Robust Self-Regeneratable Stiff Living Materials Fabricated from Microbial Cells

Area of Science:

• Biomaterials Science
• Synthetic Biology
• Materials Engineering

Background:

• Living organisms fabricate materials like wood and bone under ambient conditions.
• Biological materials often derive stiffness from structural biopolymers or biominerals.
• The potential for cells alone to form stiff structures remains largely unexplored.

Purpose of the Study:

• To investigate if microbial cells alone can serve as the primary building blocks for fabricating stiff materials.
• To develop a novel class of living materials without relying on conventional structural components.

Main Methods:

• Fabrication of stiff living materials (SLMs) entirely from microbial cells.
• Characterization of SLMs for properties such as stiffness, strength, weight, and solvent resistance.
• Assessment of self-regeneration capabilities of the fabricated SLMs.

Main Results:

• Successfully fabricated stiff living materials (SLMs) composed solely of microbial cells.
• SLMs demonstrated remarkable properties including being lightweight, strong, and resistant to organic solvents.
• The fabricated SLMs exhibited self-regeneration capabilities.

Conclusions:

• Living cells can be utilized as the sole component to engineer stiff materials.
• This living materials technology presents a sustainable biomanufacturing platform for advanced structural and cellular materials.
• The developed SLMs offer a novel approach to creating advanced biomaterials with unique properties.