Neutralizing antibodies protect mice against Venezuelan equine encephalitis virus aerosol challenge.
Neutralizing antibodies protect mice against Venezuelan equine encephalitis virus aerosol challenge.
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DOI:
10.1084/jem.20212532
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发表时间:
2022-04-04
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影响因子:
--
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Kafai et al. describe neutralizing murine and human mAbs targeting the Venezuelan equine encephalitis virus E2 glycoprotein that protect mice against lethal aerosol virus challenge. These mAbs exhibit distinct epitope specificity and block multiple steps in the virus replication cycle. Venezuelan equine encephalitis virus (VEEV) remains a risk for epidemic emergence or use as an aerosolized bioweapon. To develop possible countermeasures, we isolated VEEV-specific neutralizing monoclonal antibodies (mAbs) from mice and a human immunized with attenuated VEEV strains. Functional assays and epitope mapping established that potently inhibitory anti-VEEV mAbs bind distinct antigenic sites in the A or B domains of the E2 glycoprotein and block multiple steps in the viral replication cycle including attachment, fusion, and egress. A 3.2-Å cryo-electron microscopy reconstruction of VEEV virus-like particles bound by a human Fab suggests that antibody engagement of the B domain may result in cross-linking of neighboring spikes to prevent conformational requirements for viral fusion. Prophylaxis or postexposure therapy with these mAbs protected mice against lethal aerosol challenge with VEEV. Our study defines functional and structural mechanisms of mAb protection and suggests that multiple antigenic determinants on VEEV can be targeted for vaccine or antibody-based therapeutic development.
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影响因子:
64.8
作者:
Basore K;Ma H;Kafai NM;Mackin S;Kim AS;Nelson CA;Diamond MS;Fremont DH
通讯作者:
Fremont DH
DOI:
10.1126/science.aaa8651
发表时间:
2015-07-03
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Fibriansah G;Ibarra KD;Ng TS;Smith SA;Tan JL;Lim XN;Ooi JS;Kostyuchenko VA;Wang J;de Silva AM;Harris E;Crowe JE Jr;Lok SM
通讯作者:
Lok SM
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
DOI:
10.1128/aem.25.5.755-762.1973
发表时间:
1973-01-01
期刊:
APPLIED MICROBIOLOGY
影响因子:
--
作者:
CASALS, J;BUCKLEY, SM;BARRY, DW
通讯作者:
BARRY, DW
影响因子:
1.2
作者:
Cingolani, Pablo;Platts, Adrian;Ruden, Douglas M.
通讯作者:
Ruden, Douglas M.