Compressive Buckling Fabrication of 3D Cell-Laden Microstructures

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Regenerative Medicine

Background:

• Recreating three-dimensional (3D) tissue architecture is crucial for biological function and a major challenge in tissue engineering.
• Current two-dimensional (2D) fabrication methods offer limited out-of-plane structural representation.

Purpose of the Study:

• To develop a novel method for fabricating 3D biomimetic cell-laden microstructures from 2D patterns.
• To enable precise out-of-plane delivery of cells and extracellular matrix for advanced tissue models.

Main Methods:

• Harnessing the compressive buckling principle to transform microfabricated 2D planar patterns into 3D structures.
• Demonstrating fabrication of diverse polymeric 3D microstructures (box, octopus, pyramid, waves).
• Creating a mineralized bone tissue model with patterned cell-laden lacunae.

Main Results:

• Successful fabrication of various complex 3D microstructures with high spatial precision.
• Demonstrated capability for creating biomimetic tissue models, including a mineralized bone model.
• Validated the potential for precise, out-of-plane patterning of cells and extracellular matrix.

Conclusions:

• The compressive buckling method effectively translates 2D fabrication techniques into 3D tissue constructs.
• This approach bridges the gap between 2D and 3D fabrication, expanding possibilities in tissue engineering.
• The technique holds significant promise for advancing regenerative medicine and disease modeling through biomimetic 3D structures.