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In the CNS, neurogenesis, the birth of new neurons from stem cells, is limited to the hippocampus in adults. In other regions of the brain and spinal cord, neurogenesis is almost non-existent due to inhibitory influences from neuroglia, especially oligodendrocytes, and the absence of growth-stimulating cues. The myelin produced by oligodendrocytes in the CNS inhibits neuronal regeneration. Furthermore, astrocytes proliferate rapidly after neuronal damage, forming scar tissue that physically...
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Related Experiment Video

Updated: Feb 19, 2026

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Copine1 regulates neural stem cell functions during brain development.

Tae Hwan Kim1, Soo-Eun Sung2, Jae Cheal Yoo3

  • 1Rare Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, South Korea; Department of Biochemistry, Chungnam National University School of Medicine, 266 Munhwa-ro, Jung-gu, Daejeon 35015, South Korea; Department of Medical Science, Chungnam National University School of Medicine, 266 Munhwa-ro, Jung-gu, Daejeon 35015, South Korea.

Biochemical and Biophysical Research Communications
|November 5, 2017
PubMed
Summary

Copine 1 (CPNE1) is crucial for brain development, regulating neural stem cell (NSC) proliferation and differentiation. Its deficiency impairs AKT-mTOR signaling, highlighting CPNE1

Keywords:
Copine1GliogenesisNeural stem cellNeurogenesismTOR

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Cell Biology

Background:

  • Copine 1 (CPNE1) is a phospholipid-binding protein found in cell plasma membranes.
  • CPNE1 is linked to the AKT signaling pathway, vital for neural stem cell (NSC) functions in brain development.

Purpose of the Study:

  • To investigate the role of CPNE1 in regulating brain NSC functions during development.
  • To elucidate the underlying molecular mechanisms of CPNE1's action in the developing brain.

Main Methods:

  • Examined CPNE1 expression in human neural lineage cells and mouse brain tissues across developmental stages.
  • Utilized primary mouse embryonic hippocampal NSCs for in vitro modeling of brain development.
  • Assessed proliferation and multi-lineage differentiation in CPNE1-deficient NSCs.

Main Results:

  • CPNE1 is abundantly expressed in human neural cells and is upregulated in early embryonic mouse brain stages.
  • CPNE1 deficiency in vitro led to reduced NSC proliferation and differentiation potential.
  • CPNE1 deficiency downregulated the mTOR signaling pathway in embryonic NSCs.

Conclusions:

  • CPNE1 is essential for regulating neural stem cell functions during brain development.
  • CPNE1 exerts its regulatory role by activating the AKT-mTOR signaling pathway.