Addressing, amplifying and switching DNAzyme functions by electrochemically-triggered release of metal ions.

Addressing, amplifying and switching DNAzyme functions by electrochemically-triggered release of metal ions.
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DOI:
10.1039/c5sc00744e
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发表时间:
2015-06-01
期刊:
影响因子:
8.4
通讯作者:
Willner I
Willner I
中科院分区:
化学1区
文献类型:
--
作者:
Freage L;Trifonov A;Tel-Vered R;Golub E;Wang F;McCaskill JS;Willner I

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The addressable potential-controlled release of metal ions into electrolyte solutions containing mixtures of nucleic acids leads to the metal ion-guided generation of different DNAzymes and to the activation of DNA cascades. The design of artificial cells, which mimic the functions of native cells, is an ongoing scientific goal. The development of stimuli-responsive chemical systems that stimulate cascaded catalytic transformations, trigger chemical networks, and control vectorial branched transformations and dose-controlled processes, are the minimum requirements for mimicking cell functions. We have studied the electrochemical programmed release of ions from electrodes, which trigger selective DNAzyme-driven chemical reactions, cascaded reactions that self-assemble catalytic DNAzyme polymers, and the ON–OFF switching and dose-controlled operation of catalytic reactions. The addressable and potential-controlled release of Pb2+ or Ag+ ions into an electrolyte that includes a mixture of nucleic acids, results in the metal ion-guided selection of nucleic acids yielding the formation of specific DNAzymes, which stimulate orthogonal reactions or activate DNAzyme cascades.
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