Rational design of functional amyloid fibrillar assemblies

Area of Science:

• Biomaterials Science
• Synthetic Biology
• Structural Biology

Background:

• Amyloid fibrillar assemblies, initially recognized in neurodegenerative diseases, possess unique properties like hierarchical assembly, mechanical strength, and stability.
• These inherent characteristics make amyloid assemblies attractive for diverse functional material applications.
• Recent advances in synthetic and structural biology enable novel design strategies for functional amyloid materials.

Purpose of the Study:

• To provide a comprehensive overview of design principles for functional amyloid fibrillar assemblies.
• To explore strategies for engineering amyloid assemblies with new functions and dynamic regulation.
• To highlight the role of structural insights and characterization in guiding amyloid material design.

Main Methods:

• Review of fundamental amyloid assembly structures and functions.
• Analysis of two key design strategies: protein modular design/hybridization and synthetic gene circuit regulation.
• Summary of advancements in characterization techniques for atomic-level structural insights.

Main Results:

• Protein modular design enables applications in catalysis, disinfection, mineralization, bio-imaging, and biotherapy.
• Synthetic gene circuits allow dynamic regulation for pattern formation, self-repair, and sensing.
• Atomic-level structural understanding reveals diverse assembly/disassembly mechanisms, aiding structure-guided design.

Conclusions:

• Functional amyloid fibrillar assemblies can be engineered for a wide range of applications.
• Integrating structural tunability, synthetic biology, and AI holds promise for future functional amyloid design.
• Understanding structure-function relationships is crucial for developing advanced amyloid-based biomaterials.