Full
Outline
To establish a diagnostic ELISA method for distinguishing RHDV infection and vaccination， the RdRp proteins of RHDV1 and RHDV2 were expressed by prokaryotic expression system. And these two soluble RdRp proteins were successfully purified. RdRp protein was used as coated antigen， an indirect ELISA method was established to detect serum antibody against RdRp. After purification and restriction enzyme digestion， the RdRp protein without tag was obtained with a size of 57 ku. Western blot analysis confirmed that both RdRp proteins reacted specifically with RHDV1 or RHDV2 infection sera. And there was no difference between the types of RdRp proteins. So RHDV2-RdRp was selected as a coating antigen at a coating concentration of 2.5 μg·mL-1. The optimal serum dilution was 1∶100 and the incubation was 60 min at 37 ℃. The optimal dilution of enzyme-labeled antibody was 1∶10 000. The cut-off value was 0.225. It was proved that the ELISA method has good specificity and sensitivity. The coefficient of variation in both intra-batch and inter-batch repeatability test was less than 10%， which indicating a good stability. The samples after RHDV challenge and the serum samples after genetic engineering vaccine immunization were tested， and the results showed that RHDV infection can induce the production of serum antibodies against RdRp protein， but the serum tests after genetic engineering vaccine immunization were negative. In this study， the ELISA method based on RHDV-RdRp protein can distinguish between genetic engineering vaccine immunity and RHDV infection， which provides an effective detection method for clinical screening of RHDV infection.
139
64
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
