2020年6月5日
Distinct roles for Dectin-1 and Dectin-2 in skin wound healing and neutrophilic inflammatory responses.
The Journal of investigative dermatology
- 巻
- 141
- 号
- 1
- 開始ページ
- 164
- 終了ページ
- 176
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.jid.2020.04.030
C-type lectin receptors (CLRs) recognize microbial polysaccharides. The CLRs Dectin-1 and Dectin-2, which are triggered by β-glucan and α-mannan, respectively, contribute to up-regulation of the inflammatory response. Recently, we demonstrated that activation of the Dectin-2 signal delayed wound healing; in previous studies, triggering the Dectin-1 signal promoted this response. However, the precise roles of these CLRs in skin wound healing remain unclear. This study was conducted to determine the roles of Dectin-1 and Dectin-2 in skin wound healing, with a particular focus on the kinetics of neutrophilic inflammatory response. Full-thickness wounds were created on the backs of C57BL/6 mice, and the effects of Dectin-1 or Dectin-2 deficiency and those of β-glucan or α-mannan administration were examined. We also analyzed wound closure, histological findings, and neutrophilic inflammatory response including neutrophil extracellular trap (NET) formation at the wound sites. We found that Dectin-1 contributed to the acceleration of wound healing by inducing early-phase neutrophil accumulation, whereas Dectin-2 was involved in prolonged neutrophilic responses and NET formation, leading to delayed wound healing. Dectin-2 deficiency also improved collagen deposition and TGF-β1 expression. These results suggest that Dectin-1 and Dectin-2 have different roles in wound healing through their different effects on the neutrophilic response.
- リンク情報
- ID情報
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- DOI : 10.1016/j.jid.2020.04.030
- PubMed ID : 32511980