Evaluation of the protective efficacy of a recombinant adenovirus-vectored SARS-CoV-2 vaccine candidate for veterinary use
文献类型: 外文期刊
作者: Chong Wang; Zhiyuan Wen; Gongxun Zhong; Lei Shuai; Chen Wang; Qilong Liu; Chenyu Ren; Jinying Ge; Xijun Wang; Jinliang Wang; Renqiang Liu; Xianfeng Zhang; Yuntao Guan; Xijun He; Zhigao Bu
关键词: Veterinary vaccine; SARS-CoV-2; adenovirus vector; protective efficacy; animal models
期刊名称: Frontiers in Cellular and Infection Microbiology
ISSN: 2235-2988
年卷期: 2025 年
页码:
收录情况: SCIE(2025版)
摘要: Since 2019, Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has posed a global health threat. Its high transmissibility and cross-species infectivity have disrupted public health systems and worldwide economies, with companion and agricultural animals, like cats and minks, showing high susceptibility. This study evaluated rAd5-S6P, a recombinant vaccine using an adenovirus type 5 vector expressing a modified SARS-CoV-2 spike protein, in murine, feline, and mink models. Results demonstrated that rAd5-S6P elicited a robust humoral immune response when administered via intramuscular, intranasal, and oral routes, which conferred complete protection in mice. In feline and mink models, immunization with rAd-S6P resulted in significantly reduced viral shedding after high-dose SARS-CoV-2 challenge, and no infectious virus was detected in any of the examined organs of minks. Collectively, rAd5-S6P exhibited protective efficacy across species, supporting its translational potential as a veterinary vaccine. These findings provide critical evidence for animal vaccination strategies to control SARS-CoV-2 circulation and reduce zoonotic transmission risks.
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