STWM: Sliding Time Window Method Driven by Enzymes for Image Information Access

Area of Science:

• Biochemistry
• Molecular Biology
• Synthetic Biology

Background:

• Precise temporal regulation is crucial for DNA molecular circuits in biological information processing.
• Incorporating time as a regulatory parameter for information access in molecular circuits remains a significant challenge.

Purpose of the Study:

• To present a programmable sliding time window method (STWM) for temporally regulated molecular circuits.
• To enable multivariable regulation of time windows for molecular signal processing.
• To demonstrate applications in image data encoding and decoding.

Main Methods:

• Utilized exonuclease III (Exo III) to construct a sliding time window mechanism.
• Tuned apurinic/apyrimidinic (AP) site positions and enzyme/strand concentrations for temporal control.
• Designed a DNA molecular circuit with integrated time window functionality.

Main Results:

• Achieved multivariable regulation of time windows for molecular signal processing.
• Successfully demonstrated the complete workflow of image data encoding and decoding.
• Reconstructed a 4x4 image matrix using the developed DNA molecular circuit.

Conclusions:

• The proposed STWM offers a reusable and tunable framework for molecular timing control.
• This strategy opens new avenues for molecular computing, bioinformation processing, and intelligent biosensing.