Acta Naturae | VOL. 13
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Targeting Extracellular Vesicles to Dendritic Cells and Macrophages

Publication Date Nov 15, 2021

Abstract

Targeting protein therapeutics to specific cells and tissues is a major challenge in modern medicine. Improving the specificity of protein therapeutic delivery will significantly enhance efficiency in drug development. One of the promising tools for protein delivery is extracellular vesicles (EVs) that are enveloped by a complex lipid bilayer. EVs are secreted by almost all cell types and possess significant advantages: biocompatibility, stability, and the ability to penetrate the bloodbrain barrier. Overexpression of the vesicular stomatitis virus protein G (VSV-G) was shown to promote EV formation by the producer cell. We have developed an EV-based system for targeted delivery of protein cargoes to antigen-presenting cells (APCs). In this study, we show that attachment of a recombinant llama nanobody -CD206 to the N-terminus of a truncated VSV-G increases the selectivity of EV cargo delivery mainly to APCs. These results highlight the outstanding technological and biomedical potential of EV-based delivery systems for correcting the immune response in patients with autoimmune, viral, and oncological diseases.

Concepts

Extracellular Vesicles Complex Lipid Bilayer Efficiency In Drug Development Immune Response In Patients Antigen-presenting Cells Oncological Diseases Producer Cell Modern Medicine Recombinant Nanobody Protein Therapeutic

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