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Stettler, Karin; Beltramello, Martina; Espinosa, Diego A.; Graham, Victoria; Cassotta, Antonino; Bianchi, Siro; Vanzetta, Fabrizia; Minola, Andrea; Jaconi, Stefano; Mele, Federico; Foglierini, Mathilde; Pedotti, Mattia; Simonelli, Luca; Dowall, Stuart; Atkinson, Barry; Percivalle, Elena; Simmons, Cameron P.; Varani, Luca; Blum, Johannes; Baldanti, Fausto; Cameroni, Elisabetta; Hewson, Roger; Harris, Eva; Lanzavecchia, Antonio; Sallusto, Federica; Corti, Davide
Science (American Association for the Advancement of Science), 08/2016, Letnik: 353, Številka: 6301Journal Article
Zika virus (ZIKV), a mosquito-borne flavivirus with homology to Dengue virus (DENV), has become a public health emergency. By characterizing memory lymphocytes from ZIKV-infected patients, we dissected ZIKV-specific and DENV-cross-reactive immune responses. Antibodies to nonstructural protein 1 (NS1) were largely ZIKV-specific and were used to develop a serological diagnostic tool. In contrast, antibodies against E protein domain l/ll (EDI/II) were cross-reactive and, although poorly neutralizing, potently enhanced ZIKV and DENV infection in vitro and lethally enhanced DENV disease in mice. Memory T cells against NS1 or E proteins were poorly cross-reactive, even in donors preexposed to DENV. The most potent neutralizing antibodies were ZIKV-specific and targeted EDIII or quaternary epitopes on infectious virus. An EDIII-specific antibody protected mice from lethal ZIKV infection, illustrating the potential for antibody-based therapy.
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Vir: Osebne bibliografije
in: SICRIS
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