Cross-host evolution of severe acute respiratory syndrome coronavirus in palm civet and human

Huai-Dong Song (1) , Chang-Chun Tu , Guo-Wei Zhang , Sheng-Yue Wang , Kui Zheng , Lian-Cheng Lei , Qiu-Xia Chen , Yu-Wei Gao , Hui-Qiong Zhou , Hua Xiang , Hua-Jun Zheng , Shur-Wern Wang Chern , Feng Cheng , Chun-Ming Pan , Hua Xuan , Sai-Juan Chen , Hui-Ming Luo , Duan-Hua Zhou , Yu-Fei Liu , Jian-Feng He , Peng-Zhe Qin , Ling-Hui Li , Yu-Qi Ren , Wen-Jia Liang , Ye-Dong Yu , Larry Anderson , Ming Wang , Rui-Heng Xu , Xin-Wei Wu , Huan-Ying Zheng , Jin-Ding Chen , Guodong Liang , Yang Gao , Ming Liao , Ling Fang , Li-Yun Jiang , Hui Li , Fang Chen , Biao Di , Li-Juan He , Jin-Yan Lin , Suxiang Tong , Xiangang Kong , Lin Du , Pei Hao , Hua Tang , Andrea Bernini , Xiao-Jing Yu , Ottavia Spiga , Zong-Ming Guo , Hai-Yan Pan , Wei-Zhong He , Jean-Claude Manuguerra (2) , Arnaud Fontanet (2) , Antoine Danchin (2) , Neri Niccolai , Yi-Xue Li , Chung-I Wu , Guo-Ping Zhao

1 State Key Laboratory of Virology
2 IP - Institut Pasteur [Paris]

The genomic sequences of severe acute respiratory syndrome coronaviruses from human and palm civet of the 2003/2004 outbreak in the city of Guangzhou, China, were nearly identical. Phylogenetic analysis suggested an independent viral invasion from animal to human in this new episode. Combining all existing data but excluding singletons, we identified 202 single-nucleotide variations. Among them, 17 are polymorphic in palm civets only. The ratio of nonsynonymous/synonymous nucleotide substitution in palm civets collected 1 yr apart from different geographic locations is very high, suggesting a rapid evolving process of viral proteins in civet as well, much like their adaptation in the human host in the early 2002–2003 epidemic. Major genetic variations in some critical genes, particularly the Spike gene, seemed essential for the transition from animal-to-human transmission to human-to-human transmission, which eventually caused the first severe acute respiratory syndrome outbreak of 2002/2003.

Domaines: Sciences du Vivant [q-bio]

Huai-Dong Song, Chang-Chun Tu, Guo-Wei Zhang, Sheng-Yue Wang, Kui Zheng, et al.. Cross-host evolution of severe acute respiratory syndrome coronavirus in palm civet and human. Proceedings of the National Academy of Sciences of the United States of America, 2005, 102 (7), pp.2430-2435. ⟨10.1073/pnas.0409608102⟩. ⟨pasteur-03915126⟩