Guiding Cell Attachment in 3D Microscaffolds Selectively Functionalized with Two Distinct Adhesion Proteins

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Cell Biology

Background:

• Direct laser writing (DLW) enables the fabrication of complex 3D microstructures.
• Functionalizing biomaterials with proteins is crucial for controlling cell behavior.
• Developing cell-instructive materials for tissue regeneration remains a significant challenge.

Purpose of the Study:

• To develop a novel 3D microscaffold capable of presenting multiple bioactive proteins.
• To investigate the cell-guiding properties of the developed microscaffold for epithelial and fibroblast cells.
• To leverage direct laser writing for precise fabrication of functionalized biomaterials.

Main Methods:

• Fabrication of a 3D microscaffold by combining three distinct photoresists using direct laser writing.
• Functionalization of the microscaffold with two different bioactive, full-length proteins.
• Assessment of cell attachment and guidance of epithelial and fibroblast cells on the 3D structures.

Main Results:

• Successful fabrication of a multi-component 3D microscaffold with controlled protein immobilization.
• Demonstration of distinct protein-binding properties on different regions of the microscaffold.
• Directed and specific attachment of epithelial and fibroblast cells to the functionalized 3D microscaffold.

Conclusions:

• The developed 3D microscaffold serves as a cell-instructive material for guided cell adhesion.
• This technology allows for precise spatial control over cell attachment in a 3D environment.
• The combination of DLW and protein functionalization offers a versatile platform for advanced tissue engineering strategies.