DNA-based programmable gate arrays for general-purpose DNA computing
The past decades have witnessed the evolution of electronic and photonic integrated circuits, from application specific to programmable 1 , 2 . Although liquid-phase DNA circuitry holds the potential for massive parallelism in the encoding and execution of algorithms 3 , 4 , the development of gener...
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Published in | Nature (London) Vol. 622; no. 7982; pp. 292 - 300 |
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Main Authors | , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
London
Nature Publishing Group UK
12.10.2023
Nature Publishing Group |
Subjects | |
Online Access | Get full text |
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Summary: | The past decades have witnessed the evolution of electronic and photonic integrated circuits, from application specific to programmable
1
,
2
. Although liquid-phase DNA circuitry holds the potential for massive parallelism in the encoding and execution of algorithms
3
,
4
, the development of general-purpose DNA integrated circuits (DICs) has yet to be explored. Here we demonstrate a DIC system by integration of multilayer DNA-based programmable gate arrays (DPGAs). We find that the use of generic single-stranded oligonucleotides as a uniform transmission signal can reliably integrate large-scale DICs with minimal leakage and high fidelity for general-purpose computing. Reconfiguration of a single DPGA with 24 addressable dual-rail gates can be programmed with wiring instructions to implement over 100 billion distinct circuits. Furthermore, to control the intrinsically random collision of molecules, we designed DNA origami registers to provide the directionality for asynchronous execution of cascaded DPGAs. We exemplify this by a quadratic equation-solving DIC assembled with three layers of cascade DPGAs comprising 30 logic gates with around 500 DNA strands. We further show that integration of a DPGA with an analog-to-digital converter can classify disease-related microRNAs. The ability to integrate large-scale DPGA networks without apparent signal attenuation marks a key step towards general-purpose DNA computing.
Generic single-stranded oligonucleotides used as a uniform transmission signal can reliably integrate large-scale DNA integrated circuits with minimal leakage and high fidelity for general-purpose computing. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0028-0836 1476-4687 |
DOI: | 10.1038/s41586-023-06484-9 |