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Real-time PCR detection of multiple lamivudine-resistant mutations with displacing probes in a single tube

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Real-time PCR detection of multiple lamivudine-resistant mutations with displacing probes in a single tube.htm (413bytes)
Date
2007
Author
Wen, Huixin
Li, Qingge
李庆阁
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  • 生命科学-已发表论文 [5901]
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Abstract
Background: Detection of lamivudine-resistant hepatitis B virus (HBV) is essential to clinical diagnosis and treatment. Objectives: To establish a single tube, real-time PCR assay for simultaneous detection of multiple lamivudine-resistant mutations in serum samples. Study Design: By using four sequence-specific displacing probes labeled with different fluorophores, a single real-time PCR reaction can tell whether a sample contains any of the following HBV variants: wild-type, rtM204 mutant; mixtures of wild-type and rtM204 mutant; mixtures of rtM204 and rtL180 mutant; mixtures of wild-type, rtM204 mutant and rtL180 mutant. The assay was evaluated with 50 HBV mutation(s)-containing samples and 36 HBeAg-positive samples. Results: The results of the real-time PCR assay were consistent with the DNA sequencing, but with much higher sensitivity for detecting a mixture of quasispecies. As few as 10(2)-10(3) copies/ml HBV of all four sequences in pure population and as little as 5% mutant DNA in the presence of wild-type DNA can be detected. Conclusions: Application of this high throughput assay into clinical use should enable earlier diagnosis and better treatment of lamivudine-resistant HBV. (c) 2007 Elsevier B.V. All rights reserved.
Citation
Journal of Clinical Virology,Volume 38, Issue 4, April 2007, Pages 334-340
URI
http://dx.doi.org/doi:10.1016/j.jcv.2007.01.007
https://dspace.xmu.edu.cn/handle/2288/10663

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