Main content area

Development of a nanoparticle-assisted PCR assay for detection of bovine respiratory syncytial virus

Liu, Zhankui, Li, Jianyou, Liu, Zeyu, Li, Jiawei, Li, Zhijie, Wang, Chao, Wang, Jianke, Guo, Li
BMC veterinary research 2019 v.15 no.1 pp. 110
Bovine herpesvirus 1, Bovine orthopneumovirus, Bovine parainfluenza virus 3, Bovine viral diarrhea virus, bovine respiratory disease, cattle, cross reaction, monitoring, nanoparticles, pathogens, plasmids, polymerase chain reaction, respiratory tract diseases, viruses, China
BACKGROUND: Bovine respiratory syncytial virus (BRSV) is a common pathogen causing respiratory disease in cattle and a significant contributor to the bovine respiratory disease (BRD) complex. BRSV is widely distributed around the world, causing severe economic losses. This study we established a new molecular detection method of BRSV pathogen NanoPCR attributed to the combination of nano-particles in traditional PCR (Polymerase chain reaction) technology. RESULTS: In this study, the BRSV NanoPCR assay was developed, and its specificity and sensitivity were investigated. The results showed that no cross-reactivity was observed for the NanoPCR assay for related viruses, including the infectious bovine rhinotracheitis virus (IBRV), bovine viral diarrhea virus (BVDV), and bovine parainfluenza virus type 3 (BPIV3), and the assay was more sensitive than the conventional PCR assay, with a detection limit of 1.43 × 10² copies recombinant plasmids per reaction, compared with 1.43 × 10³ copies for conventional PCR analysis. Moreover, thirty-nine clinical bovine samples collected from two provinces in North-Eastern China, 46.15% were determined BRSV positive by our NanoPCR assay, compared with 23.07% for conventional PCR. CONCLUSIONS: This is the first report to demonstrate the application of a NanoPCR assay for the detection of BRSV. The sensitive and specific NanoPCR assay developed in this study can be applied widely in clinical diagnosis and field surveillance of BRSV infection.