Programmable Aggregation of Artificial Cells with DNA Signals

Area of Science:

• Synthetic biology
• Biophysics
• Cellular communication

Background:

• Cell aggregation is crucial for cell viability, differentiation, and migration.
• Developing synthetic analogs of cell aggregation can advance cell physiology and biophysics.
• Current tools for creating dynamic artificial cell systems with intercellular signaling are limited.

Purpose of the Study:

• To construct synthetic cells capable of programmable aggregation behaviors.
• To utilize DNA oligonucleotides as signaling molecules for intercellular communication in artificial cells.
• To engineer transmembrane channels for signal recognition and transduction in synthetic cells.

Main Methods:

• Synthetic cells were constructed from engineered lipids.
• DNA origami was used to create transmembrane channels for signal processing.
• An intracellular enzyme was employed for signal transduction of external DNA signals.

Main Results:

• Demonstrated programmable aggregation of small vesicles onto a giant vesicle.
• Showcased dissociation of small vesicles upon receiving specific "release" signals.
• Established a system for intercellular communication and coordination in artificial cells.

Conclusions:

• This work presents a novel approach to building synthetic protocells.
• The developed system enables chemical communication and coordinated behavior in artificial cells.
• Offers new possibilities for advancing the fields of cell physiology and biophysics through synthetic systems.