Bioactive decellularized adipose matrix prepared using a rapid, nonchemical/enzymatic method for adipogenesis

Area of Science:

• Regenerative Medicine
• Biomaterials Science
• Stem Cell Biology

Background:

• Adipose tissue-derived mesenchymal stem cell scaffolds are crucial for regenerative surgery.
• Decellularized adipose matrix (DAM) is widely used for stem cell delivery and soft tissue regeneration.
• Traditional chemical methods for DAM preparation pose risks due to long-term detergent use.

Purpose of the Study:

• To develop a rapid, chemical-free mechanical protocol for preparing decellularized adipose matrix (M-DAM).
• To comprehensively compare M-DAM with conventionally prepared DAM (chemical method).
• To evaluate the potential of M-DAM for stem cell proliferation, differentiation, and in vivo applications.

Main Methods:

• A novel, rapid mechanical protocol was employed to process adipose tissue into M-DAM, avoiding chemicals and enzymes.
• M-DAM was characterized and compared to traditionally prepared DAM.
• Assays were conducted to assess collagen content, protein composition, basement membrane elements, and non-cytotoxicity.

Main Results:

• The mechanical method effectively removed oils and cells while preserving structural and biological components.
• M-DAM exhibited superior collagen content, increased protein numbers, and higher levels of basement membrane elements and glycoproteins.
• M-DAM demonstrated enhanced adipogenesis and angiogenesis proteins, confirmed non-cytotoxicity, and supported stem cell proliferation and differentiation.

Conclusions:

• The rapid mechanical protocol offers a safe and effective alternative for producing bioactive decellularized adipose matrix (M-DAM).
• M-DAM provides a natural niche for stem cell applications, promoting vascularization and adipogenesis.
• This technique allows for versatile M-DAM fabrication (tablets, powders, hydrogels, 3D prints) for broad regenerative medicine use.