National Basic Research Program of China (973 Program)
2023YFC2605500
中国
引用
ジャーナル: Cell / 年: 2025 タイトル: Bat-infecting merbecovirus HKU5-CoV lineage 2 can use human ACE2 as a cell entry receptor. 著者: Jing Chen / Wei Zhang / Yang Li / Chen Liu / Tianyi Dong / Huiyu Chen / Chunguang Wu / Jia Su / Bei Li / Wei Zhang / Ben Hu / Jingkun Jia / Cheng-Bao Ma / Yan Zhu / Xiangyang He / Ang Li / ...著者: Jing Chen / Wei Zhang / Yang Li / Chen Liu / Tianyi Dong / Huiyu Chen / Chunguang Wu / Jia Su / Bei Li / Wei Zhang / Ben Hu / Jingkun Jia / Cheng-Bao Ma / Yan Zhu / Xiangyang He / Ang Li / Kaiyi Pan / Haofeng Lin / Zishuo Guo / Cong Li / Libiao Zhang / Huan Yan / Peng Zhou / Wei Peng / Zheng-Li Shi / 要旨: Merbecoviruses comprise four viral species with remarkable genetic diversity: MERS-related coronavirus, Tylonycteris bat coronavirus HKU4, Pipistrellus bat coronavirus HKU5, and Hedgehog coronavirus ...Merbecoviruses comprise four viral species with remarkable genetic diversity: MERS-related coronavirus, Tylonycteris bat coronavirus HKU4, Pipistrellus bat coronavirus HKU5, and Hedgehog coronavirus 1. However, the potential human spillover risk of animal merbecoviruses remains to be investigated. Here, we reported the discovery of HKU5-CoV lineage 2 (HKU5-CoV-2) in bats that efficiently utilize human angiotensin-converting enzyme 2 (ACE2) as a functional receptor and exhibits a broad host tropism. Cryo-EM analysis of HKU5-CoV-2 receptor-binding domain (RBD) and human ACE2 complex revealed an entirely distinct binding mode compared with other ACE2-utilizing merbecoviruses with RBD footprint largely shared with ACE2-using sarbecoviruses and NL63. Structural and functional analyses indicate that HKU5-CoV-2 has a better adaptation to human ACE2 than lineage 1 HKU5-CoV. Authentic HKU5-CoV-2 infected human ACE2-expressing cell lines and human respiratory and enteric organoids. This study reveals a distinct lineage of HKU5-CoVs in bats that efficiently use human ACE2 and underscores their potential zoonotic risk.