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Related Experiment Video

Updated: Dec 18, 2025

Murine Model of CD40-activation of B cells
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CD44 expression in the cuprizone model.

Christin Reinbach1, Maria-Sophia Stadler1, Nicolas Pröbstl1

  • 1Department of Anatomy II, Ludwig-Maximilians-University of Munich, Pettenkoferstr. 11, 80336 Munich, Germany.

Brain Research
|June 12, 2020
PubMed
Summary
This summary is machine-generated.

CD44 expression increases in a toxin-induced multiple sclerosis model, localized to glial cells in demyelinated areas. However, CD44 deficiency did not alter pathology, suggesting a complex role in this condition.

Keywords:
CD44CuprizoneDemyelinationImmunohistochemistryMultiple sclerosis

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Area of Science:

  • Neuroscience
  • Immunology
  • Cell Biology

Background:

  • Changes in extracellular matrix receptors like CD44 are implicated in immune cell recruitment and lesion formation in multiple sclerosis (MS).
  • Understanding CD44's role in MS pathogenesis is crucial for developing targeted therapies.

Purpose of the Study:

  • To investigate the expression pattern and functional significance of CD44 in an autoimmune-independent, toxin-induced model of MS using the cuprizone model.
  • To elucidate the cellular localization of CD44 in demyelinated lesions and its impact on glial cell activation and myelination.

Main Methods:

  • Real-time qRT-PCR and immunohistochemical staining to analyze CD44 expression in cuprizone-intoxicated mouse tissues.
  • Immunofluorescence labeling and in-situ hybridization for co-localization analysis with glial cell markers (GFAP, IBA1).
  • Assessment of pathology in CD44-deficient mice to determine functional importance.

Main Results:

  • CD44 expression was induced in a time-dependent manner in the cuprizone model, primarily in the glia limitans and demyelinated white matter, including the corpus callosum.
  • CD44 was localized on astrocytes (GFAP+) and microglial cells (IBA1+) within demyelinated areas.
  • Despite robust CD44 induction, CD44-deficient mice did not show amelioration of cuprizone-induced pathology.

Conclusions:

  • CD44 expression is upregulated in an autoimmune-independent MS model, associated with glial cells in demyelinated regions.
  • CD44 deficiency did not influence the severity of cuprizone-induced demyelination or pathology.
  • Further research is needed to clarify the precise functional role of CD44 in various pathological conditions, including MS.