Lin Liu, Quan-Fu Zhang, Chuan Li, Jian-Dong Li, Xiao-Lin Jiang, Fu-Shun Zhang, Wei Wu, Mi-Fang Liang, De-Xin Li
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[A double antibody sandwich ELISA based assay for titration of severe fever with thrombocytopenia syndrome virus].
Objective: To develop an assay for titration of severe fever with thrombocytopenia syndrome virus (SFTSV) based on double antibody sandwich ELISA.
Methods: A double antibody sandwich ELISA was developed for detection of SFTSV based on SFTSV nucleocapsid (N) protein specific poly- and monoclonal antibodies, procedures were optimized and evaluated. This ELISA based titration assay was compared with fluorescence assasy and plaque assay based titration method.
Results: The results suggested that the titers obtained by ELISA based method are consistent with those obtained by IFA based method (R = 0.999) and the plaque assay titration method (R = 0.949).
Conclusion: The novel ELISA based titration method with high sensitivity and specificity is easy to manage and perform, and can overcome the subjectivity associated with result determination of the fluorescence assay and plaque assay based methods. The novel ELISA based titration method can also be applied to high throughput detection.
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