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开发基于量子点的免疫染色学试验,用于检测传染性支气管炎病毒

Yizhuo He¹, Jiaxin Tian¹, Huiming Yang¹

¹National Key Laboratory of Veterinary Public Health Security, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China; Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China.

Poultry science

|July 1, 2025

概括

一种新的量子点检测方法可以快速检测家禽中的传染性支气管炎病毒 (IBV). 这种工具与qPCR具有良好的一致性,并且在现场诊断疾病时具有稳定性.

科学领域:

兽医病毒学兽医病毒学
免疫诊断免疫诊断免疫诊断免疫诊断
生物传感器技术技术

背景情况:

传染性支气管炎病毒 (IBV) 由于快速传播和变种的出现,对全球家禽生产构成重大威胁.
准确和快速的诊断对于控制商业家禽业务中的IBV疫情至关重要.

研究的目的:

开发和验证一种基于量子点的新型侧流量测定 (QBLFA) 用于快速和特定检测IBV.
评估开发的IBV诊断试验的灵敏度,特异性和稳定性.

主要方法:

制备一种单克隆抗体 (mAb) 5G4,针对IBV S1蛋白的SABD域.
使用mAb 5G4作为结合物和mAb N1 (准IBV N蛋白) 作为捕获抗体的QBLFA的开发.
优化抗体与量子点比率,化时间和抗体度,以提高检测性能.

主要成果:

QBLFA证明了各种IBV亚型的快速检测,没有与其他禽病原体的交叉反应.
该试验达到大约10^3.49 EID50的检测极限,并在室温下保持长达6个月的稳定性.
与qPCR的比较显示出良好的一致性,卡帕系数为0.799 (p < 0.001).

结论:

基于量子点的免疫染色学测定为在家禽中IBV感染的快速现场诊断提供了有价值的工具.
开发的试验为IBV疾病在现场管理提供了敏感,特异和稳定的替代方案.

关键词:

免疫染色学是一种免疫染色学.传染性支气管炎是一种传染性支气管炎.单克隆抗体是一种单克隆抗体.量子点是一个量子点.快速临床试验快速临床试验

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