Cited by 116Wound Healing and TreatmentsInflammasome and immune disordersMuscle Physiology and Disorders

Gasdermin D-mediated metabolic crosstalk promotes tissue repair

Chi, Zhexu, Chen, Sheng, Yang, Dehang, Cui, Wenyu, Lu, Yang, Wang, Zhen, Li, Mobai, Yu, Weiwei +16 more·2024·Nature

Abstract

The establishment of an early pro-regenerative niche is crucial for tissue regeneration 1,2. Gasdermin D (GSDMD)-dependent pyroptosis accounts for the release of inflammatory cytokines upon various insults 3-5. However, little is known about its role in tissue regeneration followed by homeostatic maintenance. Here we show that macrophage GSDMD deficiency delays tissue recovery but has little effect on the local inflammatory milieu or the lytic pyroptosis process. Profiling of the metabolite secretome of hyperactivated macrophages revealed a non-canonical metabolite-secreting function of GSDMD. We further identified 11,12-epoxyeicosatrienoic acid (11,12-EET) as a bioactive, pro-healing oxylipin that is secreted from hyperactive macrophages in a GSDMD-dependent manner. Accumulation of 11,12-EET by direct supplementation or deletion of Ephx2, which encodes a 11,12-EET-hydrolytic enzyme, accelerated muscle regeneration. We further demonstrated that EPHX2 accumulated within aged muscle, and that consecutive 11,12-EET treatment rejuvenated aged muscle. Mechanistically, 11,12-EET amplifies fibroblast growth factor signalling by modulating liquid-liquid phase separation of fibroblast growth factors, thereby boosting the activation and proliferation of muscle stem cells. These data depict a GSDMD-guided metabolite crosstalk between macrophages and muscle stem cells that governs the repair process, which offers insights with therapeutic implications for the regeneration of injured or aged tissues.

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Crossref · 10.1038/s41586-024-08022-7

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Authors
Chi, Z., Chen, S., Yang, D., Cui, W., Lu, Y., Wang, Z., Li, M., Yu, W., Zhang, J., Jiang, Y., Sun, R., Yu, Q., Hu, T., Lu, X., Deng, Q., Yang, Y., Zhao, T., Chang, M., Li, Y., Zhang, X., Shang, M., Xiao, Q., Ding, K., & Wang, D.
Affiliations
  • Sir Run Run Shaw Hospital (CN)
  • Second Affiliated Hospital of Zhejiang University (CN)
  • Zhejiang University (CN)
  • Chinese Academy of Sciences (CN)
Corresponding author
  • Chi, Zhexu
  • Wang, Di
Venue
Nature
Published
2024-09-11
Volume
634
Issue
8036
Pages
1168-1177
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W4402438036
Cited by
116
References
57
Citations by year
2026: 54 · 2025: 57 · 2024: 5
FWCI
18.43
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Topics
  • Health Sciences › Medicine › Rehabilitation › Wound Healing and Treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Inflammasome and immune disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
Keywords
gasdermin D, pyroptosis, macrophages, 11,12-epoxyeicosatrienoic acid, oxylipins, EPHX2, muscle regeneration, muscle aging, FGF signaling, liquid-liquid phase separation, muscle stem cells, tissue repair, metabolite secretion
MeSH terms
Pyroptosis, Gasdermins, Aging, Animals, Epoxide Hydrolases, Female, Homeostasis, Humans, Macrophages, Male, Mice, Inbred C57BL, Regeneration, Rejuvenation, Wound Healing, 8,11,14-Eicosatrienoic Acid, Muscle, Skeletal, Phosphate-Binding Proteins, Intracellular Signaling Peptides and Proteins, Mice, Oxylipins

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