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Chinese Journal of Biotechnology ; (12): 1235-1243, 2017.
Article in Chinese | WPRIM | ID: wpr-242262

ABSTRACT

Classical swine fever (CSF), one of OIE-listed diseases, is a highly contagious and economically important disease of pigs. Classical swine fever virus (CSFV) is the causative agent of CSF. The capsid (C) protein and the glycoproteins Erns, E1 and E2, are structural components of the virus. E2 is the most immunogenic protein of the CSFV glycoproteins, inducing neutralizing antibodies that provide protection against lethal CSFV challenge. In a previous study, we developed a murine MAb HQ06 against the E2 protein of CSFV. In this study, the variable region genes from HQ06 and constant regions gene of swine antibody are fused and cloned into the eukaryotic expression vectors to establish a cell line which can stably express a chimeric porcinized MAb (cHQ06) against E2 in CHO cell. The purified cHQ06 antibody protein was determined to be successfully generated, which exhibited high reactivity between cHQ06 and the E2 protein of CSFV by enzyme-linked immunosorbent assay (ELISA) and Western blotting. More importantly, we investigated the neutralizing activity of cHQ06 against CSFV. In conclusion, this study generated cHQ06 for efficient and stable production which can be used against to develop novel diagnostic assays, investigate the structure and function of the E2 protein and generate novel preparations of diagnosis and treatment.

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