Epidermal T cells and wound healing.
Epidermal T cells and wound healing.
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DOI:
10.4049/jimmunol.0902733
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发表时间:
2010-05-15
期刊:
影响因子:
--
通讯作者:
Jameson JM
中科院分区:
文献类型:
--
作者:
Havran WL;Jameson JM
The murine epidermis contains resident T cells that express a canonical γδ TCR. These cells arise from fetal thymic precursors and use a TCR that is restricted to the skin in adult animals. These cells assume a dendritic morphology in normal skin and constitutively produce low levels of cytokines that contribute to epidermal homeostasis. When skin is wounded, an unknown antigen is expressed on damaged keratinocytes. Neighboring γδ T cells then round up and contribute to wound healing by local production of epithelial growth factors and inflammatory cytokines. In the absence of skin γδ T cells, wound healing is impaired. Similarly, epidermal T cells from patients with healing wounds are activated and secreting growth factors. Patients with non-healing wounds have a defective epidermal T cell response. Information gained on the role of epidermal-resident T cells in the mouse may provide information for development of new therapeutic approaches to wound healing.
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