Enhanced Immune Responses in Mice Induced by the c-di-GMP Adjuvanted Inactivated Vaccine for Pseudorabies Virus

文献类型： 外文期刊

第一作者： Hou, Liting

作者： Hou, Liting;Yu, Xiaoming;Zhang, Yuanyuan;Du, Luping;Zhang, Yuanpeng;Cheng, Haiwei;Zheng, Qisheng;Chen, Jin;Hou, Jibo;Hou, Liting;Yu, Xiaoming;Zhang, Yuanyuan;Du, Luping;Zhang, Yuanpeng;Cheng, Haiwei;Zheng, Qisheng;Chen, Jin;Hou, Jibo;Hou, Liting;Yu, Xiaoming;Zhang, Yuanyuan;Du, Luping;Zhang, Yuanpeng;Cheng, Haiwei;Zheng, Qisheng;Chen, Jin;Hou, Jibo;Hou, Liting;Yu, Xiaoming;Zhang, Yuanyuan;Du, Luping;Zhang, Yuanpeng;Cheng, Haiwei;Zheng, Qisheng;Chen, Jin;Hou, Jibo

作者机构：

关键词： c-di-GMP; PRV inactivated vaccine; long-term humoral immunity; T follicular helper (Tfh) cells; germinal center (GC) B cell

期刊名称：FRONTIERS IN IMMUNOLOGY （ 影响因子：8.786； 五年影响因子：8.876 ）

ISSN： 1664-3224

年卷期： 2022 年 13 卷

页码：

收录情况： SCI

摘要： Cyclic dimeric guanosine monophosphate (c-di-GMP) is a bacterial second messenger with immunomodulatory activities in mice, suggesting potential applications as a vaccine immunopotentiator or therapeutic agent. In this study, we evaluated the efficacy of c-di-GMP as an immunopotentiator for pseudorabies virus (PRV) inactivated vaccine in a murine model. We found that c-di-GMP improved the humoral and cellular immune responses induced by PRV inactivated vaccine and its effects on immunity reached the level comparable to that of a live attenuated vaccine. Furthermore, c-di-GMP enhanced the murine antibody response against the viral glycoprotein gB up to 120 days after immunization. The c-di-GMP-adjuvanted PRV inactivated vaccine induced long-term humoral immunity by promoting a potent T follicular helper cell response, which is known to directly control the magnitude of the germinal center B cell response. Furthermore, the c-di-GMP enhanced the response of bone marrow plasma cells and upregulated the expression of Bcl-2 and Mcl-1, which have been identified as anti-apoptotic regulatory genes of germinal center and memory B cells. Our findings open a new avenue for improving the immune efficacy of PRV inactivated vaccines.

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