Prophylactic Decellularized Adipose Matrix Treatment Mitigates Development of Radiation-Induced Cutaneous Fibrosis

Area of Science:

• Biomedical Engineering
• Regenerative Medicine
• Dermatology

Background:

• Radiation therapy commonly causes radiation-induced fibrosis (RIF), leading to skin damage like poor wound healing.
• Decellularized adipose matrix (DAM) is being explored for volumetric correction and skin regeneration in RIF patients.

Purpose of the Study:

• To investigate the therapeutic potential of prophylactic decellularized adipose matrix (DAM) injection in preventing radiation-induced fibrosis (RIF) in skin.
• To evaluate the effects of DAM on skin architecture, perfusion, and biomechanical properties following irradiation.

Main Methods:

• Decellularized adipose matrix (DAM) was subdermally injected into mouse flanks before irradiation.
• Magnetic resonance imaging (MRI) monitored DAM volume retention, and laser Doppler assessed skin perfusion.
• Histological and biomechanical analyses evaluated skin structure and function post-irradiation.

Main Results:

• Prophylactic DAM injection improved histological measures of skin architecture, including dermal thickness and collagen organization, compared to untreated irradiated skin.
• DAM treatment enhanced skin perfusion and reduced skin stiffness, restoring biomechanical properties closer to normal.
• Magnetic resonance imaging showed gradual decrease in DAM volume over time, but significant retention was observed.

Conclusions:

• Prophylactic decellularized adipose matrix (DAM) treatment demonstrates significant therapeutic potential in preventing radiation-induced fibrosis (RIF) of the skin.
• Injected DAM is largely retained post-irradiation, preserving histological and biomechanical characteristics of normal, non-irradiated skin.