Reconstructing Soma-Soma Synapse-like Vesicular Exocytosis with DNA Origami

Area of Science:

• Biotechnology
• Nanotechnology
• Cell Biology

Background:

• Cell-cell communication is vital for physiological functions like immune response and neurotransmission.
• Reconstructing functional intercellular junctions, such as soma-soma synapses, for study remains a significant challenge.

Purpose of the Study:

• To develop a novel method for establishing cell conjugation and reconstructing soma-soma synapse-like junctions.
• To demonstrate the functionality of these artificial junctions in facilitating intercellular communication.
• To enable real-time monitoring of cellular events within these junctions.

Main Methods:

• Utilized DNA origami nanostructures to create cell conjugation and artificial synapse-like junctions.
• Verified intercellular communication, including small molecule and membrane vesicle exchange.
• Integrated carbon fiber nanometric electrodes for real-time monitoring of vesicular exocytotic events.

Main Results:

• Successfully reconstructed soma-soma synapse-like junctions using DNA origami.
• Confirmed the maintenance of intercellular communication (small molecule and vesicle exchange) within the artificial junctions.
• Achieved real-time monitoring of individual vesicular exocytotic events and analyzed exocytosis kinetics through current spike analysis.

Conclusions:

• The developed DNA origami-based platform provides a versatile method for creating and studying artificial synapse-like junctions.
• This approach facilitates the investigation of intercellular communication and vesicular exocytosis.
• Offers a new strategy for probing synaptic communications in real-time.