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Exploring celiac disease candidate pathways by global gene expression profiling and gene network cluster analysis.

Babajan Banaganapalli1,2, Haifa Mansour1, Arif Mohammed3

  • 1Department of Genetic Medicine, Faculty of Medicine, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.

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|October 2, 2020
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Summary

Celiac disease involves altered gene expression in the gut, impacting cell division, immunity, and metabolism. This study reveals new molecular insights into celiac disease pathogenesis and potential therapies.

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Area of Science:

  • Gastroenterology
  • Immunology
  • Molecular Biology

Background:

  • Celiac disease (CeD) is an autoimmune disorder with incompletely understood molecular mechanisms.
  • Global gene expression analysis is crucial for deciphering CeD pathophysiology.

Purpose of the Study:

  • To compare gene expression profiles in celiac disease patients' duodenal tissues at diagnosis and after gluten-free diet.
  • To identify molecular pathways involved in CeD pathogenesis using systems biology approaches.

Main Methods:

  • Differential gene expression analysis.
  • Protein-protein interaction networks.
  • Gene network-cluster analysis.
  • Pathway enrichment analysis.

Main Results:

  • Identified 106 upregulated and 193 downregulated genes in CeD duodenal tissues.
  • Highlighted involvement of cell cycle, p53 signaling, and immune pathways (NOD-like receptor, Th1/Th2, IL-17).
  • Revealed dysregulation in mineral/vitamin absorption and drug metabolism pathways.

Conclusions:

  • Aberrant cell division, immune responses, and metabolic pathways contribute to CeD pathophysiology.
  • Molecular dysfunctions promote intraepithelial lymphocytes and villous atrophy.
  • Findings suggest novel therapeutic targets for celiac disease.