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Enrichment of Astrocyte-Derived Extracellular Vesicles from Human Plasma

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Published on: August 3, 2022

Stem Cell-Derived Extracellular Vesicle Therapy in Ischemic Brain Injuries.

Chunfang Qiu¹, Abel Lindley¹, Xiaofeng Jia^1,2,3

¹Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD, USA.

Journal of Stroke

|October 14, 2025

Summary

Stem cell-derived extracellular vesicles (SC-EVs) show promise for treating ischemic brain injury (IBI). These nanoparticles offer regenerative effects and multiple therapeutic mechanisms for neurological repair.

Keywords:

Cardiac arrest Extracellular vesicles Ischemic brain injury Stem cells Stroke

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Characterization of Immune Cell-derived Extracellular Vesicles and Studying Functional Impact on Cell Environment

Characterization of Immune Cell-derived Extracellular Vesicles and Studying Functional Impact on Cell Environment

Published on: June 2, 2020

Area of Science:

Neuroscience
Regenerative Medicine
Biotechnology

Background:

Ischemic brain injury (IBI), encompassing stroke and global cerebral injury, poses significant clinical challenges with limited effective neurological repair strategies.
Extracellular vesicles (EVs), particularly stem cell-derived EVs (SC-EVs), are emerging as potent cell-free therapeutic agents due to their intercellular communication roles and regenerative potential.

Purpose of the Study:

To provide a comprehensive review of the therapeutic applications of SC-EVs in treating IBI.
To compare different SC-EV sources, elucidate their mechanisms of action, and discuss advancements in SC-EV engineering.
To address challenges in preclinical-to-clinical translation, including standardization and ethical considerations.

Main Methods:

Review of existing literature on SC-EVs for IBI treatment.
Analysis of SC-EV sources, mechanisms (immunomodulation, neurogenesis, mitochondrial transfer, myelin repair), and engineering strategies.
Evaluation of preclinical findings, clinical trial readiness, and ethical implications.

Main Results:

SC-EVs exhibit regenerative and angiogenic effects comparable to stem cells, offering a promising cell-free therapy for IBI.
Multifaceted mechanisms of SC-EVs include immunomodulation, neurogenesis, mitochondrial transfer, and myelin repair.
Engineering SC-EVs enhances targeting and efficacy, while standardization is crucial for reproducible in vivo studies.

Conclusions:

SC-EVs represent a significant advancement in cell-free therapy for IBI, with diverse therapeutic mechanisms and potential for enhancement through bioengineering.
Bridging the gap between preclinical research and clinical trials requires standardized protocols and careful consideration of ethical and equity issues for responsible translation.