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Updated: Mar 15, 2026

Isolation and Cultivation of Neural Progenitors Followed by Chromatin-Immunoprecipitation of Histone 3 Lysine 79 Dimethylation Mark
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Histone methylation, alternative splicing and neuronal differentiation.

Ana Fiszbein1, Alberto R Kornblihtt1

  • 1Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE-CONICET) and Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires , Buenos Aires, Argentina.

Neurogenesis (Austin, Tex.)
|September 9, 2016
PubMed
Summary

Alternative splicing of G9a regulates its nuclear localization, impacting histone methylation and promoting neuronal differentiation. This highlights the critical role of splicing in balancing histone methylation and demethylation for neuron-specific gene expression.

Keywords:
G9aH3K9mealternative splicingchromatin modifiersneuronal differentiation

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Area of Science:

  • Molecular Biology
  • Neuroscience
  • Epigenetics

Background:

  • Chromatin structure and alternative splicing are crucial for neuronal differentiation.
  • G9a enzyme mediates histone H3 lysine 9 methylation (H3K9me1/me2), impacting cell differentiation.
  • Previous work showed G9a alternative splicing affects its nuclear localization and H3K9 methylation efficiency.

Purpose of the Study:

  • To discuss findings on G9a alternative splicing's role in neuronal differentiation.
  • To integrate these results with studies on LSD1 alternative splicing in neurons.
  • To emphasize the significance of alternative splicing in regulating histone methylation/demethylation balance for neuron-specific transcription.

Main Methods:

  • Analysis of G9a alternative splicing.
  • Assessment of G9a nuclear localization.
  • Evaluation of H3K9 methylation efficiency.
  • Integration of findings with existing literature on LSD1 alternative splicing.

Main Results:

  • Alternative splicing of G9a controls its nuclear import.
  • Regulated nuclear localization of G9a enhances H3K9 methylation.
  • This process is vital for promoting neuronal differentiation.
  • The findings align with the role of LSD1 alternative splicing in neuronal gene expression.

Conclusions:

  • Alternative splicing of G9a is a key regulator of neuronal differentiation.
  • A balance between histone methylation (G9a) and demethylation (LSD1) is essential for neuron-specific transcription.
  • Alternative splicing plays a critical role in establishing this epigenetic equilibrium.