The Pathogenicity of SARS-CoV-2 in hACE2 Transgenic Mice
By
Linlin Bao,
Wei Deng,
Baoying Huang,
Hong Gao,
Jiangning Liu,
Lili Ren,
Qiang Wei,
Pin Yu,
Yanfeng Xu,
Feifei Qi,
Yajin Qu,
Fengdi Li,
Qi Lv,
Wenling Wang,
Jing Xue,
Shuran Gong,
Mingya Liu,
Guanpeng Wang,
Shunyi Wang,
Zhiqi Song,
Linna Zhao,
Peipei Liu,
Li Zhao,
Fei Ye,
Huijuan Wang,
Weimin Zhou,
Na Zhu,
Wei Zhen,
Haisheng Yu,
Xiaojuan Zhang,
Li Guo,
Lan Chen,
Conghui Wang,
Ying Wang,
Xinming Wang,
Yan Xiao,
Qiangming Sun,
Hongqi Liu,
Fanli Zhu,
Chunxia Ma,
Lingmei Yan,
Mengli Yang,
Jun Han,
Wenbo Xu,
Wenjie Tan,
Xiaozhong Peng,
Qi Jin,
Guizhen Wu,
Chuan Qin
Posted 11 Feb 2020
bioRxiv DOI: 10.1101/2020.02.07.939389
(published DOI: 10.1038/s41586-020-2312-y)
Severe acute respiratory syndrome CoV-2 (SARS-CoV-2) caused the Corona Virus Disease 2019 (COVID-19) cases in China has become a public health emergency of international concern (PHEIC). Based on angiotensin converting enzyme 2 (ACE2) as cell entry receptor of SARS-CoV, we used the hACE2 transgenic mice infected with SARS-CoV-2 to study the pathogenicity of the virus. Weight loss and virus replication in lung were observed in hACE2 mice infected with SARS-CoV-2. The typical histopathology was interstitial pneumonia with infiltration of significant lymphocytes and monocytes in alveolar interstitium, and accumulation of macrophages in alveolar cavities. Viral antigens were observed in the bronchial epithelial cells, alveolar macrophages and alveolar epithelia. The phenomenon was not found in wild type mice with SARS-CoV-2 infection. The pathogenicity of SARS-CoV-2 in hACE2 mice was clarified and the Koch’s postulates were fulfilled as well, and the mouse model may facilitate the development of therapeutics and vaccines against SARS-CoV-2.
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