Deep mutational scanning reveals functional constraints and antigenic variability of Lassa virus glycoprotein complex.

Autor:	Carr CR; Basic Sciences Division and Computational Biology Program, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA.; Department of Genome Sciences, University of Washington, Seattle, WA 98109, USA.; Medical Scientist Training Program, University of Washington, Seattle, WA 98109, USA., Crawford KHD; Basic Sciences Division and Computational Biology Program, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA.; Department of Genome Sciences, University of Washington, Seattle, WA 98109, USA.; Medical Scientist Training Program, University of Washington, Seattle, WA 98109, USA., Murphy M; Department of Biochemistry, University of Washington, Seattle, WA 98195, USA.; Institute for Protein Design, University of Washington, Seattle, WA 98195, USA., Galloway JG; Basic Sciences Division and Computational Biology Program, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA., Haddox HK; Basic Sciences Division and Computational Biology Program, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA., Matsen FA 4th; Basic Sciences Division and Computational Biology Program, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA.; Department of Statistics, University of Washington, Seattle, WA 98195, USA.; Howard Hughes Medical Institute, Seattle, WA 98109, USA., Andersen KG; Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA 92037, USA.; Scripps Research Translational Institute, La Jolla, CA 92037, USA., King NP; Department of Biochemistry, University of Washington, Seattle, WA 98195, USA.; Institute for Protein Design, University of Washington, Seattle, WA 98195, USA., Bloom JD; Basic Sciences Division and Computational Biology Program, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA.; Department of Genome Sciences, University of Washington, Seattle, WA 98109, USA.; Howard Hughes Medical Institute, Seattle, WA 98109, USA.; Lead contact.
Jazyk:	angličtina
Zdroj:	BioRxiv : the preprint server for biology [bioRxiv] 2024 Feb 06. Date of Electronic Publication: 2024 Feb 06.
DOI:	10.1101/2024.02.05.579020
Abstrakt:	Lassa virus is estimated to cause thousands of human deaths per year, primarily due to spillovers from its natural host, Mastomys rodents. Efforts to create vaccines and antibody therapeutics must account for the evolutionary variability of Lassa virus's glycoprotein complex (GPC), which mediates viral entry into cells and is the target of neutralizing antibodies. To map the evolutionary space accessible to GPC, we use pseudovirus deep mutational scanning to measure how nearly all GPC amino-acid mutations affect cell entry and antibody neutralization. Our experiments define functional constraints throughout GPC. We quantify how GPC mutations affect neutralization by a panel of monoclonal antibodies and show that all antibodies are escaped by mutations that exist among natural Lassa virus lineages. Overall, our work describes a biosafety-level-2 method to elucidate the mutational space accessible to GPC and shows how prospective characterization of antigenic variation could aid design of therapeutics and vaccines. Competing Interests: Competing interests J.D.B. is on the scientific advisory boards of Apriori Bio, Invivyd, Aerium Therapeutics, and the Vaccine Company. K.G.A. is a consultant to, and on the scientific advisory board of, Invivyd. J.D.B. and K.H.D.C. receive royalty payments as inventors on Fred Hutch licensed patents related to viral deep mutational scanning. N.P.K. is a co-founder, shareholder, paid consultant, and chair of the scientific advisory board of Icosavax, Inc. The King lab has received unrelated sponsored research agreements from Pfizer and GSK.
Databáze:	MEDLINE
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