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A Novel Isothermal Assay of Borrelia burgdorferi by Recombinase Polymerase Amplification with Lateral Flow Detection

by Wei Liu 1,2, Hui-Xin Liu 1,2, Lin Zhang 1,2, Xue-Xia Hou 1,2, Kang-Lin Wan 1,2 and Qin Hao 1,2,*
State Key Laboratory of Infectious Diseases Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou 310003, China
Author to whom correspondence should be addressed.
Academic Editor: Li Lin
Int. J. Mol. Sci. 2016, 17(8), 1250;
Received: 3 May 2016 / Revised: 26 July 2016 / Accepted: 28 July 2016 / Published: 3 August 2016
(This article belongs to the Section Biochemistry)
A novel isothermal detection for recombinase polymerase amplification with lateral flow (LF-RPA) was established for Borrelia burgdorferi (B. burgdorferi) detection in this study. This assay with high sensitivity and specificity can get a visible result without any additional equipment in 30 min. We designed a pair of primers according to recA gene of B. burgdorferi strains and a methodology evaluation was performed. The results showed that the RPA assay based on the recA gene was successfully applied in B. burgdorferi detection, and its specific amplification was only achieved from the genomic DNA of B. burgdorferi. The detection limit of the new assay was about 25 copies of the B. burgdorferi genomic DNA. Twenty Lyme borreliosis patients’ serum samples were detected by LF-RPA assay, real-time qPCR and nested-PCR. Results showed the LF-RPA assay is more effective than nested-PCR for its shorter reaction time and considerably higher detection rate. This method is of great value in clinical rapid detection for Lyme borreliosis. Using the RPA assay might be a megatrend for DNA detection in clinics and endemic regions. View Full-Text
Keywords: Borrelia burgdorferi; DNA amplification; RPA; rapid detection Borrelia burgdorferi; DNA amplification; RPA; rapid detection
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Liu, W.; Liu, H.-X.; Zhang, L.; Hou, X.-X.; Wan, K.-L.; Hao, Q. A Novel Isothermal Assay of Borrelia burgdorferi by Recombinase Polymerase Amplification with Lateral Flow Detection. Int. J. Mol. Sci. 2016, 17, 1250.

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