The hybridization chain reaction in the development of ultrasensitive nucleic acid assays
2015
Abstract Most current in-vitro nucleic acid amplification techniques [e.g., polymerase chain reaction (PCR) and real-time PCR] are costly and require sophisticated instruments. Ultrasensitive, highly selective detection of nucleic acids using simple, low-cost assays is vital in genetic disease diagnosis, mutation detection and biodefense. Hybridization chain reaction (HCR) appears particularly appealing due to its enzyme-free nature, simple protocol and excellent amplification power. This article reviews progress in the research and development of HCR with an emphasis on its unique advantages and technical applications along with some discussion on the challenges and the future perspectives for HCR-based nucleic acid assays.
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