Instruction-responsive programmable assemblies with DNA origami block pieces

Area of Science:

• DNA nanotechnology
• Nanofabrication
• Molecular computing

Background:

• DNA nanotechnology offers platforms for nanofabrication and DNA computing.
• Current limitations exist in constructing programmable finite arrays for easy pre-functionalization.

Purpose of the Study:

• To develop standardized and controllable DNA origami components for assembling diverse superstructures.
• To enable finite-scale assembly driven by instruction sets.

Main Methods:

• Design and implementation of DNA origami building block pieces (DOBPs) with eight independent programmable edges.
• Formulation of DNA instructions for tailored component assembly.
• Experimental validation of assembly strategies and connection methods.

Main Results:

• DOBPs can be assembled into specific 2D arrays based on instruction sets, with a two-unit system theoretically generating 48 distinct arrays.
• Demonstrated both deterministic and nondeterministic assembly capabilities of DOBPs.
• Successfully assembled complex 2D arrays ('square frames', 'windmills', 'long strips') and implemented Boolean logic gates ('AND', 'XOR').

Conclusions:

• The DOBP system provides a model nanostructure for controllable finite self-assembly research.
• Offers an integrated approach for molecular information storage and processing.
• Advances the field of programmable DNA-based nanostructures.