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- W4382243338 abstract "Intracellular targeting is essential for the efficient delivery of drugs and nanotherapeutics. Transporting nanomaterials into cells' cytoplasm for therapeutic purposes can be challenging due to the endosomal trap and lysosomal degradation of cargo. To overcome this issue, we utilized chemical synthesis to design a functional carrier that can escape the endosome and deliver biological materials into the cytoplasm. We synthesized a thiol-sensitive maleimide linker that connects the well-known mitochondria targeting lipophilic triphenylphosphonium cation (TPP) to the surface of a proteinaceous nanoparticle based on the engineered virus-like particle (VLP) Qβ. TPP facilitates endosomal escape by its lipophilic and cationic nature, which disrupts the endosomal membrane. Once in the cytosol, glutathione reacts with the thiol-sensitive maleimide linkers, severs the TPP from the nanoparticle, halting its trafficking to the mitochondria, and marooning it in the cytosol. We successfully demonstrated cytosolic delivery of a VLP loaded with Green Fluorescent Protein (GFP) in vitro and small-ultrared fluorescent protein (smURFP) in vivo, where evenly distributed fluorescence is observed in A549 human lung adenocarcinoma cells and the epithelial cells of BALB/c mice lungs. As a proof of concept, we encapsulated luciferase-targeted siRNA (siLuc) inside the VLP decorated with the maleimide-TPP (M-TPP) linker. We observed enhanced luminescence silencing in luciferase-expressing HeLa cells using our sheddable TPP linker compared to control VLPs." @default.
- W4382243338 created "2023-06-28" @default.
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- W4382243338 date "2023-01-01" @default.
- W4382243338 modified "2023-09-27" @default.
- W4382243338 title "Intracellular Delivery of Virus-Like Particles Using a Sheddable Linker" @default.
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- W4382243338 doi "https://doi.org/10.1039/d3tb00696d" @default.
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