National Institutes of Health/National Center for Advancing Translational Sciences (NIH/NCATS)
U19 AI142764
United States
Citation
Journal: Cell Rep / Year: 2021 Title: Cooperativity mediated by rationally selected combinations of human monoclonal antibodies targeting the henipavirus receptor binding protein. Authors: Michael P Doyle / Nurgun Kose / Viktoriya Borisevich / Elad Binshtein / Moushimi Amaya / Marcus Nagel / Edward J Annand / Erica Armstrong / Robin Bombardi / Jinhui Dong / Kevin L Schey / ...Authors: Michael P Doyle / Nurgun Kose / Viktoriya Borisevich / Elad Binshtein / Moushimi Amaya / Marcus Nagel / Edward J Annand / Erica Armstrong / Robin Bombardi / Jinhui Dong / Kevin L Schey / Christopher C Broder / Larry Zeitlin / Erin A Kuang / Zachary A Bornholdt / Brandyn R West / Thomas W Geisbert / Robert W Cross / James E Crowe / Abstract: Hendra virus and Nipah virus (NiV), members of the Henipavirus (HNV) genus, are zoonotic paramyxoviruses known to cause severe disease across six mammalian orders, including humans. We isolated a ...Hendra virus and Nipah virus (NiV), members of the Henipavirus (HNV) genus, are zoonotic paramyxoviruses known to cause severe disease across six mammalian orders, including humans. We isolated a panel of human monoclonal antibodies (mAbs) from the B cells of an individual with prior exposure to equine Hendra virus (HeV) vaccine, targeting distinct antigenic sites. The most potent class of cross-reactive antibodies achieves neutralization by blocking viral attachment to the host cell receptors ephrin-B2 and ephrin-B3, with a second class being enhanced by receptor binding. mAbs from both classes display synergistic activity in vitro. In a stringent hamster model of NiV Bangladesh (NiV) infection, antibodies from both classes reduce morbidity and mortality and achieve synergistic protection in combination. These candidate mAbs might be suitable for use in a cocktail therapeutic approach to achieve synergistic potency and reduce the risk of virus escape.
History
Deposition
Feb 15, 2021
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Header (metadata) release
Jan 12, 2022
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Map release
Jan 12, 2022
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Update
Jan 12, 2022
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Current status
Jan 12, 2022
Processing site: RCSB / Status: Released
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Structure visualization
Movie
Surface view with section colored by density value
Name: HeV RBP with 2 Fabs / type: complex / ID: 1 / Parent: 0
Source (natural)
Organism: Hendra henipavirus
Recombinant expression
Organism: Homo sapiens (human)
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Experimental details
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Structure determination
Method
negative staining
Processing
single particle reconstruction
Aggregation state
particle
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Sample preparation
Buffer
pH: 7.5
Staining
Type: NEGATIVE / Material: Uranyl Formate
Grid
Model: Homemade / Support film - Material: CARBON / Pretreatment - Type: GLOW DISCHARGE
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Electron microscopy
Microscope
FEI TECNAI F20
Image recording
Film or detector model: GATAN ULTRASCAN 4000 (4k x 4k) / Number grids imaged: 1 / Number real images: 377 / Average exposure time: 1.0 sec. / Average electron dose: 35.0 e/Å2
Electron beam
Acceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
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