Development of a Taqman RT-PCR assay for the detection and quantification of negatively stranded RNA of human enteroviruses: evidence for false-priming and improvement by tagged RT-PCR

J Virol Methods. 2008 Nov;153(2):182-9. doi: 10.1016/j.jviromet.2008.07.010. Epub 2008 Aug 29.

Abstract

Human enteroviruses are among the most common viruses infecting humans. These viruses are known to be able to infect a wide range of tissues and are believed to establish persistent infections. Enteroviruses are positive-sense single-stranded RNA viruses whose replication involves the synthesis of negative strand intermediates. Therefore, the specific detection of negatively stranded viral RNA in tissues or cells is a reliable marker of active enteroviral replication. The present report presents the development of a real-time RT-PCR allowing the specific detection and quantification of negatively stranded viral RNA. Since it was known that specific amplification of single-stranded RNA can be made difficult by false-priming events leading to false-positive or overestimated results, the assay was developed by using a tagged RT primer. This tagged RT-PCR was shown to be able to amplify specifically negative RNA of enteroviruses grown in cell cultures by preventing the amplification of cDNAs generated by false-priming.

Publication types

  • Evaluation Study

MeSH terms

  • Cell Line
  • DNA Primers
  • DNA, Complementary
  • Enterovirus / genetics*
  • Enterovirus / isolation & purification*
  • Enterovirus / physiology
  • Humans
  • RNA, Viral / analysis*
  • Reverse Transcriptase Polymerase Chain Reaction / methods*
  • Sensitivity and Specificity
  • Taq Polymerase
  • Virus Replication

Substances

  • DNA Primers
  • DNA, Complementary
  • RNA, Viral
  • Taq Polymerase