Related Experiment Video
Updated: Jun 7, 2025
High Throughput Characterization of Adult Stem Cells Engineered for Delivery of Therapeutic Factors for Neuroprotective Strategies
Published on: January 4, 2015
Regulation of nerve cells and therapeutic potential in central nervous system injury using microglia-derived exosomes
Dongxiao Lu1, Haohan Sun2, Hao Fan3
1College of Clinical Medicine, Jining Medical University, Jining 272067, China; Department of Neurosurgery, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan 250014, China; Shandong Engineering Research Center of Precision Diagnosis and Treatment Technology for Neuro-oncology, Jinan 250014, China; Laboratory of Basic and Translational Neuromedicine, The First Affiliated Hospital of Shandong First Medical University, Jinan 250014, China; Shandong Institute of Brain Science and Brain-inspired Research, Jinan 250117, China.
Abstract:
The intercellular communication within the central nervous system (CNS) is of great importance for in maintaining brain function, homeostasis, and CNS regulation. When the equilibrium of CNS is disrupted or injured, microglia are immediately activated and respond to CNS injury. Microglia-derived exosomes are capable of participating in intercellular communication within the CNS by transporting various bioactive substances, including nucleic acids, proteins, lipids, amino acids, and metabolites. Nevertheless, microglia activation is a double-edged sword. Activated microglia can coordinate the neural repair process and, conversely, can amplify tissue injury and impede CNS repair. This work reviewed the roles of exosomes derived from microglia stimulated by different environments (mainly lipopolysaccharide, interleukin-4, and other specific preconditioning) in CNS injury and their possible therapeutic potentials. This work focuses on the regulation of exosomes derived from microglia stimulated by different environments on nerve cells. Meanwhile, we summarized the molecular mechanisms by which the relevant exosomes exert regulatory effects. Exosomes, derived from microglia stimulated by different environments, regulate other nerve cells during the repair of CNS injury, having beneficial or detrimental effects on CNS repair. A comprehensive understanding of the molecular mechanisms underlying their role can provide a robust foundation for the clinical treatment of CNS injury.
Insights
Microglia exosomes play a dual role in central nervous system (CNS) injury, offering repair or exacerbating damage. Understanding their molecular mechanisms is key for developing new CNS injury therapies.
Area of Science:
- Neuroscience
- Cell Biology
- Immunology
Background:
- Intercellular communication is vital for central nervous system (CNS) function and homeostasis.
- Microglia, the resident immune cells of the CNS, are activated upon injury and play a critical role in CNS repair.
- Microglia-derived exosomes mediate intercellular communication by transporting bioactive molecules, influencing CNS injury outcomes.
Purpose of the Study:
- To review the roles of exosomes derived from microglia stimulated by different environments in CNS injury.
- To explore the therapeutic potentials of microglia-derived exosomes.
- To summarize the molecular mechanisms by which these exosomes regulate nerve cells during CNS repair.
Main Methods:
- Literature review of studies on microglia-derived exosomes in CNS injury models.
- Analysis of exosomes derived from microglia preconditioned with lipopolysaccharide (LPS), interleukin-4 (IL-4), and other stimuli.
- Examination of the molecular cargo and effects of these exosomes on neural cells.
Main Results:
- Microglia activation presents a double-edged sword, with activated microglia potentially coordinating repair or amplifying injury.
- Exosomes derived from differently stimulated microglia exhibit diverse effects on CNS repair, ranging from beneficial to detrimental.
- Specific molecular mechanisms underlying exosome-mediated regulation of neural cells in CNS injury were summarized.
Conclusions:
- Microglia-derived exosomes are key players in CNS intercellular communication during injury.
- The effects of these exosomes are context-dependent, influenced by the microglial activation state.
- A deeper understanding of the molecular mechanisms of microglia-derived exosomes can pave the way for novel therapeutic strategies for CNS injuries.
More Related Videos
10:09Characterization of Immune Cell-derived Extracellular Vesicles and Studying Functional Impact on Cell Environment
Published on: June 2, 2020
08:52Three-dimensional Tissue Engineered Aligned Astrocyte Networks to Recapitulate Developmental Mechanisms and Facilitate Nervous System Regeneration
Published on: January 10, 2018
Related Concept Videos
01:15Neurogenesis and Regeneration of Nervous Tissue
01:19Mesenchymal Stem Cells