Multiscale design of cell-free biologically active architectural structures

Area of Science:

• Biofabrication
• Biomaterials Engineering
• Architectural Science

Background:

• Cell-free protein expression systems (TXTL) offer a method for producing proteins without living cells.
• 3D printing enables large-scale additive manufacturing of complex structures.
• Integrating biological functions into architectural materials is an emerging field.

Purpose of the Study:

• To explore the integration of cell-free protein expression systems into 3D-printed structures.
• To investigate the potential of biofabrication in architecture and design for creating responsive systems.
• To develop a multiscale platform for biologically active architectural components.

Main Methods:

• Cell-free protein expression systems were embedded within silk fibroin and sodium alginate biopolymer matrices.
• Green fluorescent protein was used as a reporter to confirm compatibility and expression.
• Freeze-dried bioactive pellets were mechanically attached to foldable fibrous biopolymer lattices.

Main Results:

• Successful integration of cell-free protein expression systems within biopolymer matrices was demonstrated.
• Compatibility of TXTL systems with silk fibroin and sodium alginate was confirmed using GFP reporter.
• The study showed the potential for modular, multiscale fabrication of structures with biologically active zones.

Conclusions:

• Cell-free protein expression integrated with 3D printing offers a novel approach for biofabrication in architecture and design.
• This technology can lead to programmable, living-like materials for healthier, resource-optimized built environments.
• Further research is needed to address challenges in expression levels and optimize the multiscale platform for practical applications.