title: Rapid profiling of RSV antibody repertoires from the memory B cells of naturally infected adult donors.
abstract: Respiratory syncytial virus (RSV) causes substantial morbidity and mortality in young children and the elderly. There are currently no licensed RSV vaccines, and passive prophylaxis with the monoclonal antibody palivizumab is restricted to high-risk infants in part due to its modest efficacy. Although it is widely agreed that an effective RSV vaccine will require the induction of a potent neutralizing antibody response against the RSV fusion (F) glycoprotein, little is known about the specificities and functional activities of RSV F-specific antibodies induced by natural infection. Here, we have comprehensively profiled the human antibody response to RSV F by isolating and characterizing 364 RSV F-specific monoclonal antibodies from the memory B cells of three healthy adult donors. In all donors, the antibody response to RSV F is comprised of a broad diversity of clones that target several antigenic sites. Nearly half of the most potent antibodies target a previously undefined site of vulnerability near the apex of the prefusion conformation of RSV F (preF), providing strong support for the development of RSV vaccine candidates that preserve the membrane-distal hemisphere of the preF protein. Additionally, the antibodies targeting this new site display convergent sequence features, thus providing a future means to rapidly detect the presence of these antibodies in human vaccine samples. Many of the antibodies that bind preF-specific surfaces are over 100 times more potent than palivizumab, and several cross-neutralize human metapneumovirus (HMPV). Taken together, the results have implications for the design and evaluation of RSV vaccine candidates and offer new options for passive prophylaxis.
authors.affiliation: Department of Biochemistry and Cell Biology, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA.
authors.forename: Morgan S A
authors.initials: MS
authors.lastname: Gilman
authors.affiliation: Adimab LLC, Lebanon, NH 03766, USA.
authors.forename: Carlos A
authors.initials: CA
authors.lastname: Castellanos
authors.affiliation: Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
authors.forename: Man
authors.initials: M
authors.lastname: Chen
authors.affiliation: Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
authors.forename: Joan O
authors.initials: JO
authors.lastname: Ngwuta
authors.affiliation: Adimab LLC, Lebanon, NH 03766, USA.
authors.forename: Eileen
authors.initials: E
authors.lastname: Goodwin
authors.affiliation: Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
authors.forename: Syed M
authors.initials: SM
authors.lastname: Moin
authors.affiliation: Centro Nacional de Microbiología and CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain.
authors.forename: Vicente
authors.initials: V
authors.lastname: Mas
authors.affiliation: Centro Nacional de Microbiología and CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain.
authors.forename: José A
authors.initials: JA
authors.lastname: Melero
authors.affiliation: Department of Pediatrics, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA.
authors.forename: Peter F
authors.initials: PF
authors.lastname: Wright
authors.affiliation: Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
authors.forename: Barney S
authors.initials: BS
authors.lastname: Graham
authors.affiliation: Department of Biochemistry and Cell Biology, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA.
authors.forename: Jason S
authors.initials: JS
authors.lastname: McLellan
authors.affiliation: Adimab LLC, Lebanon, NH 03766, USA.
authors.forename: Laura M
authors.initials: LM
authors.lastname: Walker