4.7 Review

Emerging technologies for engineering of extracellular vesicles

Journal

Publisher

FRONTIERS MEDIA SA
DOI: 10.3389/fbioe.2023.1298746

Keywords

extracellular vesicle; engineering strategy; pre-treatment; parent cell; direct modification

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Extracellular vesicles (EVs) are secreted vesicles that carry biological information and have been studied for diagnostic and therapeutic applications. However, natural EVs have limitations that can be improved through engineering techniques. This review provides an overview of advanced strategies for EV engineering, including pre-treatment of parent cells and direct modification of EVs.
Extracellular vesicles (EVs) are lipid-bilayer membrane-enclosed vesicles that are secreted by all cell types. Natural EVs contain biological information such as proteins, nucleic acids, and lipids from their parent cells. Therefore, EVs have been extensively studied as diagnostic biomarkers and therapeutic tools under normal and pathological conditions. However, some drawbacks, including low yield, poor therapeutic effects, lack of imaging, and targeting capacity of natural EVs, still need to be improved. Emerging engineering technologies have rendered EVs new properties or functionalities that broadened their applications in the biomedical field. Herein, in this review, we gave a brief overview of advanced strategies for EV engineering. We focused on pre-treatment of parent cells to regulate their released EVs. Meanwhile, we summarized and discussed the direct modification of EVs to achieve drug loading, imaging, and targeting functionalities for downstream applications.

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