Journal
CHEMICAL SOCIETY REVIEWS
Volume 37, Issue 6, Pages 1153-1165Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b718428j
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Catalytic nucleic acids (DNAzymes or ribozymes) are selected by the systematic evolution of ligands by exponential enrichment process (SELEX). The catalytic functions of DNAzymes or ribozymes allow their use as amplifying labels for the development of optical or electronic sensors. The use of catalytic nucleic acids for amplified biosensing was accomplished by designing aptamer-DNAzyme conjugates that combine recognition units and amplifying readout units as in integrated biosensing materials. Alternatively, DNA machines'' that activate enzyme cascades and yield DNAzymes were tailored, and the systems led to the ultrasensitive detection of DNA. DNAzymes are also used as active components for constructing nanostructures such as aggregated nanoparticles and for the activation of logic gate operations that perform computing.
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