Abstract
IL-17A is a cytokine critical for tissue repair, but in excess, it prolongs inflammation and impairs healing. In type 2 diabetic (T2D) wounds, keratinocyte functions, including migration and inflammation, are disrupted, though mechanisms remain unclear. Here, we demonstrate that IL-17A regulates keratinocyte dysfunction via induction of the histone demethylase Jumonji domain-containing protein 3 (JMJD3) through a TRAF6/NFκB pathway. JMJD3 removes repressive histone 3 lysine 27 (H3K27me3) marks at anti-migratory (Itga3, Timp1) and inflammatory (Ccl20, Cxcl1, Cxcl3, Cxcl5) gene promoters, increasing transcription. Human and murine diabetic wounds exhibit elevated IL-17A signaling, JMJD3, and expression of associated anti-migratory and inflammatory genes compared to controls. Importantly, keratinocyte-specific deletion of IL-17A signaling or JMJD3 in diabetic mice improves wound healing and decreases expression of JMJD3 target genes. These findings reveal an IL-17A/JMJD3-mediated mechanism driving keratinocyte dysfunction in T2D wounds and highlight the therapeutic potential of targeting this axis to enhance wound repair.
| Original language | English |
|---|---|
| Article number | 780 |
| Pages (from-to) | 780 |
| Journal | Nature Communications |
| Volume | 17 |
| Issue number | 1 |
| DOIs | |
| State | Published - 18 Dec 2025 |
Keywords
- Animals
- Cell Movement
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Type 2/metabolism
- Female
- Humans
- Inflammation
- Interleukin-17/metabolism
- Jumonji Domain-Containing Histone Demethylases/metabolism
- Keratinocytes/metabolism
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- NF-kappa B/metabolism
- Signal Transduction
- Wound Healing/genetics
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