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IL-17A is increased in diabetic wounds and impairs keratinocyte function via histone demethylase JMJD3

Jadie Y. Moon, Sonya J. Wolf*, Amrita D. Joshi, He Zhang, James Shadiow, Tyler M. Bauer, Kevin D. Mangum, Lindsey D. Hughes, Christopher O. Audu, William J. Melvin, Emily C. Barrett, Sabrina Rocco, Gabriela Saldana de Jimenez, Amber L. Estor, Moses Nelapudi, Qinmengge Li, Rachael Bogle, Benjamin Levi, Frank M. Davis, Andrea T. ObiBethany B. Moore, Lam C. Tsoi, Johann E. Gudjonsson, Katherine A. Gallagher*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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 languageEnglish
Article number780
Pages (from-to)780
JournalNature Communications
Volume17
Issue number1
DOIs
StatePublished - 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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