Molecular insights into diabetic wound healing: Focus on Wnt/β-catenin and MAPK/ERK signaling pathways

Area of Science:

• Molecular Biology
• Endocrinology
• Wound Healing Research

Background:

• Diabetic wounds present a major clinical challenge, leading to high rates of lower limb amputations.
• Chronic hyperglycemia in diabetes impairs peripheral nerves, vasculature, and immune function, delaying healing.
• Two key signaling pathways, Wnt/β-catenin and MAPK/ERK, are critical for normal wound repair but are dysregulated in diabetes.

Purpose of the Study:

• To review the relationship between impaired diabetic wound healing and the Wnt/β-catenin and MAPK/ERK signaling pathways.
• To elucidate the molecular mechanisms underlying pathway dysregulation in diabetic wounds.
• To explore potential therapeutic strategies targeting these pathways for improved diabetic wound management.

Main Methods:

• Literature review of normal wound healing processes.
• Analysis of diabetic wound pathophysiology.
• Examination of molecular mechanisms of Wnt/β-catenin and MAPK/ERK pathways in diabetes.

Main Results:

• Wnt/β-catenin pathway activity is altered in diabetic wounds, notably with decreased R-spondin 3 expression.
• MAPK/ERK pathway, crucial for cell proliferation and differentiation, shows dysregulation in diabetic conditions.
• Evidence supports targeting these pathways individually or synergistically for therapeutic benefit.

Conclusions:

• Dysregulation of Wnt/β-catenin and MAPK/ERK pathways significantly contributes to impaired diabetic wound healing.
• Targeting these signaling pathways presents a promising avenue for novel therapeutic interventions.
• Future research should focus on targeted delivery, pathway cross-talk, and dual-pathway modulators for enhanced outcomes.