrate to lymphoid organs independently of inflammatory stimuli or foreign antigens. Thus, DC are heterogeneous with regard to function and ontogeny.Entities:
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Year: 1997 PMID: 9356487 PMCID: PMC25034 DOI: 10.1073/pnas.94.23.12551
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205