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Updated: Jun 29, 2026

An Alternative Culture Method to Maintain Genomic Hypomethylation of Mouse Embryonic Stem Cells Using MEK Inhibitor PD0325901 and Vitamin C
11:53

An Alternative Culture Method to Maintain Genomic Hypomethylation of Mouse Embryonic Stem Cells Using MEK Inhibitor PD0325901 and Vitamin C

Published on: June 1, 2018

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Vitamin C and MEK Inhibitor PD0325901 Synergistically Promote Oligodendrocytes Generation by Promoting DNA

Xinyue Ren1,2, Ying Yang1,2,3, Min Wang1

  • 1State Key Laboratory of Drug Research, National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.

Molecules (Basel, Switzerland)
|January 8, 2025
PubMed

Insights

Vitamin C and a MEK inhibitor promote oligodendrocyte differentiation by increasing 5-hydroxymethylcytosine (5hmC) DNA demethylation. This epigenetic modification is crucial for cell fate and holds potential for treating demyelination diseases.

Area of Science:

  • Epigenetics
  • Neuroscience
  • Cell Biology

Background:

  • DNA methylation and demethylation are critical epigenetic mechanisms governing gene expression and cell differentiation.
  • 5-hydroxymethylcytosine (5hmC) is a key intermediate in DNA demethylation, particularly important in brain development.
  • Oligodendrocyte progenitor cells (OPCs) differentiate into oligodendrocytes (OLs), essential for myelin sheath formation in the central nervous system.

Purpose of the Study:

  • To investigate the role of DNA demethylation via hydroxymethylation in Vitamin C (Vc) and MEK inhibitor PD0325901-induced OPC-to-OL differentiation.
  • To determine if TET1 is involved in the differentiation process promoted by Vc and PD0325901.
  • To explore the potential of Vc and PD0325901 as a combination therapy for demyelination diseases.

Main Methods:

  • Treatment of OPCs with Vitamin C (Vc) and MEK inhibitor PD0325901.
  • Assessment of OPC-to-OL differentiation.
  • Inhibition of 5hmC formation to evaluate its role in Vc- and PD0325901-stimulated differentiation.
  • Analysis of TET1 involvement in the differentiation process.

Main Results:

  • Vc and PD0325901 significantly promote OPC-to-OL differentiation.
  • This promotion is mediated by inducing DNA demethylation through hydroxymethylation (5hmC).
  • Blocking 5hmC formation abrogated the differentiation-promoting effects of Vc and PD0325901.
  • TET1 was found not to be involved in the Vc- and PD0325901-promoted OL generation.
  • A synergistic effect was observed between Vc and PD0325901 in inducing OL generation.

Conclusions:

  • Vitamin C and PD0325901 enhance OPC-to-OL differentiation by increasing 5hmC levels, indicating a role for DNA hydroxymethylation in this process.
  • The findings suggest that TET1 is not the primary mediator of this effect.
  • The synergistic action of Vc and PD0325901 presents a promising therapeutic strategy for demyelination disorders.
Keywords:
5-hydroxymethylcytosineDNA demethylationPD0325901TET enzymesoligodendrocyteoligodendrocyte progenitor cellvitamin C

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