Biocompatible Human Placental Extracellular Matrix Derived Hydrogels

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Regenerative Medicine

Background:

• Extracellular matrix (ECM) hydrogels offer versatile applications in vitro and in vivo.
• Human placental tissue is a potential source for developing novel biomaterials.
• Decellularization techniques are crucial for creating acellular ECM scaffolds.

Purpose of the Study:

• To prepare and characterize placental extracellular matrix (P-ECM) hydrogels from human placental tissue.
• To evaluate the physical and biological properties of P-ECM hydrogels for soft tissue reconstruction.
• To assess the impact of gamma irradiation and HCl treatment on P-ECM hydrogel stability and biocompatibility.

Main Methods:

• Human placental tissue was decellularized using a perfusion-based approach with detergents and enzymes.
• Acellular placental tissue powder (P-ECM) was homogenized and used to prepare hydrogels.
• P-ECM hydrogels were evaluated for mechanical properties, cell proliferation, and viability.
• The effect of gamma irradiation and HCl treatment on hydrogel formation and sterility was investigated.

Main Results:

• Decellularization significantly reduced cellular content while preserving major ECM proteins.
• Increasing P-ECM concentration enhanced hydrogel mechanical properties.
• P-ECM hydrogels demonstrated good biocompatibility, supporting cell proliferation and viability.
• Gamma irradiation prevented stable hydrogel formation, whereas HCl treatment reduced bacterial bioburden.

Conclusions:

• P-ECM hydrogels possess favorable physical and biological characteristics for soft tissue reconstruction.
• These hydrogels create a conducive microenvironment for cellular growth.
• Innovative sterilization methods are required for P-ECM hydrogel applications.