Cytoskeleton-functionalized synthetic cells with life-like mechanical features and regulated membrane dynamicity

Area of Science:

• Biomaterials Science
• Cellular Engineering
• Synthetic Biology

Background:

• The cytoskeleton is essential for cell structure, mechanical resilience, and cellular processes like division and motility.
• Reconstituted or artificial cytoskeletons are of significant interest for understanding cellular mechanics and developing artificial cells.

Purpose of the Study:

• To construct an artificial cytoskeleton that provides mechanical support and regulates membrane dynamics.
• To develop a novel biomimetic system mimicking the functions of a natural cytoskeleton.

Main Methods:

• Utilized amylose-based coacervates stabilized by a terpolymer membrane.
• Formed an artificial cytoskeleton from polydiacetylene fibrils that bundle into micrometre-sized structures.
• Leveraged interactions between positively charged amylose derivatives and polydiacetylene fibrils for bundling.

Main Results:

• Successfully constructed an artificial cytoskeleton with mechanical support properties.
• Demonstrated regulation of membrane dynamics by the artificial cytoskeleton system.
• Created micrometre-sized bundled structures mimicking natural cytoskeletal organization.

Conclusions:

• The developed artificial cytoskeleton represents a significant advancement in biomimetic systems.
• This system paves the way for creating artificial cell platforms with enhanced life-like behaviors.
• Highlights the intricate interplay between structure and function in cellular engineering.