Adipose Tissue and Extracellular Matrix Development by Injectable Decellularized Adipose Matrix Loaded with Basic...

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Regenerative Medicine

Background:

• Reconstructive surgery requires effective soft-tissue replacements.
• Injectable biomaterials are crucial for advanced tissue regeneration.
• Adipose tissue engineering offers a promising solution for soft-tissue defects.

Purpose of the Study:

• To evaluate the efficacy of heparinized decellularized adipose tissue matrix loaded with basic fibroblast growth factor (bFGF) for in vivo adipose tissue regeneration.
• To assess the adipogenic and angiogenic potential of this injectable system.
• To determine the long-term volume stability of the regenerated adipose tissue.

Main Methods:

• Decellularized adipose tissue was harvested from mice, heparinized, and loaded with bFGF.
• An injectable system was created using the modified decellularized adipose tissue.
• In vivo studies evaluated adipose neotissue formation, neovascularization, and volume stability over 12 weeks.

Main Results:

• The bFGF-loaded matrix significantly induced de novo adipose neotissue formation and progressive vascularization.
• Regenerated adipose tissue exhibited mature morphology and extracellular matrix similar to endogenous tissue.
• Control matrix without bFGF showed limited regeneration and was fully resorbed by 12 weeks.

Conclusions:

• Heparinized decellularized adipose tissue matrix with bFGF is highly effective for adipose neotissue formation.
• The system promotes significant neovascularization and provides long-term volume stability.
• This injectable biomaterial shows great potential for soft-tissue reconstruction.