RT Journal Article SR Electronic T1 Systematic analysis of human antibody response to ebolavirus glycoprotein reveals high prevalence of neutralizing public clonotypes JF bioRxiv FD Cold Spring Harbor Laboratory SP 2022.01.12.476089 DO 10.1101/2022.01.12.476089 A1 Elaine C. Chen A1 Pavlo Gilchuk A1 Seth J. Zost A1 Philipp A. Ilinykh A1 Elad Binshtein A1 Kai Huang A1 Luke Myers A1 Stefano Bonissone A1 Samuel Day A1 Chandrahaas R. Kona A1 Andrew Trivette A1 Joseph X. Reidy A1 Rachel E. Sutton A1 Christopher Gainza A1 Summer Monroig A1 Edgar Davidson A1 Erica Ollmann Saphire A1 Benjamin J. Doranz A1 Natalie Castellana A1 Alexander Bukreyev A1 Robert H. Carnahan A1 James E. Crowe, Jr YR 2022 UL http://biorxiv.org/content/early/2022/01/13/2022.01.12.476089.abstract AB Understanding the human antibody response to emerging viral pathogens is key to epidemic preparedness. As the size of the B cell response to a pathogenic virus protective antigen is undefined, we performed deep paired heavy and light chain sequencing in EBOV-GP specific memory B cells, allowing analysis of the ebolavirus-specific antibody repertoire both genetically and functionally. This approach facilitated investigation of the molecular and genetic basis for evolution of cross-reactive antibodies by elucidating germline-encoded properties of antibodies to EBOV and identification of the overlap between antibodies in the memory B-cell and serum repertoire. We identified 73 public clonotypes to EBOV, 20% of which encoded antibodies with neutralization activity and capacity to protect in vivo. This comprehensive analysis of the public and private antibody repertoire provides insight into the molecular basis of the humoral immune response to EBOV-GP, which informs vaccine design of new vaccines and improved therapeutics.Competing Interest StatementE.D. and B.J.D. are employees of Integral Molecular, and B.J.D.is a shareholder in that company. J.E.C. has served as a consultant for Eli Lilly, GlaxoSmithKline and Luna Biologics, is a member of the Scientific Advisory Board of Meissa Vaccines and is Founder of IDBiologics. The Crowe laboratory has received funding support in sponsored research agreements from AstraZeneca, IDBiologics, and Takeda. All other authors declare no competing interests.