Recombinant and genetic code expanded collagen-like protein as a tailorable biomaterial

Area of Science:

• Biomaterials Science
• Protein Engineering
• Synthetic Biology

Background:

• Collagen's triple helix structure makes it a preferred biomaterial, but animal-derived sources raise purity and disease transmission concerns.
• Recombinant collagen production faces challenges with high molecular weight and essential post-translational modifications like proline hydroxylation.

Purpose of the Study:

• To review current collagen sources and biomaterials.
• To highlight limitations of animal and existing recombinant collagen.
• To emphasize the potential of genetically modified collagen-like proteins (CLPs) as a superior alternative.

Main Methods:

• Review of existing literature on collagen sources, recombinant production, and CLPs.
• Analysis of challenges in recombinant collagen synthesis, including PTMs.
• Exploration of synthetic biology and genetic code expansion strategies for CLPs.

Main Results:

• Animal collagen has inherent limitations regarding safety and reproducibility.
• Recombinant collagen production is complex, requiring specific modifications for functionality.
• Collagen-like proteins (CLPs) from single-cell organisms show promise for stable triple helix formation.
• Genetic code expansion in CLPs allows for tunable properties and advanced biomaterial development.

Conclusions:

• Genetically engineered CLPs represent a sustainable and tailorable source for functional collagen.
• CLPs offer advantages for creating custom-designed protein biomaterials.
• Further research into CLPs can lead to next-generation smart biomaterials.