An ACE2 decamer viral trap as a durable intervention solution for current and future SARS-CoV

The capacity of SARS-CoV-2 to evolve poses challenges to conventional prevention and treatment options such as vaccination and monoclonal antibodies, as they rely on viral receptor binding domain (RBD) sequences from previous strains. Additionally, animal CoVs, especially those of the SARS family, a...

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Published in:	Emerging microbes & infections Vol. 12; no. 2; p. 2275598
Main Authors:	Guo, Hailong, Cho, Bomsoo, Hinton, Paul R, He, Sijia, Yu, Yongjun, Ramesh, Ashwin Kumar, Sivaccumar, Jwala Priyadarsini, Ku, Zhiqiang, Campo, Kristen, Holland, Sarah, Sachdeva, Sameer, Mensch, Christopher, Dawod, Mohamed, Whitaker, Annalis, Eisenhauer, Philip, Falcone, Allison, Honce, Rebekah, Botten, Jason W, Carroll, Stephen F, Keyt, Bruce A, Womack, Andrew W, Strohl, William R, Xu, Kai, Zhang, Ningyan, An, Zhiqiang, Ha, Sha, Shiver, John W, Fu, Tong-Ming
Format:	Journal Article
Language:	English
Published:	United States Taylor & Francis Ltd 01-12-2023 Taylor & Francis Group
Subjects:	ACE2 viral trap inhalation neutralization Pandemics SARS-CoV Severe acute respiratory syndrome coronavirus 2 viral challenge inhalation ACE2 viral trap viral challenge neutralization SARS-CoV
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Summary:	The capacity of SARS-CoV-2 to evolve poses challenges to conventional prevention and treatment options such as vaccination and monoclonal antibodies, as they rely on viral receptor binding domain (RBD) sequences from previous strains. Additionally, animal CoVs, especially those of the SARS family, are now appreciated as a constant pandemic threat. We present here a new antiviral approach featuring inhalation delivery of a recombinant viral trap composed of ten copies of angiotensin-converting enzyme 2 (ACE2) fused to the IgM Fc. This ACE2 decamer viral trap is designed to inhibit SARS-CoV-2 entry function, regardless of viral RBD sequence variations as shown by its high neutralization potency against all known SARS-CoV-2 variants, including Omicron BQ.1, BQ.1.1, XBB.1 and XBB.1.5. In addition, it demonstrates potency against SARS-CoV-1, human NL63, as well as bat and pangolin CoVs. The multivalent trap is effective in both prophylactic and therapeutic settings since a single intranasal dosing confers protection in human ACE2 transgenic mice against viral challenges. Lastly, this molecule is stable at ambient temperature for more than twelve weeks and can sustain physical stress from aerosolization. These results demonstrate the potential of a decameric ACE2 viral trap as an inhalation solution for ACE2-dependent coronaviruses of current and future pandemic concerns.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	2222-1751 2222-1751
DOI:	10.1080/22221751.2023.2275598