Department of Burns and Plastic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 280 Mohe Road, Baoshan District, Shanghai, 201900, China.
Institute of Traumatic Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai, 201999, China.
Inflammation. 2017 Aug;40(4):1416-1427. doi: 10.1007/s10753-017-0585-6.
Wound healing involves three stages including inflammation, proliferation, and tissue remodeling. The underlying mechanisms remain to be further elucidated. The inflammation is characterized by spatially and temporally changing patterns of various leukocyte subsets. It is regarded as the most crucial stage since the inflammatory response is instrumental to supplying various factors and cytokines that orchestrate healing events. As a subtype of T lymphocytes, γδ T cells play an important role in skin homeostasis, tumor immunosurveillance, and wound repair. However, either the dynamics of γδ T cells in healing process or the anticipated association of γδ T cells with chronic or refractory wounds were not well understood. In this study, we determine the dynamics of γδ T cells and γδ T cell-produced effectors during acute and chronic wound repair by establishing a third-degree burn model in mice skin or human skin from diabetic patients. Our data show that the involvement of γδ T cells in acute and chronic skin wound healing. The protein levels and mRNA expressions of γδ T cell-produced effectors were increased in acute healing model, whereas those effectors were decreased in chronic repair, suggesting γδ T cells are essential for wound repair. This study probes into the significant relevance of γδ T cells with effective wound repair and provides new enlightenments for the mechanisms of the formation of chronic and/or refractory wounds.
伤口愈合涉及三个阶段,包括炎症、增殖和组织重塑。其潜在机制仍有待进一步阐明。炎症的特征是各种白细胞亚群在空间和时间上发生变化。它被认为是最关键的阶段,因为炎症反应对于提供各种协调愈合事件的因子和细胞因子至关重要。γδ T 细胞作为 T 淋巴细胞的一个亚型,在皮肤稳态、肿瘤免疫监视和伤口修复中发挥着重要作用。然而,γδ T 细胞在愈合过程中的动态变化,或者 γδ T 细胞与慢性或难治性伤口的预期关联,尚不清楚。在这项研究中,我们通过建立小鼠皮肤或糖尿病患者的人皮肤三度烧伤模型,确定了 γδ T 细胞及其产生的效应物在急性和慢性伤口修复过程中的动态变化。我们的数据表明,γδ T 细胞参与了急性和慢性皮肤伤口愈合。在急性愈合模型中,γδ T 细胞产生的效应物的蛋白水平和 mRNA 表达增加,而在慢性修复中则减少,这表明 γδ T 细胞对伤口修复至关重要。这项研究探讨了 γδ T 细胞与有效伤口修复的显著相关性,并为慢性和/或难治性伤口形成的机制提供了新的启示。
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