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Updated: Jun 11, 2025
Characterization and Isolation of Mouse Primary Microglia by Density Gradient Centrifugation
Published on: February 16, 2018
Research Progress on Treating Spinal Cord Injury by Modulating the Phenotype of Microglia
Qinghe Yu1, Ziming Cai1, Xiaofeng Liu1
1Department of Spine Surgery, Shenzhen Pingle Orthopedic Hospital, Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine, 518118 Shenzhen, Guangdong, China.
Abstract:
Spinal cord injury (SCI) is a severe central nervous system disorder with no currently available effective treatment. Microglia are immune cells in the central nervous system that play crucial roles in the SCI occurrence, development, and recovery stages. They exhibit dynamic polarization over time and can switch between classical activation (M1) and alternative activation (M2) phenotypes to respond to environmental stimuli. The M1 phenotype is involved in initiating and sustaining inflammatory responses, while the M2 phenotype exerts anti-inflammatory effects and promotes tissue repair in damaged areas. Inhibiting M1 polarization and promoting M2 polarization have become hotspots in regulating neuroinflammation and treating SCI. This article provides a comprehensive review centered on modulating microglial polarization phenotypes for SCI treatment.
Insights
Modulating microglia polarization is key for spinal cord injury (SCI) treatment. Shifting immune cells from inflammatory (M1) to repair (M2) phenotypes offers a promising therapeutic strategy for central nervous system recovery.
Area of Science:
- Neuroscience
- Immunology
- Regenerative Medicine
Background:
- Spinal cord injury (SCI) is a severe neurological disorder lacking effective treatments.
- Microglia, the central nervous system's immune cells, are critical in SCI pathogenesis and recovery.
- Microglia dynamically polarize into M1 (pro-inflammatory) and M2 (anti-inflammatory/repair) phenotypes.
Purpose of the Study:
- To review the role of microglial polarization in SCI.
- To explore strategies for modulating microglial phenotypes for SCI treatment.
Main Methods:
- Comprehensive literature review on microglial polarization in SCI.
- Analysis of M1 and M2 phenotypes' functions and regulation.
Main Results:
- M1 phenotype exacerbates inflammation and damage post-SCI.
- M2 phenotype promotes tissue repair and resolution of inflammation.
- Targeting microglial polarization is a key therapeutic avenue.
Conclusions:
- Modulating microglial polarization from M1 to M2 is a promising strategy for SCI treatment.
- Further research into targeted interventions is warranted to harness M2-mediated repair mechanisms.
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