An intranasal combination vaccine induces systemic and mucosal immunity against COVID-19 and influenza

Autor: Man Xing, Gaowei Hu, Xiang Wang, Yihan Wang, Furong He, Weiqian Dai, Xinyu Wang, Yixin Niu, Jiaojiao Liu, Hui Liu, Xiaoyan Zhang, Jianqing Xu, Qiliang Cai, Dongming Zhou
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: npj Vaccines, Vol 9, Iss 1, Pp 1-14 (2024)
Druh dokumentu: article
ISSN: 2059-0105
DOI: 10.1038/s41541-024-00857-5
Popis: Abstract Despite prolonged surveillance and interventions, the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and influenza viruses continue to pose a severe global health burden. Thus, we developed a chimpanzee adenovirus-based combination vaccine, AdC68-HATRBD, with dual specificity against SARS-CoV-2 and influenza virus. When used as a standalone vaccine, intranasal immunization with AdC68-HATRBD induced comprehensive and potent immune responses consisting of immunoglobin (Ig) G, mucosal IgA, neutralizing antibodies, and memory T cells, which protected the mice from BA.5.2 and pandemic H1N1 infections. When used as a heterologous booster, AdC68-HATRBD markedly improved the protective immune response of the licensed SARS-CoV-2 or influenza vaccine. Therefore, whether administered intranasally as a standalone or booster vaccine, this combination vaccine is a valuable strategy to enhance the overall vaccine efficacy by inducing robust systemic and mucosal immune responses, thereby conferring dual lines of immunological defenses for these two viruses.
Databáze: Directory of Open Access Journals