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Masterful macrophages: understanding and targeting activation dysfunction in diabetic wounds
Linian Peng1,2, Gaoxing Luo1,2, Weifeng He1,2
1State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), No. 29 Gaotanyan Street, Shapingba District, Chongqing 400038, China.
Burns & Trauma
|December 1, 2025
Summary
In diabetes, macrophages promote inflammation and hinder wound healing. Modulating macrophage behavior offers a promising strategy to improve healing in diabetic patients.
Area of Science:
- Immunology
- Metabolic Diseases
- Wound Healing Research
Background:
- Diabetes mellitus presents a significant global health challenge, increasing socioeconomic burdens.
- Impaired wound healing in diabetes is driven by inflammation, ischemia-reperfusion injury, neuropathy, and infection.
- Macrophages play a crucial role in tissue repair but exhibit pro-inflammatory activation in diabetic conditions, disrupting healing processes.
Purpose of the Study:
- To explore the role of macrophages in diabetic wound healing.
- To understand the phenotypic imbalance and microenvironmental disruptions affecting macrophage function in diabetic wounds.
- To identify potential immunomodulatory targets for enhancing diabetic wound repair.
Main Methods:
- Review of macrophage biology, polarization dynamics, and their function in diabetic wound microenvironments.
- Analysis of hyperglycemia-mediated factors like advanced glycation end products and reactive oxygen species impacting macrophage differentiation.
- Discussion of immunomodulation strategies to redirect macrophage phenotypes towards regeneration.
Main Results:
- Macrophages exhibit sustained pro-inflammatory activation in diabetic wounds, impairing essential healing functions.
- Hyperglycemia and associated factors reduce alternative macrophage differentiation, exacerbating pathological conditions.
- Microenvironmental disruptions in diabetic wounds perpetuate dysfunctional macrophage behavior.
Conclusions:
- Macrophages are critical coordinators of diabetic wound healing but their function is pathologically altered.
- Targeting specific regulatory nodes controlling macrophage activation states presents opportunities for therapeutic intervention.
- Immunomodulation strategies hold promise for resolving inflammation and stimulating regeneration in diabetic wounds.
