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Published on: February 28, 2025
Advanced small extracellular vesicles delivery systems for in situ tissue engineering.
Yike Gao1, Jingyi Sang1, Zhuo Wan1
1Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, and Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China.
Small extracellular vesicles (sEVs) show promise for in situ tissue engineering due to their regenerative capabilities. Developing effective delivery systems is crucial to overcome rapid in vivo clearance and enhance therapeutic sustainability for regenerative medicine applications.
Area of Science:
- Regenerative Medicine
- Biotechnology
- Nanomedicine
Background:
- In situ tissue engineering leverages the body's regenerative capacity, outperforming traditional ex situ methods.
- Small extracellular vesicles (sEVs) are emerging as potent cell-free agents for in situ tissue engineering, mimicking cellular paracrine functions.
- Current sEV applications face limitations due to rapid in vivo clearance, necessitating advanced delivery systems for sustained therapeutic effects.
Purpose of the Study:
- To systematically review the sources and bioactivities of small extracellular vesicles (sEVs).
- To delineate design principles and technological advancements in sEV delivery systems.
- To highlight the applications of sEVs in tissue engineering and explore future intelligent delivery platforms.
Main Methods:
- Literature review of sEV sources, bioactivities, and delivery systems.
- Analysis of design principles for enhancing sEV therapeutic sustainability.
- Exploration of sEV applications in various tissue engineering contexts.
Main Results:
- sEVs possess low immunogenicity, multi-target regulation, and barrier-crossing capabilities.
- Effective delivery systems are critical to mitigate rapid in vivo clearance of sEVs.
- Significant progress has been made in designing sEV delivery platforms for tissue regeneration.
Conclusions:
- sEVs are highly promising for in situ tissue engineering, offering cell-free regenerative potential.
- Overcoming the challenge of rapid in vivo clearance through advanced delivery systems is key for clinical translation.
- Future research should focus on developing intelligent delivery platforms for enhanced sEV therapeutics in regenerative medicine.
