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Hydroxyfasudil alleviates demyelination through the inhibition of MOG antibody and microglia activation in cuprizone

Jing Wang1, Ruo-Xuan Sui2, Qiang Miao2

  • 1Shanxi Medical University, Taiyuan030001, China.

Clinical Immunology (Orlando, Fla.)
|January 21, 2019
PubMed

Insights

Hydroxyfasudil (HF) shows therapeutic potential for multiple sclerosis (MS) by improving behavior and reducing myelin damage in a cuprizone model. It also mitigates immune responses and promotes neural repair, offering hope for MS treatment.

Area of Science:

  • Neuroscience
  • Immunology
  • Pharmacology

Background:

  • Multiple sclerosis (MS) is a central nervous system disease causing demyelination and neurodegeneration.
  • The cuprizone (CPZ) model is crucial for studying demyelination and remyelination processes.
  • Understanding therapeutic interventions for MS is critical.

Purpose of the Study:

  • To investigate the therapeutic effects of Hydroxyfasudil (HF) in the CPZ-induced demyelination model.
  • To assess HF's impact on behavioral abnormalities, myelin damage, and immune responses in MS.
  • To explore HF's potential to promote neuroprotection and remyelination.

Main Methods:

  • Utilized the cuprizone (CPZ) mouse model to induce demyelination.
  • Administered Hydroxyfasudil (HF) to CPZ-treated mice.
  • Evaluated behavioral outcomes, myelin integrity (corpus callosum), splenic changes, and antibody levels (MOG).
  • Analyzed immune cell populations (CD4+IL-17+ T cells, CD4+ T cells, CD68+ macrophages) in splenocytes and brain tissue.
  • Assessed neuroinflammation markers and neurotrophic factor (BDNF) production.
  • Quantified oligodendrocyte precursor cell (NG2+) regeneration.

Main Results:

  • HF improved behavioral deficits and reduced myelin damage in the corpus callosum of CPZ mice.
  • HF partially restored splenic atrophy and inhibited myelin oligodendrocyte glycoprotein (MOG) antibody production, reducing antibody binding to oligodendrocytes.
  • HF decreased CD4+IL-17+ T cells, CD4+ T cells, and CD68+ macrophages in the brain, indicating reduced neuroinflammation.
  • HF promoted astrocyte-derived brain-derived neurotrophic factor (BDNF) production and enhanced the regeneration of NG2+ oligodendrocyte precursor cells.

Conclusions:

  • Hydroxyfasudil (HF) demonstrates significant therapeutic effects in a mouse model of demyelination.
  • HF mitigates neuroinflammation, protects myelin, and promotes remyelination by supporting oligodendrocyte precursor cell regeneration.
  • These findings suggest HF as a promising candidate for treating multiple sclerosis.
Keywords:
Cuprizone-induced demyelinationHydroxyfasudilRho kinase

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