Mosaic RBD Nanoparticles Elicit Protective Immunity Against Multiple Human Coronaviruses in Animal Models

作者：Zhang, Yanjun; Sun, Jing; Zheng, Jian; Li, Suxiang; Rao, Haiyue; Dai, Jun; Zhang, Zhaoyong; Wang, Yanqun; Liu, Donglan; Chen, Zhao; Ran, Wei; Zhu, Airu; Li, Fang; Yan, Qihong; Wang, Yiliang; Yu, Kuai; Zhang, Shengnan; Wang, Dong; Tang, Yanhong; Liu, Banghui; Cheng, Linling; Huo, Jiandong^*; Perlman, Stanley^*; Zhao, Jingxian^*; Zhao, Jincun^*

来源：Advanced Science, 2024, 11(9).

DOI：10.1002/advs.202303366

• mosaic RBD nanoparticle vaccine coronavirus

To combat SARS-CoV-2 variants and MERS-CoV, as well as the potential re-emergence of SARS-CoV and spillovers of sarbecoviruses, which pose a significant threat to global public health, vaccines that can confer broad-spectrum protection against betacoronaviruses (beta-CoVs) are urgently needed. A mosaic ferritin nanoparticle vaccine is developed that co-displays the spike receptor-binding domains of SARS-CoV, MERS-CoV, and SARS-CoV-2 Wild-type (WT) strain and evaluated its immunogenicity and protective efficacy in mice and nonhuman primates. A low dose of 10 mu g administered at a 21-day interval induced a Th1-biased immune response in mice and elicited robust cross-reactive neutralizing antibody responses against a variety of beta-CoVs, including a series of SARS-CoV-2 variants. It is also able to effectively protect against challenges of SARS-CoV, MERS-CoV, and SARS-CoV-2 variants in not only young mice but also the more vulnerable mice through induction of long-lived immunity. Together, these results suggest that this mosaic 3-RBD nanoparticle has the potential to be developed as a pan-beta-CoV vaccine. @@@ The mosaic ferritin nanoparticle vaccine that co-displays the spike receptor-binding domains of SARS-CoV, MERS-CoV, and SARS-CoV-2 Wild-type (WT) strain induce Th1-biased immune response in mice and elicits robust cross-reactive neutralizing antibody responses against a variety of beta-CoVs, including a series of SARS-CoV-2 variants. This vaccine effectively protects against challenges of SARS-CoV, MERS-CoV, and SARS-CoV-2 variants in mice.image

• 单位
  1; 中国科学院; 广州医学院