抗ASFV p72蛋白的单克隆抗体、其抗原表位肽及应用

By using the natural conformation p72 protein as an immunogen and combining it with hybridoma cell fusion screening technology, a high-affinity monoclonal antibody 3B9 was obtained, which solved the problems of insufficient antibody specificity and unclear epitopes in ASFV detection, and achieved high sensitivity and high specificity ASFV detection.

CN122404541APending Publication Date: 2026-07-17LONGHU LAB

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LONGHU LAB
Filing Date
2026-04-24
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing ASFV detection and diagnostic technologies, the correct folding of the p72 protein depends on the assistance of the molecular chaperone B602L. The protein obtained from prokaryotic expression often exists in the form of inclusion bodies, which results in insufficient antibody specificity, low affinity, unclear recognition epitopes, and complex and costly preparation processes, making it difficult to meet the needs of rapid detection and large-scale application.

Method used

Using the natural conformation of p72 protein as an immunogen, combined with hybridoma cell fusion screening and epitope localization technology, a high-affinity monoclonal antibody 3B9 was obtained. This antibody specifically recognizes the conserved linear epitope of p72 protein, establishing a highly sensitive and specific detection method.

Benefits of technology

It achieves high sensitivity and high specificity detection of ASFV antigen, clarifies epitope information, and the antibody has high titer, high affinity and good stability, reducing the risk of false positives and making it suitable for long-term storage and large-scale application.

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Abstract

本发明公开了一种抗ASFV p72蛋白的单克隆抗体、其抗原表位肽及应用,旨在解决现有ASFV检测诊断及ASFV预防和治疗试剂或药物不全面、p72蛋白抗体性能不足且表位信息有限的技术问题。本发明采用天然构象ASFV p72蛋白为免疫原,通过杂交瘤细胞融合筛选技术,获得了一株亚型明确、高效价、高亲和力、高特异性的单克隆抗体3B9,并鉴定出所识别的保守线性B细胞表位。基于上述抗体,构建了高灵敏度、高特异性的ASFV抗原检测体系,经测定,该方法具有明确的临界值、良好的重复性和优异的稳定性,为ASFV的血清学检测、表位研究和疫苗开发提供了有力工具。
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