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Updated: Jun 25, 2026

Generation of Human Primordial Germ Cell-like Cells at the Surface of Embryoid Bodies from Primed-pluripotency Induced Pluripotent Stem Cells
12:06

Generation of Human Primordial Germ Cell-like Cells at the Surface of Embryoid Bodies from Primed-pluripotency Induced Pluripotent Stem Cells

Published on: January 11, 2019

Suppression of Oct4 by germ cell nuclear factor restricts pluripotency and promotes neural stem cell development in

Wado Akamatsu1, Brian DeVeale, Hideyuki Okano

  • 1Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada M5S3E1. wado@sc.itc.keio.ac.jp

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
|February 21, 2009
PubMed

Insights

Primitive neural stem cells transition to definitive neural stem cells via germ cell nuclear factor (GCNF) suppressing Oct4. This process restricts non-neural differentiation potential in early neural stem cell development.

Area of Science:

  • Developmental Biology
  • Stem Cell Biology
  • Neuroscience

Background:

  • Murine neural stem cells exist in primitive (LIF-dependent) and definitive (FGF2-dependent) states.
  • Primitive neural stem cells possess broader differentiation potential, including non-neural tissues, which diminishes upon transition to definitive neural stem cells.

Purpose of the Study:

  • To elucidate the molecular mechanisms regulating the transition from primitive to definitive neural stem cells.
  • To investigate the role of Oct4 and germ cell nuclear factor (GCNF) in this developmental process.

Main Methods:

  • Analysis of Oct4 expression in primitive and definitive neural stem cells.
  • Utilizing GCNF knockout mice to study the impact on neural stem cell development.
  • Oct4 knockdown and overexpression experiments in neural stem cells.

Main Results:

  • Oct4 is expressed in primitive neural stem cells and suppressed in definitive neural stem cells.
  • Loss of GCNF leads to sustained Oct4 expression and suppressed definitive neural stem cell generation.
  • Oct4 suppression by GCNF is crucial for the primitive to definitive neural stem cell transition and loss of non-neural competency.

Conclusions:

  • Germ cell nuclear factor (GCNF) induces the suppression of Oct4, which is essential for the development of primitive into definitive neural stem cells.
  • Oct4 promoter methylation and GCNF-dependent mechanisms contribute to pluripotency loss during this transition.
  • GCNF-mediated Oct4 suppression is a key regulatory event in early neural stem cell lineage development.

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