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Updated: Dec 9, 2025

Plasmid-derived DNA Strand Displacement Gates for Implementing Chemical Reaction Networks

Plasmid-derived DNA Strand Displacement Gates for Implementing Chemical Reaction Networks

Published on: November 25, 2015

DNA Reaction-Diffusion Attractor Patterns.

Phillip James Dorsey¹, Dominic Scalise¹, Rebecca Schulman^1,2

¹Department of Chemical and Biomolecular Engineering, Johns Hopkins University, 3400 N. Charles Street, Baltimore, MD, 21218, USA.

Angewandte Chemie (International Ed. in English)

|September 11, 2020

Summary

This summary is machine-generated.

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Scientists created self-regenerating chemical patterns using reaction-diffusion systems. These "attractor patterns" can reform their precise shapes after being disturbed, mimicking living systems.

Area of Science:

Chemical kinetics
Pattern formation
Biomimicry

Background:

Living organisms create complex chemical patterns with micron-scale precision.
Understanding pattern regeneration is key to biomimicry and synthetic biology.

Purpose of the Study:

To design and demonstrate artificial chemical patterns that can self-regenerate.
To investigate the principles of pattern formation and recovery in engineered reaction-diffusion systems.

Main Methods:

Utilized oligonucleotide reaction networks for chemical pattern generation.
Employed photolithography and microfluidic delivery for precise control.
Applied localized UV light perturbations to test pattern recovery.

Main Results:

Keywords:

DNA nanotechnology chemical reaction networks microfluidics responsive hydrogels self-healing systems

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Last Updated: Dec 9, 2025

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Successfully formed linear and "hill"-shaped attractor patterns with defined shapes and timescales.
Demonstrated reliable pattern reformation after localized perturbations.
Observed pattern recovery even after repeated disturbances.

Conclusions:

Engineered far-from-equilibrium dynamics enable the creation of self-sustaining and regenerating molecular spatial patterns.
Designed chemical systems can evolve towards specific steady-state configurations, mimicking biological pattern maintenance.