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- W3136352959 abstract "In this study, we developed a mesoporous silica nanoparticles - mRNA (MSN-mRNA) subcutaneous delivery system composed of naked mRNA and a subcutaneous depot of imidazolo-oxindole RNA-activated protein kinase (PKR) inhibitor C16. We show that C16 treatment during mRNA transfection is a potent immune evasion approach that non-linearly enhances translation of unmodified mRNA in both mouse fibroblasts and dendritic cells in vitro exceeding that of nucleoside-modified mRNA. Notably, C16 further enhances translation of nucleoside-modified mRNA and HPLC purified mRNA. However, translation enhancement is dependent on and potentiated by C16′s continuous presence. C16 mediated translation enhancement is extended in vivo by employing MSN as an interface to sustain-release C16. Subcutaneously administered MSN-mRNA significantly enhanced in vivo translation and expression kinetics of naked mRNA in unmodified, nucleoside-modified, and HPLC purified formats. We applied a MSN-mRNA vaccine formulation composed of naked mRNA encoding ovalbumin and granulocyte macrophage colony stimulating factor, and C16@MSNs on a xenograft E.G7-OVA prophylactic tumor model, resulting in very potent tumor inhibition. The MSN-mRNA delivery system bears great translational potential in mRNA therapeutics." @default.
- W3136352959 created "2021-03-29" @default.
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- W3136352959 date "2021-06-01" @default.
- W3136352959 modified "2023-10-18" @default.
- W3136352959 title "Sustained release of PKR inhibitor C16 from mesoporous silica nanoparticles significantly enhances mRNA translation and anti-tumor vaccination" @default.
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- W3136352959 doi "https://doi.org/10.1016/j.ejpb.2021.03.011" @default.
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