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Area of Science:

  • Biotechnology and Nanomedicine
  • Cellular and Molecular Biology
  • Drug Delivery Systems

Background:

  • Extracellular vesicles (EVs) are natural biomolecular carriers vital for intercellular communication and tissue homeostasis.
  • EVs exhibit pro-regenerative and immune-modulating properties, leading to their investigation in clinical trials for myocardial infarction and autoimmune diseases.
  • Their inherent advantages, including bioavailability and barrier traversal, position EVs as a promising platform for targeted drug delivery.

Purpose of the Study:

  • To review methods for improving extracellular vesicle (EV) isolation and purification.
  • To discuss strategies for enhancing cargo packaging within EVs, including proteins, RNAs, and small-molecule drugs.
  • To explore technologies for displaying targeting ligands on EV surfaces for improved therapeutic targeting.

Main Methods:

  • Review of current literature on EV isolation and purification techniques.
  • Analysis of methods for loading therapeutic payloads into EVs.
  • Examination of surface modification strategies for EV targeting.

Main Results:

  • Current methods for EV isolation and purification can be optimized for therapeutic applications.
  • Various approaches exist to enhance the encapsulation efficiency of diverse therapeutic agents within EVs.
  • Surface engineering of EVs with targeting ligands can significantly improve their accumulation at target sites.

Conclusions:

  • Overcoming challenges in EV production and targeting is crucial for advancing EV-based therapeutics.
  • Optimized EV isolation, enhanced cargo loading, and targeted delivery are key to developing novel therapeutic classes.
  • This review provides a guide for developing next-generation EV-based therapies and addressing existing technological hurdles.