Controllable and reusable seesaw circuit based on nicking endonucleases

Area of Science:

• Molecular computing and biosensing
• Nanotechnology and bioengineering

Background:

• Seesaw circuits are crucial for molecular computing and biosensing.
• Current limitations include irreversible component depletion, hindering reusability and system recovery.

Purpose of the Study:

• To develop a novel method for creating controllable and reusable seesaw circuits.
• To enhance the performance and practicality of nucleic acid-based circuits.

Main Methods:

• Utilized nicking endonucleases (Nt.BbvCI and Nt.Alwi) to selectively remove functional components while preserving skeletal components.
• Introduced T-inputs to improve signal-to-noise ratios and demonstrate compatibility.
• Constructed complex logic circuits, including an OR-AND gate.

Main Results:

• Achieved controllable and reusable seesaw circuits.
• Significantly increased the signal-to-noise ratio of AND logic from 2.68 to 11.33.
• Demonstrated the logic switching feature without compromising circuit performance.
• Successfully built intricate logic circuits, showcasing versatility.

Conclusions:

• The developed method enables reusable seesaw circuits, overcoming previous limitations of component depletion.
• This approach enhances the practicality and efficiency of molecular computing and biosensing applications.
• The methodology offers significant potential for advancements in nanotechnology and bioengineering.