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Development of a p72 trimer–based colloidal gold strip for detection of antibodies against African swine fever virus
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Development of a p72 trimer–based colloidal gold strip for detection of antibodies against African swine fever virus
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Journal Article
Development of a p72 trimer–based colloidal gold strip for detection of antibodies against African swine fever virus
2022
Overview
African swine fever virus (ASFV) causes a highly contagious and often lethal swine viral disease, and leads to tremendous economic losses to the swine industry. Unfortunately, there are no vaccines and effective antiviral agents available to prevent and control ASFV outbreaks. Therefore, it is necessary to develop simple and rapid strategies to monitor ASFV-infected pigs to restrain its spread. In the current study, ASFV capsid protein p72 was expressed along with its chaperone pB602L to form trimers in human embryonic kidney 293 (HEK293) cells. The p72 trimers were subsequently labeled with colloidal gold to develop a immunochromatographic strip. The strip showed high specificity to ASFV-positive serum and no cross-reactivity to other swine virus positive sera. Importantly, the strip showed a higher sensitivity of detecting ASFV antibodies in both positive standard serum and clinical serum samples than a commercial enzyme-linked immunosorbent assay (ELISA) kit. Taken together, these results demonstrate the strip as a reliable diagnostic tool against ASFV infection, which will be appropriate for application in prevention and control of ASFV.
Key points
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ASFV p72 trimers were successfully generated
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A colloidal gold strip was developed based on ASFV p72 trimers
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The strip is appropriate for detecting ASFV antibodies in the field
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Publisher
Springer Berlin Heidelberg,Springer,Springer Nature B.V
Subject
/ African Swine Fever - diagnosis
/ Analysis
/ Animals
/ Biomedical and Life Sciences
/ Colloids
/ Control
/ Enzyme-linked immunosorbent assay
/ Fever
/ Gold
/ Humans
/ Identification and classification
/ immunoaffinity chromatography
/ kidneys
/ Methods
/ Microbial Genetics and Genomics
/ Proteins
/ Strip
/ Swine
/ Trimers
/ Viruses
