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Multiscale design of cell-free biologically active architectural structures.

G Ho1, V Kubušová2,3, C Irabien2

  • 1Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, United States.

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|April 17, 2023
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Summary

This study combines cell-free protein expression systems with 3D printing for biofabrication in architecture. This creates programmable, living-like materials for healthier indoor environments and innovative product design.

Keywords:
additive manufacturingbiodesignbiofabricationbiointeractive architecturecell-free systemsinteractive biomaterialsmaterial-driven designprogrammable matter

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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.