Controllable assembly of synthetic constructs with programmable ternary DNA interaction.

Area of Science:

• Biochemistry
• Nanotechnology
• Molecular Biology

Background:

• Ternary interactions, involving three components, often regulate biochemical processes.
• DNA nanotechnology utilizes synthetic DNA nanostructures for various applications.

Purpose of the Study:

• To present a programmable ternary interaction strategy based on DNA triplex structures.
• To demonstrate controllable hierarchical assembly from nanoscale to microscale.
• To develop a selective signaling system using ternary interactions.

Main Methods:

• Utilized natural DNA triplex structures to create programmable ternary interactions.
• Engineered hierarchical assemblies from synthetic DNA nanostructures to live bacteria.
• Designed a signaling system responsive to orthogonal nucleic acid signals.

Main Results:

• Successfully demonstrated controllable hierarchical assemblies using the DNA triplex-based ternary interaction.
• Achieved assembly from nanometer-scale DNA units to micrometer-scale live bacteria.
• Showcased a selective signaling system responsive to specific nucleic acid inputs.

Conclusions:

• The programmable ternary interaction strategy offers a novel approach in DNA nanotechnology.
• This method facilitates the design of complex, hierarchical assemblies.
• The developed system expands the capabilities for selective molecular recognition and assembly.