A Universal Influenza Nanovaccine for "Mixing Vessel" Hosts Confers Potential Ability to Block Cross-Species Transmission
文献类型： 外文期刊
作者： Ding, Peiyang 1 ; Jin, Qianyue 1 ; Zhou, Wen 1 ; Chai, Yongxiao 1 ; Liu, Xiao 1 ; Wang, Yao 1 ; Chen, Xinxin 1 ; Guo, Jun 1 ;
作者机构： 1.Henan Acad Agr Sci, Henan Prov Key Lab Anim Immunol, Zhengzhou 450002, Henan, Peoples R China
2.Northwest A&F Univ, Coll Vet Med, Yangling 712100, Shaanxi, Peoples R China
3.Yangzhou Univ, Jiangsu Coinnovat Ctr Prevent & Control Important, Yangzhou 225009, Jiangsu, Peoples R China
4.Henan Agr Univ, Coll Anim Sci & Vet Med, Zhengzhou 450002, Henan, Peoples R China
5.Chinese Acad Sci, Inst Microbiol, CAS Key Lab Pathogen Microbiol & Immunol, Beijing 100101, Peoples R China
关键词： cross-species transmission; influenza A virus; M2e; porcine circovirus type 2; universal nanovaccines
期刊名称：ADVANCED HEALTHCARE MATERIALS （ 影响因子：9.933； 五年影响因子：9.055 ）
ISSN： 2192-2640
年卷期：
页码：
收录情况： SCI
摘要： Influenza A virus (IAV), a deadly zoonotic pathogen, poses a tremendous threat and burden to global health systems. Pigs act as "mixing vessel" hosts to support and generate new pandemic viruses. Preventing the spread of IAV in pigs effectively can delay or even block cross-species transmission. Universal vaccines based on the highly conserved ectodomain of influenza matrix protein 2 (M2e) have been widely reported, but have not been applied due to inadequate protection. Porcine circovirus type 2 (PCV2) causes immunosuppression and promotes swine influenza virus (SIV) infection. Here, M2e is inserted into capsid protein of PCV2 without burying the neutralizing epitopes and self-assembles to form a bivalent nanovaccine. Inoculation with the nanovaccine induces robust M2e- and PCV2-specific immune responses. The nanovaccine confers protection against lethal challenges of IAV from different species in mice, and significantly reduces SIV titers in pigs' respiratory tract and blocks SIV transmission. These results indicate that the nanovaccine is an economical and promising PCV2 and universal IAV bivalent vaccine, and it will synergistically and powerfully offer potential ability to block IAV cross-species reassortment and transmission.
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