Antibody therapy for Lassa fever

Robert Cross, Kathryn M. Hastie, Chad Mire, James E. Robinson, Thomas Geisbert, Luis M. Branco, E. Ollmann Saphire, Robert F. Garry

Research output: Contribution to journalReview article

Abstract

Serum from convalescent Lassa fever patients was previously shown to be ineffective as a source of protective antibodies in some early studies. Subsequently, monoclonal antibodies (MAbs) to the Lassa virus (LASV) glycoprotein produced by memory B cells of West African patients who survived Lassa fever were identified. Development of MAbs as potential Lassa immunotherapeutics was facilitated by structural studies and mutational analyses that identified protective epitopes on the prefusion form of the LASV glycoprotein. Human mAbs were screened for reactivity to different neutralizing epitopes, potency, and broad reactivity against multiple lineages of LASV. MAbs were downselected in a guinea pig model of Lassa fever. A cocktail of three human MAbs designated Arevirumab-3 rescued 100% of Cynomolgus macaques at advanced stages of disease more than a week post-infection. Antibody therapeutics may be further developed in clinical trials in endemic areas potentially offering a key treatment option for Lassa fever.

Original languageEnglish (US)
Pages (from-to)97-104
Number of pages8
JournalCurrent Opinion in Virology
Volume37
DOIs
StatePublished - Aug 1 2019

ASJC Scopus subject areas

  • Virology

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    Cross, R., Hastie, K. M., Mire, C., Robinson, J. E., Geisbert, T., Branco, L. M., Ollmann Saphire, E., & Garry, R. F. (2019). Antibody therapy for Lassa fever. Current Opinion in Virology, 37, 97-104. https://doi.org/10.1016/j.coviro.2019.07.003