Abstract
Models for gene expression instability by noncanonical DNA-nanostructures are introduced. The systems consist of a promoter-template scaffold that acts as a polymerization/nicking machinery that models, in the presence of polymerase/Nt.BbvCI and dNTPs, the autonomous synthesis of displaced strands mimicking the native "genes". Incorporation of noncanonical DNA structures into the scaffolds consisting of Sr2+-ion-stabilized G-quadruplexes, T-A·T triplexes, or ATP-aptamer complexes results in the perturbation of the polymerization/nicking DNA machineries and the synthesis of displaced strands-"genes" exhibiting other structures. By the dissociation of the noncanonical blockage units, the regeneration of the synthesis of the original intact displaced strands-"genes" is demonstrated. The study introduces conceptual means to eliminate destructive gene expression instability pathways.
Original language | English |
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Pages (from-to) | 5046-5052 |
Number of pages | 7 |
Journal | ACS Nano |
Volume | 14 |
Issue number | 4 |
DOIs | |
State | Published - 28 Apr 2020 |
Keywords
- aptamer
- DNAzyme
- G-quadruplex
- nanotechnology
- switch
- triplex