Boonchit Suthisak, Xuan Xuenan, Yokoyama Naoaki, Goff Will L, Wagner Gale, Igarashi Ikuo
National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan.
J Clin Microbiol. 2002 Oct;40(10):3771-5. doi: 10.1128/JCM.40.10.3771-3775.2002.
The gene encoding Babesia bovis rhoptry-associated protein 1 (RAP-1) was used to develop an enzyme-linked immunosorbent assay (ELISA) to measure specific antibodies against B. bovis. The B. bovis RAP-1 gene was subcloned into a baculovirus transfer vector, and the RAP-1 protein was expressed in insect cells infected with a recombinant baculovirus. The recombinant B. bovis RAP-1 of 65 kDa was detected with anti-RAP-1 mouse serum by Western blotting, and this recombinant RAP-1 was used as an antigen in the ELISA. The ELISA was able to differentiate between B. bovis-infected sera and B. bigemina-infected sera or noninfected normal bovine sera. The results demonstrate that the recombinant RAP-1 expressed in insect cells might be a useful antigen for the detection of antibodies to B. bovis.
编码牛巴贝斯虫(Babesia bovis)棒状体相关蛋白1(RAP-1)的基因被用于开发一种酶联免疫吸附测定(ELISA),以检测针对牛巴贝斯虫的特异性抗体。牛巴贝斯虫RAP-1基因被亚克隆到杆状病毒转移载体中,并且RAP-1蛋白在感染重组杆状病毒的昆虫细胞中表达。通过蛋白质印迹法用抗RAP-1小鼠血清检测到了65 kDa的重组牛巴贝斯虫RAP-1,并且这种重组RAP-1被用作ELISA中的抗原。该ELISA能够区分牛巴贝斯虫感染血清与双芽巴贝斯虫(B. bigemina)感染血清或未感染的正常牛血清。结果表明,在昆虫细胞中表达的重组RAP-1可能是用于检测牛巴贝斯虫抗体的有用抗原。