Identification of a common conserved neutralizing linear B-cell epitope in the VP3 protein of waterfowl parvoviruses
2020
Lian, Caiyu | Zhang, Ruihua | Lan, Jingjing | Yang, Yupeng | Li, Hanqing | Sui, Nana | Xie, Zhijing | Jiang, Shijin
Waterfowl parvoviruses (WPVs) including goose parvovirus (GPV), novel GPV-related virus (NGPV) and Muscovy duck parvovirus (MDPV) cause significant economic losses and epizootic threat to the waterfowl industries, and little is known about the B-cell epitopes of WPVs. In this study, a monoclonal antibody (mAb) 5B5 against the VP3 protein of NGPV was used to identify the possible epitope in the three kinds of WPVs. The mAb 5B5 had neutralizing activities to the three viruses, and reacted with the conserved linear B-cell epitopes of ⁴³⁸LHNPPP⁴⁴³ in VP3 protein of GPV, NGPV and MDPV. To the authors’ best knowledge, this is the first report on identification of the common conserved neutralizing linear B-cell epitope on VP3 protein of three different WPVs, which would facilitate the development of a novel immunodiagnostic assay for rapid detection of WPV infection.
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