Comparison of conventional RT-PCR, reverse-transcription loop-mediated isothermal amplification, and SYBR green I-based real-time RT-PCR in the rapid detection of bovine viral diarrhea virus nucleotide in contaminated commercial bovine sera batches

J Virol Methods. 2014 Oct:207:204-9. doi: 10.1016/j.jviromet.2014.05.020. Epub 2014 Jul 12.

Abstract

Bovine viral diarrhea virus (BVDV) can contaminate biological products produced in bovine or porcine cells or manufactured using bovine sera. A rapid, specific, sensitive, and practical method of detecting BVDV in bio-products is needed. The purpose of this study was to compare three assays with respect to their ability to accurately detect BVDV in biological samples, namely reverse-transcription loop-mediated isothermal amplification (RT-LAMP), SYBR green I-based real-time RT-PCR, and conventional RT-PCR. All assays detected BVDV nucleotide and differentiated between BVDV-free and -contaminated bovine sera successfully. In addition, the results were specific to BVDV: the amplification of samples containing the closely related classical swine fever virus or other pathogenic bovine viruses yielded negative results. The lowest detection threshold, 10(1) copies, was displayed by the SYBR green I-based real-time RT-PCR and RT-LAMP assay. This assay was also the most effective in the detection of BVDV contamination in a set of commercially available bovine sera. The field conditions suggest that RT-LAMP is specific and sensitive to detecting BVDV in biological samples and may be used for quality control of biomaterials.

Keywords: Bovine viral diarrhea virus; RT-PCR; Reverse-transcription loop-mediated isothermal amplification; SYBR green I-based real-time RT-PCR.

Publication types

  • Comparative Study
  • Evaluation Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Benzothiazoles
  • Cattle
  • Classical Swine Fever Virus
  • Diamines
  • Molecular Sequence Data
  • Nucleic Acid Amplification Techniques / methods*
  • Organic Chemicals / metabolism
  • Pestivirus / genetics
  • Pestivirus / isolation & purification*
  • Quinolines
  • RNA, Viral / genetics
  • RNA, Viral / isolation & purification*
  • Sequence Analysis, DNA
  • Serum / virology*
  • Staining and Labeling / methods
  • Temperature
  • Time Factors

Substances

  • Benzothiazoles
  • Diamines
  • Organic Chemicals
  • Quinolines
  • RNA, Viral
  • SYBR Green I

Associated data

  • GENBANK/KC176777