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Protective monotherapy against lethal Ebola virus infection by a potently neutralizing antibody.

Corti, Davide; Misasi, John; Mulangu, Sabue; Stanley, Daphne A; Kanekiyo, Masaru; Wollen, Suzanne; Ploquin, Aurélie; Doria-Rose, Nicole A; Staupe, Ryan P; Bailey, Michael; Shi, Wei; Choe, Misook; Marcus, Hadar; Thompson, Emily A; Cagigi, Alberto; Silacci, Chiara; Fernandez-Rodriguez, Blanca; Perez, Laurent; Sallusto, Federica; Vanzetta, Fabrizia; Agatic, Gloria; Cameroni, Elisabetta; Kisalu, Neville; Gordon, Ingelise; Ledgerwood, Julie E; Mascola, John R; Graham, Barney S; Muyembe-Tamfun, Jean-Jacques; Trefry, John C; Lanzavecchia, Antonio; Sullivan, Nancy J.
Science; 351(6279): 1339-42, 2016 Mar 18.
Artigo em Inglês | MEDLINE | ID: mdl-26917593
Ebola virus disease in humans is highly lethal, with case fatality rates ranging from 25 to 90%. There is no licensed treatment or vaccine against the virus, underscoring the need for efficacious countermeasures. We ascertained that a human survivor of the 1995 Kikwit Ebola virus disease outbreak maintained circulating antibodies against the Ebola virus surface glycoprotein for more than a decade after infection. From this survivor we isolated monoclonal antibodies (mAbs) that neutralize recent and previous outbreak variants of Ebola virus and mediate antibody-dependent cell-mediated cytotoxicity in vitro. Strikingly, monotherapy with mAb114 protected macaques when given as late as 5 days after challenge. Treatment with a single human mAb suggests that a simplified therapeutic strategy for human Ebola infection may be possible.
Selo DaSilva