Dynamic self-assembly of compartmentalized DNA nanotubes

Area of Science:

• Synthetic biology
• Biomaterials science
• Molecular engineering

Background:

• Synthetic biology seeks to engineer artificial cells with responsive behaviors using minimal molecular components.
• Programmable biomaterials are crucial for achieving active spatial organization within cell-sized compartments.

Purpose of the Study:

• To demonstrate the dynamic self-assembly of nucleic acid (NA) nanotubes inside water-in-oil droplets.
• To develop methods for encapsulating and assembling DNA nanotubes from programmable DNA monomers.
• To achieve temporal control over nanotube assembly and disassembly via designed RNA pathways.

Main Methods:

• Encapsulation of programmable DNA monomers within water-in-oil droplets.
• Dynamic self-assembly of DNA nanotubes.
• Temporal control of assembly/disassembly using RNA production and degradation pathways.
• Statistical analysis of droplet images to examine dynamic responses.

Main Results:

• Successful demonstration of dynamic self-assembly of nucleic acid nanotubes within cell-sized compartments.
• Development of methods for controlled assembly and disassembly of DNA nanotubes.
• Evidence of temporal control over nanotube dynamics through designed RNA pathways.

Conclusions:

• This study provides a toolkit of methods and components for building complex NA materials in synthetic cells.
• The developed programmable biomaterials can mimic life-like functions, advancing the goal of engineering responsive artificial cells.