Human extracellular matrix (ECM)-like collagen and its bioactivity

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Extracellular Matrix Biology

Background:

• Collagen is crucial for tissue support and development but sourcing challenges exist.
• Animal-derived collagen presents immunogenicity risks.
• Recombinant collagen often exhibits reduced bioactivity.

Purpose of the Study:

• To develop and evaluate human ECM-like collagen (hCol) as a viable alternative for tissue engineering.
• To assess the bioactivity and structural resemblance of hCol to native collagen.
• To investigate hCol's efficacy in promoting stem cell functions and wound healing.

Main Methods:

• Generated hCol from mesenchymal stem cells using a facile platform.
• Characterized hCol's hierarchical structure and biochemical properties.
• Assessed hCol's impact on human adipose-derived stem cell viability, proliferation, migration, and differentiation.
• Evaluated hCol's efficacy in promoting cutaneous wound closure in vivo.

Main Results:

• hCol was successfully generated with structural and biochemical properties similar to native collagen.
• hCol supported essential biological behaviors of human adipose-derived stem cells.
• hCol demonstrated promotion of cutaneous wound closure.
• The generated hCol exhibited good bioactivity.

Conclusions:

• Human ECM-like collagen (hCol) is a promising biomaterial for tissue engineering.
• hCol offers an alternative to animal-derived and recombinant collagen sources.
• hCol shows potential for both in vitro and in vivo applications due to its bioactivity and similarity to native collagen.