Human antibody recognizing a quaternary epitope in the Puumala virus glycoprotein provides broad protection against orthohantaviruses

Eva Mittler, Anna Z. Wec, Janne Tynell, Pablo Guardado-Calvo, Julia Wigren-Byström, Laura C. Polanco, Cecilia M. O'Brien, Megan M. Slough, Dafna M. Abelson, Alexandra Serris, Mrunal Sakharkar, Gerard Pehau-Arnaudet, Russell R. Bakken, James C. Geoghegan, Rohit Jangra, Markus Keller, Larry Zeitlin, Olli Vapalahti, Rainer G. Ulrich, Zachary A. BornholdtClas Ahlm, Felix A. Rey, John M. Dye, Steven B. Bradfute, Tomas Strandin, Andrew S. Herbert, Mattias N.E. Forsell, Laura M. Walker, Kartik Chandran

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


The rodent-borne hantavirus Puumala virus (PUUV) and related agents cause hemorrhagic fever with renal syndrome (HFRS) in humans. Other hantaviruses, including Andes virus (ANDV) and Sin Nombre virus, cause a distinct zoonotic disease, hantavirus cardiopulmonary syndrome (HCPS). Although these infections are severe and have substantial case fatality rates, no FDA-approved hantavirus countermeasures are available. Recent work suggests that monoclonal antibodies may have therapeutic utility. We describe here the isolation of human neutralizing antibodies (nAbs) against tetrameric Gn/Gc glycoprotein spikes from PUUV-experienced donors. We define a dominant class of nAbs recognizing the "capping loop"of Gn that masks the hydrophobic fusion loops in Gc. A subset of nAbs in this class, including ADI-42898, bound Gn/Gc complexes but not Gn alone, strongly suggesting that they recognize a quaternary epitope encompassing both Gn and Gc. ADI-42898 blocked the cell entry of seven HCPS- and HFRS-associated hantaviruses, and single doses of this nAb could protect Syrian hamsters and bank voles challenged with the highly virulent HCPS-causing ANDV and HFRS-causing PUUV, respectively. ADI-42898 is a promising candidate for clinical development as a countermeasure for both HCPS and HFRS, and its mode of Gn/Gc recognition informs the development of broadly protective hantavirus vaccines.

Original languageEnglish (US)
Article numberabl5399
JournalScience translational medicine
Issue number636
StatePublished - Mar 16 2022

ASJC Scopus subject areas

  • Medicine(all)


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