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- W3025961473 abstract "Immunization with an inactivated virus is one of the strategies currently being tested towards developing a SARS-CoV-2 vaccine. One of the methods used to inactivate viruses is exposure to high doses of ionizing radiation to damage their nucleic acids. Although gamma-rays effectively induce lesions in the RNA, envelope proteins are also highly damaged in the process. This in turn may alter their antigenic properties, affecting their capacity to induce an adaptive immune response able to confer effective protection. Here, we modelled the impact of sparsely and densely ionizing radiation on SARS-CoV-2 using the Monte Carlo toolkit Geant4-DNA. With a realistic 3D target virus model, we calculated the expected number of lesions in the spike and membrane proteins, as well as in the viral RNA. We show that gamma-rays produce significant spike protein damage, but densely ionizing charged particles induce less membrane damage for the same level of RNA lesions, because a single ion traversal through the nuclear envelope is sufficient to inactivate the virus. We propose that accelerated charged particles produce inactivated viruses with little structural damage to envelope proteins, thereby representing a new and effective tool for developing vaccines against SARS-CoV-2 and other enveloped viruses." @default.
- W3025961473 created "2020-05-21" @default.
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- W3025961473 date "2021-01-07" @default.
- W3025961473 modified "2023-10-16" @default.
- W3025961473 title "Monte Carlo Simulation of SARS-CoV-2 Radiation-Induced Inactivation for Vaccine Development" @default.
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- W3025961473 doi "https://doi.org/10.1667/rade-20-00241.1" @default.
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