Molecular characterization and immune protection of an AN1-like zinc finger protein of Eimeria tenella

文献类型： 外文期刊

第一作者： Zhao, Huanzhi

作者： Zhao, Huanzhi;Zhao, Qiping;Zhu, Shunhai;Huang, Bing;Lv, Ling;Liu, Guiling;Li, Zhihang;Wang, Lu;Dong, Hui;Han, Hongyu;Liu, Guiling;Li, Zhihang

作者机构：

关键词： Eimeria tenella; AN1-Like zinc finger protein; Characterization; Vaccine; Chicken coccidiosis

期刊名称：PARASITOLOGY RESEARCH （ 影响因子：2.289； 五年影响因子：2.403 ）

ISSN： 0932-0113

年卷期： 2020 年 119 卷 2 期

页码：

收录情况： SCI

摘要： Coccidiosis is caused by multiple species of the apicomplexan protozoa Eimeria. Among them, Eimeria tenella is frequently considered to be the most pathogenic. Zinc finger proteins (ZnFPs) are a type of protein containing zinc finger domains. In the present study, a putative Eimeria tenella AN1-like ZnFP (E. tenella AN1-like zinc finger domain-containing protein, putative partial mRNA, EtAN1-ZnFP) was cloned and characterized, and its immune protective effects were evaluated. The 798-bp ORF sequence of EtAN1-ZnFP that encoded a protein of approximately 27.0 kDa was obtained. The recombinant EtAN1-ZnFP protein (rEtAN1-ZnFP) was expressed in Escherichia coli. Western blot analysis showed that the recombinant protein was recognized by the anti-GST monoclonal antibody and anti-sporozoite protein rabbit serum. qPCR analysis revealed that EtAN1-ZnFP was highly expressed in unsporulated oocysts and sporozoites. Immunostaining with an anti-rEtAN1-ZnFP antibody indicated that EtAN1-ZnFP was uniformly distributed in the cytoplasm of sporozoites, except for the refractive body; furthermore, this protein was evenly distributed in the cytoplasm of immature schizonts but seldom distributed in mature schizonts. The results of the in vitro invasion inhibition assay indicated that the antibodies against rEtAN1-ZnFP efficiently reduced the ability of E. tenella sporozoites to invade host cells. Animal challenge experiments demonstrated that the chickens immunized with rEtAN1-ZnFP protein significantly decreased mean lesion scores and fecal oocyst output compared with challenged control group. The results suggest that EtAN1-ZnFP can induce partial immune protection against infection with E. tenella and could be an effective candidate for the development of new vaccines.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序