A conserved glutathione binding site in poliovirus is a target for antivirals and vaccine stabilisation.
A conserved glutathione binding site in poliovirus is a target for antivirals and vaccine stabilisation.
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DOI:
10.1038/s42003-022-04252-5
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发表时间:
2022-11-25
影响因子:
5.9
通讯作者:
中科院分区:
文献类型:
--
作者:
Strategies to prevent the recurrence of poliovirus (PV) after eradication may utilise non-infectious, recombinant virus-like particle (VLP) vaccines. Despite clear advantages over inactivated or attenuated virus vaccines, instability of VLPs can compromise their immunogenicity. Glutathione (GSH), an important cellular reducing agent, is a crucial co-factor for the morphogenesis of enteroviruses, including PV. We report cryo-EM structures of GSH bound to PV serotype 3 VLPs showing that it can enhance particle stability. GSH binds the positively charged pocket at the interprotomer interface shown recently to bind GSH in enterovirus F3 and putative antiviral benzene sulphonamide compounds in other enteroviruses. We show, using high-resolution cryo-EM, the binding of a benzene sulphonamide compound with a PV serotype 2 VLP, consistent with antiviral activity through over-stabilizing the interprotomer pocket, preventing the capsid rearrangements necessary for viral infection. Collectively, these results suggest GSH or an analogous tight-binding antiviral offers the potential for stabilizing VLP vaccines. Cryo-EM structures reveal the role of glutathione (GSH) in poliovirus (PV) serotype 3 virus-like particle (VLP) stability, suggesting GSH or an analogous tight-binding antiviral offers potential for stabilizing VLP vaccines against PV.
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影响因子:
48
作者:
Barad BA;Echols N;Wang RY;Cheng Y;DiMaio F;Adams PD;Fraser JS
通讯作者:
Fraser JS
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HOGLE, JM
影响因子:
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FOX, MP;OTTO, MJ;MCKINLAY, MA
通讯作者:
MCKINLAY, MA
影响因子:
3.8
作者:
FERGUSON, M;WOOD, DJ;MINOR, PD
通讯作者:
MINOR, PD