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:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Jameson JM
Jameson JM
中科院分区:
其他
文献类型:
--
作者:
Havran WL;Jameson JM

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小鼠表皮含有表达典型 γδ TCR 的常驻 T 细胞。这些细胞源自胎儿胸腺前体,并使用仅限于成年动物皮肤的 TCR。这些细胞在正常皮肤中呈现树突状形态,并持续产生低水平的细胞因子,有助于表皮稳态。当皮肤受伤时,受损的角质形成细胞上会表达未知抗原。然后邻近的 γδ T 细胞聚集起来,通过局部产生上皮生长因子和炎症细胞因子来促进伤口愈合。如果皮肤缺乏 γδ T 细胞,伤口愈合就会受到损害。同样,伤口愈合患者的表皮 T 细胞被激活并分泌生长因子。伤口不愈合的患者表皮 T 细胞反应有缺陷。关于小鼠表皮驻留 T 细胞的作用的信息可能为开发伤口愈合的新治疗方法提供信息。
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.
证据表明CD8+树突状细胞能够开发调节气道高反应性的γT细胞。
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