Chronic, non-healing wounds remain a major clinical and economic burden despite advances in dressings, growth factors, and skin substitutes. These wounds are typically characterized by persistent inflammation, impaired angiogenesis, and defective extracellular matrix (ECM) remodeling.
Mesenchymal stem cells (MSCs) are emerging as a promising adjunct therapy because they target multiple pathological mechanisms simultaneously through immunomodulation and paracrine signaling rather than simply replacing lost cells.
Across preclinical models and human studies, MSC treatment has been shown to:
AD-MSCs are particularly attractive due to their abundance, ease of harvest, strong ex vivo expansion, and secretion of pro-angiogenic factors. They have been successfully applied in:
Clinical outcomes include faster healing, reduced pain, and improved cosmetic results when combined with optimal local wound care.
MSCs derived from bone marrow, placenta, and umbilical cord have also demonstrated meaningful improvements in closure rates and quality of healing in lower extremity ulcers, pressure sores, and radiation burns, with an acceptable short-term safety profile and few serious adverse events.
“Good practice” principles emphasize that MSC therapy should always complement meticulous standard care, including:
Local delivery—via perilesional injections or topical application in fibrin sprays, hydrogels, or dermal substitutes—is more effective than systemic administration, improving cell engraftment and retention. Combining AD-MSCs with platelet-rich plasma, fat grafts, or biomaterial scaffolds further enhances tissue volume restoration, vascularity, and closure durability without major side effects.
MSCs act primarily through paracrine signaling:
MSC-derived secretome or EVs retain many regenerative and immunomodulatory benefits while reducing risks such as tumorigenicity, embolism, and long-term engraftment.
Preclinical studies show that small EVs:
Subcutaneous delivery and adipose-derived sources appear especially effective.
Despite promising results, clinical evidence is limited by:
Key elements of responsible practice include:
Emerging strategies such as gene modification, hypoxic preconditioning, and advanced biomaterial scaffolds aim to improve MSC survival, homing, and potency, with early data suggesting enhanced tissue regeneration and reduced scarring.
MSC-based therapies—particularly AD-MSCs and their extracellular vesicles—represent a safe and promising adjunct for chronic wound management. They can accelerate wound closure, improve neovascularization, reduce pain, and potentially limit scarring when integrated with best-practice wound care and optimized local administration strategies. Large, well-designed randomized controlled trials and standardized protocols are still essential before MSC therapy can become a routine, evidence-based treatment.
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