National Health and Medical Research Council (Australia)
APP1164216
Australia
National Health and Medical Research Council (Australia)
APP1138611
Australia
Citation
Journal: Sci Transl Med / Year: 2019 Title: A recombinant platform for flavivirus vaccines and diagnostics using chimeras of a new insect-specific virus. Authors: Jody Hobson-Peters / Jessica J Harrison / Daniel Watterson / Jessamine E Hazlewood / Laura J Vet / Natalee D Newton / David Warrilow / Agathe M G Colmant / Carmel Taylor / Bixing Huang / ...Authors: Jody Hobson-Peters / Jessica J Harrison / Daniel Watterson / Jessamine E Hazlewood / Laura J Vet / Natalee D Newton / David Warrilow / Agathe M G Colmant / Carmel Taylor / Bixing Huang / Thisun B H Piyasena / Weng Kong Chow / Yin Xiang Setoh / Bing Tang / Eri Nakayama / Kexin Yan / Alberto A Amarilla / Sarah Wheatley / Peter R Moore / Mitchell Finger / Nina Kurucz / Naphak Modhiran / Paul R Young / Alexander A Khromykh / Helle Bielefeldt-Ohmann / Andreas Suhrbier / Roy A Hall / Abstract: Flaviviruses such as dengue, yellow fever, Zika, West Nile, and Japanese encephalitis virus present substantial global health burdens. New vaccines are being sought to address safety and ...Flaviviruses such as dengue, yellow fever, Zika, West Nile, and Japanese encephalitis virus present substantial global health burdens. New vaccines are being sought to address safety and manufacturing issues associated with current live attenuated vaccines. Here, we describe a new insect-specific flavivirus, Binjari virus, which was found to be remarkably tolerant for exchange of its structural protein genes (prME) with those of the aforementioned pathogenic vertebrate-infecting flaviviruses (VIFs). Chimeric BinJ/VIF-prME viruses remained replication defective in vertebrate cells but replicated with high efficiency in mosquito cells. Cryo-electron microscopy and monoclonal antibody binding studies illustrated that the chimeric BinJ/VIF-prME virus particles were structurally and immunologically similar to their parental VIFs. Pilot manufacturing in C6/36 cells suggests that high yields can be reached up to 10 cell culture infectious dose/ml or ≈7 mg/liter. BinJ/VIF-prME viruses showed utility in diagnostic (microsphere immunoassays and ELISAs using panels of human and equine sera) and vaccine applications (illustrating protection against Zika virus challenge in murine IFNAR mouse models). BinJ/VIF-prME viruses thus represent a versatile, noninfectious (for vertebrate cells), high-yield technology for generating chimeric flavivirus particles with low biocontainment requirements.
History
Deposition
Jul 7, 2019
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Header (metadata) release
Jan 8, 2020
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Map release
Jan 8, 2020
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Update
Jan 8, 2020
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Current status
Jan 8, 2020
Processing site: RCSB / Status: Released
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Structure visualization
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Surface view with section colored by density value
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