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Development of Competitive Enzyme-Linked Immunosorbent Assays for Antibody Detection Based on Bluetongue Virus Monoclonal Antibodies.

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Bluetongue is a ruminant infectious disease that is characterized by hyperpyrexia, leukocyte decrease and mucosal ulcerative inflammation changes. In this study, three segments of Bluetongue virus (BTV)-8 VP2 protein (BTV-8A,… Click to show full abstract

Bluetongue is a ruminant infectious disease that is characterized by hyperpyrexia, leukocyte decrease and mucosal ulcerative inflammation changes. In this study, three segments of Bluetongue virus (BTV)-8 VP2 protein (BTV-8A, 8B, and 8C) were cloned into pET-28a (+) and pMAl-c5X vectors and expressed in Escherichia coli BL21 (DE3) as histidine (His)-tagged (His-8A/8B/8C) and maltose-binding protein (MBP)-tagged (MBP-8A/8B/8C) fusion proteins. After purification, His-8A/8B/8C were used to immunize BALB/mice and MBP-8A/8B/8C were used to screen for monoclonal antibody (mAb)-secreting hybridomas. Two mAbs (8B-5D4 and 8B-3G11) that could recognize BTV-8 were obtained. Two competitive enzyme-linked immunosorbent assays with good specificity and sensitivity using mAbs 8B-5D4 or 8B-3G11 as competitive antibody were established. With the joint reaction of these methods, serum samples containing anti-BTV-7 or anti-BTV-8 antibody could be screened out, suggesting that these methods would be useful for the diagnosis and epidemiological studies of BTV-8.

Keywords: competitive enzyme; antibody; linked immunosorbent; immunosorbent assays; bluetongue virus; enzyme linked

Journal Title: Viral immunology
Year Published: 2018

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