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A Fluorescence-Based Assay of Membrane Potential for High-Throughput Functional Study of Two Endogenous Ion Channels in Two Epithelial Cell Lines
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Genetic networks responsive to sodium butyrate in colonic epithelial cells

Yoshiaki Tabuchi1, Ichiro Takasaki, Takeshi Doi

  • 1Division of Molecular Genetics Research, Life Science Research Center, University of Toyama, Toyama 930-0194, Japan. ytabu@cts.u-toyama.ac.jp

FEBS Letters
|May 9, 2006
PubMed

Insights

Sodium butyrate (SB) triggers growth arrest and differentiation in mouse colonic cells. Gene network analysis revealed SB impacts cellular development, cell cycles, and metabolic pathways like fatty acid and pyrimidine biosynthesis.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Biochemistry

Background:

  • Sodium butyrate (SB) is a short-chain fatty acid with known biological activities.
  • Understanding SB's molecular mechanisms in colonic epithelial cells is crucial for therapeutic development.

Purpose of the Study:

  • To elucidate the detailed molecular mechanisms of sodium butyrate (SB) in inducing cell growth arrest and differentiation.
  • To identify specific gene networks and canonical pathways affected by SB treatment in mouse colonic epithelial MCE301 cells.

Main Methods:

  • Microarray analysis to identify differentially expressed genes.
  • Computational gene network analysis to map molecular interactions.
  • Treatment of MCE301 cells with 2mM sodium butyrate.

Main Results:

  • Identified 2,604 differentially expressed probe sets in SB-treated cells.
  • Classified gene expression changes into four groups, revealing distinct temporal patterns.
  • Highlighted genetic networks related to cellular development and cell cycles.
  • Identified canonical pathways involved in fatty acid biosynthesis and pyrimidine metabolism.

Conclusions:

  • SB significantly alters gene expression in colonic epithelial cells.
  • SB's effects are mediated through complex genetic networks impacting cell growth and metabolism.
  • These findings provide a foundation for understanding SB's role in colonic cell biology.

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