Research Data Leeds Repository
Inhibitors of the Small Membrane (M) Protein Viroporin Prevent Zika Virus Infection - dataset
Citation
Brown, Emma and Kalli, Antreas and Griffin, Stephen (2024) Inhibitors of the Small Membrane (M) Protein Viroporin Prevent Zika Virus Infection - dataset. University of Leeds. [Dataset] https://doi.org/10.5518/1505
Dataset description
Flaviviruses, including Zika virus (ZIKV), are a significant global health concern, yet no licensed antivirals exist to treat disease. The small Membrane (M) protein plays well-defined roles during viral egress and remains within virion membranes following release and maturation. However, it is unclear whether M plays a functional role in this setting. Here, we show that M forms oligomeric membrane-permeabilising channels in vitro, with increased activity at acidic pH and sensitivity to the prototypic channel-blocker, rimantadine. Accordingly, rimantadine blocked an early stage of ZIKV cell culture infection. Structure-based channel models, comprising hexameric arrangements of two trans-membrane domain protomers were shown to comprise more stable assemblages than other oligomers using molecular dynamics (MD) simulations. Models contained a predicted lumenal rimantadine binding site, as well as a second druggable target region on the membrane-exposed periphery. In silico screening enriched for repurposed drugs/compounds predicted to bind to either one site or the other. Hits displayed superior potency in vitro and in cell culture compared with rimantadine, with efficacy demonstrably linked to virion-resident channels. Finally, rimantadine effectively blocked ZIKV viraemia in preclinical models, supporting that M constitutes a physiologically relevant target. This could be explored by repurposing rimantadine, or development of new M-targeted-therapies.
Keywords: | Zika virus, ion channel, M protein | ||||||
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Subjects: | C000 - Biological sciences > C700 - Molecular biology, biophysics & biochemistry | ||||||
Divisions: | Faculty of Medicine and Health > School of Medicine | ||||||
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License: | Creative Commons Attribution 4.0 International (CC BY 4.0) | ||||||
Date deposited: | 30 Sep 2024 20:05 | ||||||
URI: | https://archive.researchdata.leeds.ac.uk/id/eprint/1325 | ||||||