期刊
JOURNAL OF IMMUNOLOGY
卷 176, 期 10, 页码 5730-5734出版社
AMER ASSOC IMMUNOLOGISTS
DOI: 10.4049/jimmunol.176.10.5730
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- Wellcome Trust Funding Source: Medline
Recent data from murine models have confirmed that Langerhans cells are not the only population of APCs in the skin involved in 'initiating immune responses. In healthy human skin, we identify CD1a(+) dermalAPCs located close to the lymphatic vessels in the upper layers of the dermis that are unequivocally distinct from migrating Langerhans cells but exhibit both potent allostimulatory capacity and a chemotactic response to CCR17 ligands. In contrast, CD14(+) dermal APCs are distributed throughout the dermis and lack a chemotactic response to CCR7 ligands. CD1a(+) dermalAPCs therefore represent an APC population distinct from Langerhans cells that are capable of migrating to lymph nodes and stimulating naive T cells. In humans, CD1a(+) dermal APCs may fulfill some of the roles previously a-scribed to Langerhans cells.
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