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Published on: September 13, 2018
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Host Membranes as Drivers of Virus Evolution.
Mélanie Matveeva1, Marine Lefebvre1, Henri Chahinian1
1Department of Biology, Faculty of Medicine, University of Aix-Marseille, INSERM UMR_S 1072, 13015 Marseille, France.
Viruses
|September 28, 2023
Summary
Host cell membranes, particularly lipid rafts, actively guide virus evolution. Viruses must adapt their cationic properties and spike proteins to bind gangliosides, driving perpetual viral evolution and antiviral development.
Area of Science:
- Virology
- Molecular Biology
- Biophysics
Background:
- Viral adaptation mechanisms are poorly understood.
- Lipid rafts are typically viewed as passive entry points for viruses.
- The role of host membranes in directing viral evolution requires clarification.
Purpose of the Study:
- To investigate the active role of host cell lipid rafts in controlling viral evolution.
- To elucidate the molecular mechanisms by which lipid rafts influence viral adaptation.
- To explore the potential for targeting raft-virus interactions for antiviral strategies.
Main Methods:
- Analysis of electrostatic interactions between viral particles and ganglioside-rich lipid rafts.
- Investigation of hydrogen bonding networks critical for virus-raft stabilization.
- Examination of induced-fit mechanisms in virus-ganglioside binding.
Main Results:
- Lipid rafts act as selective gateways, favoring viruses with higher cationic surface areas.
- Electrostatic forces initiate viral attraction, but hydrogen bonding dictates stable interactions.
- Gangliosides actively engage viral spikes via an induced-fit mechanism, stabilizing binding.
Conclusions:
- Host lipid rafts provide active informational guidelines, not passive gateways, for viral evolution.
- Viruses continuously evolve to optimize electrostatic potential and spike-ganglioside interactions.
- Understanding these host-driven mechanisms may lead to novel antiviral therapies.
Keywords:
HIV-1Monkeypox virusSARS-CoV-2cholesterolelectrostatic potentialevolutiongangliosideshydrogen bondlipid raftsmutationsMore Related Videos
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