Molecular characterization and immune protective efficacy of 3 Eimeria tenella antigens
文献类型: 外文期刊
第一作者: Zhang, Lei
作者: Zhang, Lei;Song, Zhixuan;Li, Peiyao;Song, Xingju;Hu, Dandan;Song, Xingju;Hu, Dandan;Song, Xingju;Hu, Dandan;Tang, Xinming
作者机构:
关键词: Eimeria tenella; recombinant proteins; protective efficacy; IFN-g
期刊名称:POULTRY SCIENCE ( 影响因子:4.4; 五年影响因子:4.4 )
ISSN: 0032-5791
年卷期: 2024 年 103 卷 1 期
页码:
收录情况: SCI
摘要: Avian coccidiosis caused by Eimeria is a serious parasitic disease that poses a threat to the poultry industry. Currently, prevention and treatment mainly rely on the administration of anticoccidials and live oocyst vaccines. However, the prevalence of drug resistance and the inherent limitations of live vaccines have driven the development of novel vaccines. In this study, the surface protein (Et-SAG14), a previously annotated rhoptry protein (Eten5-B), and a gametocyte phosphoglucomutase (Et-PGM1) were characterized and the vaccine potential of the recombinant proteins were evaluated. Et-SAG14 was dispersed in the form of particles in the sporozoite and merozoite stages, whereas Et-PGM1 was distributed in the apical part of the sporozoite and merozoite stages. The previously annotated rhoptry Eten5-B was found not to be located in the rhoptry but distributed in the cytoplasm of sporozoites and merozoites. Immunization with rEten5-B significantly elevated host interferon gamma (IFN-gamma) and interleukin 10 (IL-10) transcript levels and exhibited moderate anticoccidial effects with an anticoccidial index (ACI) of 161. Unexpectedly, both recombinant Et-SAG14 and Et-PGM1 immunization significantly reduced host IFN-gamma and IL-10 transcription levels, and did not show protection against E. tenella challenge (ACI < 80). These results suggest that the rEten5-B protein can trigger immune protection against E. tenella and may be a potential and effective subunit vaccine for the control of coccidiosis in poultry.
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