A self-amplifying mRNA vaccine expressing PRV gD induces robust immunity against virulent mutants
文献类型： 外文期刊
作者： Tong, Ling 1 ; Zhang, Xin 1 ; Li, Huan-huan 1 ; Zheng, Ya-ting 1 ; Liu, Ya-mei 1 ; Guo, Rong-li 7 ; Damiani, Armando Mario 8 ; Chen, Sai-sai 1 ; Zhang, Chuan-jian 1 ; Duan, Rui 9 ; Mao, Shu-yu 9 ; Yu, Jia-li 9 ; Zhang, Qian-qian 9 ; Tao, Ruo-nan 9 ; Osterrieder, Nikolaus 10 ; Xia, Shu-hua 9 ; Wang, Ji-chun 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Inst Vet Immunol & Engn, Nanjing 210014, Peoples R China
2.Jiangsu Acad Agr Sci, Natl Res Ctr Engn & Technol Vet Biol, Nanjing 210014, Peoples R China
3.Jiangsu Coinnovat Ctr Prevent & Control Important, Yangzhou 225009, Peoples R China
4.GuoTai Taizhou Ctr Technol Innovat Vet Biol, Taizhou 225300, Peoples R China
5.Nanjing Agr Univ, Coll Vet Med, Nanjing 210095, Peoples R China
6.Guangxi Univ, Coll Anim Sci & Technol, Nanning 530004, Peoples R China
7.Jiangsu Acad Agr Sci, Inst Vet Med, Nanjing 210014, Peoples R China
8.Natl Univ Cuyo, Fac Med Sci, RA-5500 Mendoza, Argentina
9.Jinfa Pharmaceut Nanjing Co Ltd, Nanjing 210032, Peoples R China
10.Hannover Sch Vet Med, Bunteweg 2, D-30559 Hannover, Germany
期刊名称：NPJ VACCINES （ 影响因子：6.5； 五年影响因子：6.6 ）
ISSN：
年卷期： 2025 年 10 卷 1 期
页码：
收录情况： SCI
摘要： Pseudorabies virus (PRV) causes an acute febrile infectious disease of pigs. Since 2011, PRV variants have appeared and spread nationwide in China. mRNA vaccines present a safe alternative and can stimulate humoral and cellular immunity. We constructed a self-amplifying mRNA (saRNA) vaccine containing gD gene of a highly virulent PRV variant. In mice, the PRV saRNA gD vaccine induced high levels of neutralizing antibodies. In piglets, vaccination with the PRV saRNA gD vaccine at a dose of as little as 5 mu g induced very strong humoral immunity and cellular immunity, providing full protection against challenge infection with very virulent PRV variants. Protection following vaccination with saRNA gD induced significantly stronger protection than attenuated live vaccines and inactivated vaccines. In addition, our results confirm that a PRV saRNA vaccine expressing only one antigen can induce excellent protection in weaned piglets. Hence, the PRV saRNA gD vaccine might be a very promising substitute for inactivated and live vaccines. Finally, we provide proof-of-concept for the development of self-amplifying mRNA vaccines for members of the Alphaherpesvirinae, including herpes simplex virus 1 and 2 as well as varicella zoster virus.
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