Recombinant production of SAG1 fused with xylanase in Pichia pastoris induced higher protective immunity against Eimeria tenella infection in chicken
文献类型： 外文期刊
作者： Liu, Chen 1 ; Wei, HanBing 1 ; Liang, Ruiying 2 ; Wang, Yuan 1 ; Su, Xiaoyun 1 ; Tu, Tao 1 ; Luo, Huiying 1 ; Yao, Bin 1 ; Ding, Jiabo 2 ; Tang, Xinming 2 ; Huang, Huoqing 1 ; Zhang, Honglian 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Anim Sci, State Key Lab Anim Nutr & Feeding, Beijing 100193, Peoples R China
2.Inst Anim Sci, Chinese Acad Agr Sci, Key Lab Anim Biosafety Risk Prevent & Control Nort, Beijing, Peoples R China
期刊名称：MICROBIAL BIOTECHNOLOGY （ 影响因子：5.7； 五年影响因子：6.4 ）
ISSN： 1751-7915
年卷期： 2024 年 17 卷 3 期
页码：
收录情况： SCI
摘要： Chicken coccidiosis is an intestinal disease caused by the parasite Eimeria, which severely damages the growth of chickens and causes significant economic losses in the poultry industry. Improvement of the immune protective effect of antigens to develop high efficiency subunit vaccines is one of the hotspots in coccidiosis research. Sporozoite-specific surface antigen 1 (SAG1) of Eimeria tenella (E. tenella) is a well-known protective antigen and is one of the main target antigens for the development of subunit, DNA and vector vaccines. However, the production and immunoprotective effects of SAG1 need to be further improved. Here, we report that both SAG1 from E. tenella and its fusion protein with the xylanase XynCDBFV-SAG1 are recombinant expressed and produced in Pichia pastoris (P. pastoris). The substantial expression quantity of fusion protein XynCDBFV-SAG1 is achieved through fermentation in a 15-L bioreactor, reaching up to about 2 g/L. Moreover, chickens immunized with the fusion protein induced higher protective immunity as evidenced by a significant reduction in the shedding of oocysts after E. tenella challenge infection compared with immunized with recombinant SAG1. Our results indicate that the xylanase enhances the immunogenicity of subunit antigens and has the potential for developing novel molecular adjuvants. The high expression level of fusion protein XynCDBFV-SAG1 in P. pastoris holds promise for the development of effective recombinant anti-coccidial subunit vaccine.
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