Triggered amplification by hybridization chain reaction.
Robert M. Dirks,Niles A. Pierce +1 more
Reads0
Chats0
TLDR
This work introduces the concept of hybridization chain reaction (HCR), in which stable DNA monomers assemble only upon exposure to a target DNA fragment, which allows DNA to act as an amplifying transducer for biosensing applications.Abstract:
We introduce the concept of hybridization chain reaction (HCR), in which stable DNA monomers assemble only upon exposure to a target DNA fragment. In the simplest version of this process, two stable species of DNA hairpins coexist in solution until the introduction of initiator strands triggers a cascade of hybridization events that yields nicked double helices analogous to alternating copolymers. The average molecular weight of the HCR products varies inversely with initiator concentration. Amplification of more diverse recognition events can be achieved by coupling HCR to aptamer triggers. This functionality allows DNA to act as an amplifying transducer for biosensing applications.read more
Citations
More filters
Journal ArticleDOI
Dynamic DNA nanotechnology using strand-displacement reactions
David K.Y. Zhang,Georg Seelig +1 more
TL;DR: Here, this work reviews DNA strand-displacement-based devices, and looks at how this relatively simple mechanism can lead to a surprising diversity of dynamic behaviour.
Journal ArticleDOI
Enzyme-Free Nucleic Acid Logic Circuits
TL;DR: The design and experimental implementation of DNA-based digital logic circuits using single-stranded nucleic acids as inputs and outputs are reported, suggesting applications in biotechnology and bioengineering.
Journal ArticleDOI
Programming biomolecular self-assembly pathways
TL;DR: Diverse molecular self-assembly and disassembly pathways are program using a ‘reaction graph’ abstraction to specify complementarity relationships between modular domains in a versatile DNA hairpin motif.
Journal ArticleDOI
Scaling Up Digital Circuit Computation with DNA Strand Displacement Cascades
Lulu Qian,Erik Winfree +1 more
TL;DR: This work experimentally demonstrated several digital logic circuits, culminating in a four-bit square-root circuit that comprises 130 DNA strands, which enables fast and reliable function in large circuits with roughly constant switching time and linear signal propagation delays.
Journal ArticleDOI
Control of DNA Strand Displacement Kinetics Using Toehold Exchange
David Y. Zhang,Erik Winfree +1 more
TL;DR: This work improves the understanding of the kinetics of nucleic acid reactions and will be useful in the rational design of dynamic DNA and RNA circuits and nanodevices.
References
More filters
Journal ArticleDOI
Primer-directed enzymatic amplification of DNA with a thermostable DNA polymerase
Randall Keichi Saiki,David H. Gelfand,Susanne Stoffel,Stephen J. Scharf,Russell Higuchi,Glenn Thomas Horn,Kary B. Mullis,Henry A. Erlich +7 more
TL;DR: A thermostable DNA polymerase was used in an in vitro DNA amplification procedure, the polymerase chain reaction, which significantly improves the specificity, yield, sensitivity, and length of products that can be amplified.
Journal ArticleDOI
Systematic evolution of ligands by exponential enrichment: RNA ligands to bacteriophage T4 DNA polymerase
Craig Tuerk,Larry Gold +1 more
TL;DR: High-affinity nucleic acid ligands for a protein were isolated by a procedure that depends on alternate cycles of ligand selection from pools of variant sequences and amplification of the bound species.
Journal ArticleDOI
In vitro selection of RNA molecules that bind specific ligands.
TL;DR: Subpopulations of RNA molecules that bind specifically to a variety of organic dyes have been isolated from a population of random sequence RNA molecules.
Journal ArticleDOI
Molecular Beacons: Probes that Fluoresce upon Hybridization
Sanjay Tyagi,Fred Russell Kramer +1 more
TL;DR: Novel nucleic acid probes that recognize and report the presence of specific nucleic acids in homogeneous solutions that undergo a spontaneous conforma-tional change when they hybridize to their targets are developed.
Journal ArticleDOI
Selective Colorimetric Detection of Polynucleotides Based on the Distance-Dependent Optical Properties of Gold Nanoparticles
TL;DR: A highly selective, colorimetric polynucleotide detection method based on mercaptoalkyloligonucleotide-modified gold nanoparticle probes is reported, which can detect about 10 femtomoles of an oligonucleotide.