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Related Experiment Video

Updated: Jul 3, 2026

Time-Lapse Imaging of Migrating Neurons and Glial Progenitors in Embryonic Mouse Brain Slices
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Clusterin expression during fetal and postnatal CNS development in mouse.

Y Charnay1, A Imhof, P G Vallet

  • 1Division of Neuropsychiatry, Department of Psychiatry, University Hospitals of Geneva, 2, Ch du petit-Bel-Air, CH-1225 Chene-Bourg, Geneva, Switzerland. Yves.Charnay@medecine.unige.ch

Neuroscience
|July 16, 2008
PubMed
Summary

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Clusterin (apolipoprotein J) is present early in mouse brain development. While its absence doesn't broadly affect CNS development, clusterin deficiency significantly impacts motor neuron development.

Area of Science:

  • Neuroscience
  • Developmental Biology
  • Molecular Biology

Background:

  • Clusterin (apolipoprotein J) is a multifunctional glycoprotein implicated in CNS plasticity and tissue remodeling.
  • Its precise role and developmental trajectory within the central nervous system (CNS) remain incompletely understood.

Purpose of the Study:

  • To investigate the ontogeny of clusterin expression in the developing CNS of wild-type (WT) mice.
  • To explore the developmental consequences of clusterin gene knockout (Clu-/-) on CNS development.

Main Methods:

  • Utilized biochemical and morphological approaches to study clusterin expression patterns.
  • Employed real-time polymerase chain amplification and clusterin-immunoreactivity dot-blot analyses.
  • Conducted comparative analyses between WT and Clu-/- mice during postnatal development.

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Main Results:

  • Clusterin mRNA expression was detected in the fetal CNS (E14/E15) and postnatal CNS, with strong signals in motor nuclei from the first postnatal week.
  • Clusterin levels paralleled mRNA expression.
  • While no significant differences were observed in overall brain weight or general neuronal/glial markers, Clu-/- mice showed a significant deficit (-16%) in large motor neurons in the facial nucleus.

Conclusions:

  • Clusterin expression begins in fetal life, particularly in subcortical structures.
  • The absence of clusterin does not broadly impair fundamental CNS development.
  • Clusterin deficiency negatively impacts the development of specific motor neuron populations.