Unpacking extracellular vesicles: RNA cargo loading and function

Abstract

Extracellular vesicles (EVs) are a heterogeneous group of membrane‐enclosed structures produced by prokaryotic and eukaryotic cells. EVs carry a range of biological cargoes, including RNA, protein, and lipids, which may have both metabolic significance and signalling potential. EV release has been suggested to play a critical role in maintaining intracellular homeostasis by eliminating unnecessary biological material from EV producing cells, and as a delivery system to enable cellular communication between both neighbouring and distant cells without physical contact. In this review, we give an overview of what is known about the relative enrichment of the different types of RNA that have been associated with EVs in the most recent research efforts. We then examine the selective and non‐selective incorporation of these different RNA biotypes into EVs, the molecular systems of RNA sorting into EVs that have been elucidated so far, and the role of this process in EV‐producing cells. Finally, we also discuss the model systems providing evidence for EV‐mediated delivery of RNA to recipient cells, and the implications of this evidence for the relevance of this RNA delivery process in both physiological and pathological scenarios.

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Cited by papers we hold 1

• Extracellular vesicles, RNA sequencing, and bioinformatic analyses: Challenges, solutions, and recommendations · 2024
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