Small extracellular vesicles: the origins, current status, future prospects, and applications

Area of Science:

• Biotechnology
• Cell Biology
• Nanomedicine

Background:

• Small extracellular vesicles (sEVs) are nanoscale vesicles involved in intercellular communication.
• Their molecular cargo reflects cellular states, making them relevant for disease monitoring.
• sEVs possess inherent properties suitable for therapeutic applications.

Purpose of the Study:

• To classify extracellular vesicles, focusing on small extracellular vesicles (sEVs).
• To detail methods for sEV extraction and identification.
• To explore the roles of sEVs in cellular repair, disease diagnosis, and intercellular communication, including engineered modifications.

Main Methods:

• Literature review on extracellular vesicle classification.
• Analysis of techniques for small extracellular vesicle isolation and characterization.
• Review of studies on sEV functions and therapeutic modifications.

Main Results:

• sEVs are defined by their size (<200 nm) and origin from various cell types.
• Extraction and identification methods are critical for reliable sEV research.
• sEVs play significant roles in physiological processes, disease pathogenesis, and intercellular signaling.

Conclusions:

• sEVs are versatile nanocarriers with diagnostic and therapeutic potential.
• Understanding sEV biology and engineering is key to unlocking their clinical applications.
• Further research into sEV modification can enhance their efficacy as drug delivery agents and biomarkers.