Generation and Characterization of Monoclonal Antibody Against Porcine Epidemic Diarrhea Virus Nonstructural Protein 13.

Generation and Characterization of Monoclonal Antibody Against Porcine Epidemic Diarrhea Virus Nonstructural Protein 13. Monoclon Antib Immunodiagn Immunother. 2020 Dec;39(6):222-227 Authors: Chen J, Ding T, Liang W, Li T, Wu S, Xie W, Ding N, Tang Y, Ding Z Abstract Porcine epidemic diarrhea virus (PEDV) is an enteric swine coronavirus. Recent PEDV eruption in East Asian and North American countries made it notorious and caused huge economic losses to the porcine industry. Nonstructural protein 13 (nsp13) is a nucleic acid helicase/NTPase that plays a critical role in viral gene transcription and viral replication. To investigate the function of nsp13 in the context of PEDV infection, here, PEDV nsp13 gene was amplified and cloned into pET28a/pET30a/pGEX-6P-1 expression vectors. The recombinant his-tagged nsp13 and GST-tagged nsp13 were expressed. Purified his-tagged nsp13 from pET28a-nsp13 vectors was chosen for immunization. Three monoclonal antibodies (mAbs) named 5A9, 5C7, and 5G7 were identified from the hybridoma cells, and were characterized by Western blot analysis and immunofluorescent assay, which demonstrated high specificity of these three mAbs with pCAGGS-HA-nsp13. All three mAbs belong to IgG1+ kappa subclass. However, only mAb 5A9 could effectively and specifically recognize PEDV expressing nsp13. Furthermore, the generated antibody against nsp13 could be applied to investigate nsp13 function during PEDV replication. ...
Source: Monoclonal Antibodies in Immunodiagnosis and Immunotherapy - Category: Microbiology Tags: Monoclon Antib Immunodiagn Immunother Source Type: research