Double antibody sandwich ELISA based on rabbit monoclonal antibody targeting gD protein for the detection of bovine herpesvirus 1

文献类型： 外文期刊

第一作者： Liu, Qiang

作者： Liu, Qiang;Niu, Xiaoxia;Jiang, Lingling;Zhang, Gang;Wang, Pu;Zhang, Sinong;Gao, Weifeng;Guo, Huichen;Wang, Yujiong;Li, Yong;Guo, Huichen

作者机构：

关键词： Bovine herpesvirus 1; Phage display; Rabbit monoclonal antibody; Double antibody sandwich

期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：8.5； 五年影响因子：8.7 ）

ISSN： 0141-8130

年卷期： 2025 年 303 卷

页码：

收录情况： SCI

摘要： Bovine herpesvirus 1 (BHV-1) is a highly contagious and latent virus that induces various diseases in the respiratory and reproductive systems. It is widespread in numerous countries, including China, and has a high positive detection rate, causing significant economic losses to global cattle industry. Timely and precise diagnosis is essential for effective preventative and control strategies. This study constructed a rabbit phage single chain fragment variable (scFv) display library with 7.14 x 1010 cfu/mL based on BHV-1 gD protein expressed in a prokaryotic system. Following three rounds of biopanning, three high-affinity scFv targeting the gD protein were obtained, and CHO-K1 cells were employed to express three high-affinity secreted rabbit monoclonal antibodies (RmAb). Double antibody sandwich enzyme-linked immunosorbent assay (DAS-ELISA) was established with D3 as the capture antibody and D2 as the detection antibody. The findings indicated that optimal reaction conditions were: 3 % BSA blocking, 90 min antigen incubation time, 15 min color development time, and a cutoff value of 0.8525. The specificity test demonstrated that the method exclusively responded with BHV-1, exhibiting no cross-reactivity with other bovine-related viruses. Additionally, the coefficients of variation between Intra-batch and Inter-batch were below 5 %, indicating good stability and reliability. This study is the first application of RmAb in developing a detection method for BHV-1, aimed at improving the specificity and sensitivity of the method, thereby offering robust scientific technical assistance for the epidemiological surveillance and prevention of this disease.

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