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Updated: Jul 8, 2026

Analysis of Retinoic Acid-induced Neural Differentiation of Mouse Embryonic Stem Cells in Two and Three-dimensional Embryoid Bodies
09:04

Analysis of Retinoic Acid-induced Neural Differentiation of Mouse Embryonic Stem Cells in Two and Three-dimensional Embryoid Bodies

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Retinoic acid downregulates Rae1 leading to APC(Cdh1) activation and neuroblastoma SH-SY5Y differentiation

J Cuende1, S Moreno, J P Bolaños

  • 1Unidad de Investigación, Hospital Universitario de Salamanca, Instituto de Estudios de Ciencias de la Salud de Castilla y León, Salamanca, Spain.

Oncogene
|January 24, 2008
PubMed

Insights

Retinoic acid triggers neuroblastoma cell differentiation by promoting Skp2 protein degradation via Cdh1. This process involves downregulating Rae1, leading to cell cycle arrest and differentiation.

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Cancer Research

Background:

  • Retinoic acid induces neuroblastoma differentiation via Skp2 degradation and p27 stabilization.
  • The mechanism of retinoic acid-induced Skp2 destabilization was previously unknown.

Purpose of the Study:

  • To investigate if retinoic acid promotes neuroblastoma differentiation by modulating Cdh1.
  • To elucidate the role of Cdh1 in retinoic acid-mediated Skp2 destabilization and neuroblastoma cell cycle arrest.

Main Methods:

  • Studied Cdh1 modulation in retinoic acid-treated SH-SY5Y neuroblastoma cells.
  • Assessed Skp2 destabilization, p27 accumulation, and Cdh1 nuclear localization.
  • Investigated the role of Rae1 (a nuclear export factor) in the process.
  • Utilized Rae1 overexpression and Cdh1 inhibition to validate findings.

Main Results:

  • Retinoic acid induced Cdh1 nuclear accumulation, Skp2 destabilization, and p27 accumulation.
  • Retinoic acid treatment decreased Rae1 mRNA and protein levels.
  • Rae1 overexpression or Cdh1 inhibition blocked retinoic acid-induced cell cycle arrest and differentiation.
  • Rae1 inhibition enhanced retinoic acid-induced differentiation.

Conclusions:

  • Retinoic acid downregulates Rae1, enhancing APC(Cdh1) activity.
  • This facilitates Skp2 degradation, leading to cell cycle arrest and neuroblastoma differentiation.
  • The Rae1/Cdh1/Skp2 pathway is crucial for retinoic acid's effects on neuroblastoma.

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