TY - JOUR
T1 - Reliable quantification of rhinovirus species C using real-time PCR
AU - Sikazwe, Chisha T.
AU - Chidlow, G.R.
AU - Imrie, Allison
AU - Smith, David William
PY - 2016/9/1
Y1 - 2016/9/1
N2 - © 2016 The Authors.Background: Rhinovirus C (RV-C) is an important respiratory pathogen of children, but little is known about its contribution to disease severity, though viral load appears to be important. Difficulty in RV-C cultivation and target sequence variation has precluded the development of a PCR based quantification method. Objective: The aim of this study was to develop and validate reverse transcription quantitative PCR (RT-qPCR) assays for a broad range of circulating RV-C genotypes in nasopharyngeal aspirates (NPAs). Study design: Four assays were designed to quantify a 296 bp region located within the 5' untranslated region (UTR) of RV-C types. These assays were based on in silico analysis of available RV-C sequences. Probes were designed to provide 100% homology to the corresponding RV-C genotypes. Results: The linear dynamic range of each of the four assays spanned eight orders of magnitude (104-1011 copies/mL). The limit of detection for assays 1-4 was estimated to be 1147 copies/mL, 765 copies/mL, 1138 copies/mL and 1470 copies/mL respectively. Each assay demonstrated a strong linear relationship (r2 = >0.995) and amplification efficiency greater than 95%. Repeatability and reproducibility of the method were shown to be high, with coefficients of variations lower than 8% and 15% respectively.
AB - © 2016 The Authors.Background: Rhinovirus C (RV-C) is an important respiratory pathogen of children, but little is known about its contribution to disease severity, though viral load appears to be important. Difficulty in RV-C cultivation and target sequence variation has precluded the development of a PCR based quantification method. Objective: The aim of this study was to develop and validate reverse transcription quantitative PCR (RT-qPCR) assays for a broad range of circulating RV-C genotypes in nasopharyngeal aspirates (NPAs). Study design: Four assays were designed to quantify a 296 bp region located within the 5' untranslated region (UTR) of RV-C types. These assays were based on in silico analysis of available RV-C sequences. Probes were designed to provide 100% homology to the corresponding RV-C genotypes. Results: The linear dynamic range of each of the four assays spanned eight orders of magnitude (104-1011 copies/mL). The limit of detection for assays 1-4 was estimated to be 1147 copies/mL, 765 copies/mL, 1138 copies/mL and 1470 copies/mL respectively. Each assay demonstrated a strong linear relationship (r2 = >0.995) and amplification efficiency greater than 95%. Repeatability and reproducibility of the method were shown to be high, with coefficients of variations lower than 8% and 15% respectively.
U2 - 10.1016/j.jviromet.2016.05.014
DO - 10.1016/j.jviromet.2016.05.014
M3 - Article
C2 - 27216896
SN - 0166-0934
VL - 235
SP - 65
EP - 72
JO - Journal of Virological Methods
JF - Journal of Virological Methods
ER -