Journal
ACS SYNTHETIC BIOLOGY
Volume 8, Issue 12, Pages 2756-2759Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssynbio.9b00335
Keywords
strand-displacement reaction; L-DNA; peptide nucleic acid; heterochiral DNA circuit; microRNA
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Funding
- Cancer Prevention and Research Institute of Texas [RR150038]
- National Institute of Biomedical Imaging and Bioengineering of the National Institutes of Health [R21EB027855]
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Heterochiral DNA strand-displacement reactions enable sequence-specific interfacing of oligonucleotide enantiomers, making it possible to interface native D-nucleic acids with molecular circuits built using nuclease-resistant L-DNA. To date, all heterochiral reactions have relied on peptide nucleic acid (PNA), which places potential limits on the scope and utility of this approach. Herein, we now report heterochiral strand-displacement in the absence of PNA, instead utilizing chimeric D/L-DNA complexes to interface oligonucleotides of the opposite chirality. We show that these strand-displacement reactions can be easily integrated into multicomponent heterochiral circuits, are compatible with both DNA and RNA inputs, and can be engineered to function in serum-supplemented medium. We anticipate that these new reactions will lead to a wider application of heterochiral strand-displacement, especially in the design of biocompatible nucleic acid circuits that can reliably operate within living systems.
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