Engineering integrated digital circuits with allosteric ribozymes for scaling up molecular computation and...

Area of Science:

• Molecular Biology
• Synthetic Biology
• Biochemistry

Background:

• Allosteric ribozymes offer programmable molecular recognition and catalytic functions.
• Integrated digital circuits are fundamental to computation.
• RNA-based logic gates are emerging for molecular computing.

Purpose of the Study:

• To design and implement molecular integrated digital circuits using allosteric ribozymes.
• To demonstrate the logic gate functionality and circuit integration of these ribozymes.
• To explore the potential of these ribozymes in molecular computing and diagnostics.

Main Methods:

• Utilized a computerized procedure to design allosteric ribozymes for specific RNA targets.
• Engineered ribozymes to perform logic functions such as AND, multiplexer, and decoder.
• Demonstrated a multiplexer-decoder circuit and assessed the impact of base substitutions on logic function.
• Investigated the ability of ribozymes to sense RNA length for multiple interactions.

Main Results:

• Successfully implemented three-input AND, two-input multiplexer, and 1-to-2 decoder logic gates using allosteric ribozymes.
• Demonstrated a functional multiplexer-decoder circuit with integrated logic.
• Showcased ribozymes capable of performing up to five logic gates and sensing RNA length.
• Confirmed that single base substitutions can alter ribozyme logic function.
• Showed potential for cleaving RNA with triplet-repeat expansions linked to genetic disorders.

Conclusions:

• Allosteric ribozymes can serve as versatile platforms for molecular integrated circuits.
• The universal design allows for adaptation to various RNA targets and logic functions.
• These designer ribozymes hold promise for advancing molecular computing, diagnostics, and RNA synthetic biology.