Bioprinting of 3D Tissue Models Using Decellularized Extracellular Matrix Bioink

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Regenerative Medicine

Background:

• Bioprinting enables the creation of three-dimensional (3D) tissue analogues by patterning cells and extracellular matrix (ECM) materials.
• Current bioinks often fail to replicate the natural ECM complexity, hindering cellular morphology and function reconstitution.
• Developing advanced bioinks is crucial for fabricating functional tissue constructs.

Purpose of the Study:

• To present a novel method for creating bioinks from decellularized extracellular matrices (dECMs).
• To establish a protocol for bioprinting cell-laden constructs using dECM bioink.
• To evaluate the potential of dECM bioink in supporting 3D tissue formation with high cell viability and functionality.

Main Methods:

• Decellularization of native tissues (adipose, cartilage, heart) to obtain ECM components.
• Processing of dECMs into a printable bioink formulation.
• Bioprinting of cell-laden constructs using the developed dECM bioink.
• Assessment of cell viability, morphology, and functionality within the 3D bioprinted constructs.

Main Results:

• Successful preparation of bioinks from various dECM sources.
• Demonstrated ability of dECM bioink to provide an optimized microenvironment for cell growth.
• Achieved high cell viability and functionality in the bioprinted tissue structures.
• Fabricated 3D structured tissues with improved cellular integration and function.

Conclusions:

• Decellularized ECMs represent a promising source for developing advanced bioinks.
• The novel dECM bioink facilitates the bioprinting of functional 3D tissue constructs.
• This approach holds potential for applications in tissue engineering and regenerative medicine.