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Autocatalytic aptazymes enable ligand-dependent exponential amplification of RNA

RNA enzymes have been developed that undergo self-sustained replication at a constant temperature in the absence of proteins1. These RNA molecules amplify exponentially through a cross-replicative process, whereby two enzymes catalyze each other’s synthesis by joining component oligonucleotides. Oth...

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Detalles Bibliográficos
Autores principales: Lam, Bianca J., Joyce, Gerald F.
Formato: Texto
Lenguaje:English
Publicado: 2009
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2695811/
https://www.ncbi.nlm.nih.gov/pubmed/19234448
http://dx.doi.org/10.1038/nbt.1528
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author Lam, Bianca J.
Joyce, Gerald F.
author_facet Lam, Bianca J.
Joyce, Gerald F.
author_sort Lam, Bianca J.
collection PubMed
description RNA enzymes have been developed that undergo self-sustained replication at a constant temperature in the absence of proteins1. These RNA molecules amplify exponentially through a cross-replicative process, whereby two enzymes catalyze each other’s synthesis by joining component oligonucleotides. Other RNA enzymes have been made to operate in a ligand-dependent manner by combining a catalytic domain with a ligand-binding domain (aptamer) to provide an “aptazyme”2,3. The principle of ligand-dependent RNA catalysis now has been extended to the cross-replicating RNA enzymes so that exponential amplification occurs in the presence, but not the absence, of the cognate ligand. The exponential growth rate of the RNA depends on the concentration of the ligand, enabling one to determine the concentration of ligand in a sample. This process is analogous to quantitative PCR (qPCR), but can be generalized to a wide variety of targets, including proteins and small molecules that are relevant to medical diagnostics and environmental monitoring.
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spelling pubmed-26958112009-09-01 Autocatalytic aptazymes enable ligand-dependent exponential amplification of RNA Lam, Bianca J. Joyce, Gerald F. Nat Biotechnol Article RNA enzymes have been developed that undergo self-sustained replication at a constant temperature in the absence of proteins1. These RNA molecules amplify exponentially through a cross-replicative process, whereby two enzymes catalyze each other’s synthesis by joining component oligonucleotides. Other RNA enzymes have been made to operate in a ligand-dependent manner by combining a catalytic domain with a ligand-binding domain (aptamer) to provide an “aptazyme”2,3. The principle of ligand-dependent RNA catalysis now has been extended to the cross-replicating RNA enzymes so that exponential amplification occurs in the presence, but not the absence, of the cognate ligand. The exponential growth rate of the RNA depends on the concentration of the ligand, enabling one to determine the concentration of ligand in a sample. This process is analogous to quantitative PCR (qPCR), but can be generalized to a wide variety of targets, including proteins and small molecules that are relevant to medical diagnostics and environmental monitoring. 2009-02-22 2009-03 /pmc/articles/PMC2695811/ /pubmed/19234448 http://dx.doi.org/10.1038/nbt.1528 Text en http://www.nature.com/authors/editorial_policies/license.html#terms Users may view, print, copy, and download text and data-mine the content in such documents, for the purposes of academic research, subject always to the full Conditions of use:http://www.nature.com/authors/editorial_policies/license.html#terms
spellingShingle Article
Lam, Bianca J.
Joyce, Gerald F.
Autocatalytic aptazymes enable ligand-dependent exponential amplification of RNA
title Autocatalytic aptazymes enable ligand-dependent exponential amplification of RNA
title_full Autocatalytic aptazymes enable ligand-dependent exponential amplification of RNA
title_fullStr Autocatalytic aptazymes enable ligand-dependent exponential amplification of RNA
title_full_unstemmed Autocatalytic aptazymes enable ligand-dependent exponential amplification of RNA
title_short Autocatalytic aptazymes enable ligand-dependent exponential amplification of RNA
title_sort autocatalytic aptazymes enable ligand-dependent exponential amplification of rna
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2695811/
https://www.ncbi.nlm.nih.gov/pubmed/19234448
http://dx.doi.org/10.1038/nbt.1528
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