DNA Computing for Disease Detection
The McGill iGEM team developed DNA computing systems classifying diseases from biomarker patterns. Synthetic biology teams worldwide engineer molecular diagnostic circuits. Clinical researchers evaluate DNA computing diagnostics for point-of-care applications. Bioengineers develop cell-free systems detecting pathogens, cancer markers, and genetic disorders.
DNA Strand Displacement Computing
Nadrian Seeman pioneered DNA nanotechnology in the 1980s. Erik Winfree developed theoretical foundations for DNA strand displacement cascades. Lulu Qian created DNA neural networks using strand displacement. Synthetic biologists engineer DNA circuits for biosensing, diagnostics, and molecular robotics.
DNA-Based Transistors
Erik Winfree demonstrated DNA-based logic gates in the 1990s. Georg Seelig and colleagues engineered sophisticated DNA circuits implementing Boolean logic. Synthetic biologists construct molecular transistors using strand displacement reactions. Researchers develop DNA computing systems for biosensing and autonomous molecular decision-making.
Winner-Takes-All Neural Network in DNA
Lulu Qian developed DNA-based winner-takes-all neural networks demonstrating molecular pattern recognition. Kevin Cherry implemented learning algorithms extending the approach. Computational researchers study how chemical reaction networks implement neural computation. Machine learning theorists analyze molecular implementation constraints.
Annihilator Reactions for Comparison
Lulu Qian proposed annihilator molecules for winner-takes-all selection. Kevin Cherry implemented and optimized annihilator-based pattern recognition algorithms during doctoral research. Chemical reaction network theorists analyze annihilator dynamics mathematically. Synthetic biologists employ annihilation for competitive selection in molecular circuits.
Catalytic Amplification in DNA Computing
David Zhang and colleagues developed catalytic DNA strand displacement cascades for signal amplification. Researchers engineer autocatalytic DNA circuits producing exponential amplification. The McGill iGEM team optimized catalytic amplification for biosensing applications enriching biological signals. Chemical engineers study catalytic reaction networks implementing fixed-gain amplifiers.
Mathematical Modeling of DNA Circuits
Daniel Gillespie developed stochastic simulation algorithms for chemical reaction networks. Erik Winfree and colleagues created computational tools specifically for DNA strand displacement systems. Systems biologists apply ordinary differential equations and stochastic methods to model molecular circuits. Synthetic biology teams use simulations before experimental implementation reducing costly trial-and-error.