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Dissecting asthma using focused transgenic modeling and functional genomics.

Douglas A Kuperman1, Christina C Lewis, Prescott G Woodruff

  • 1Department of Medicine, Allergy-Immunology Division, Northwestern University Feinberg School of Medicine, Chicago, USA.

The Journal of Allergy and Clinical Immunology
|August 9, 2005
PubMed
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This study used a specialized mouse model to pinpoint how Interleukin-13 (IL-13) affects airway epithelial cells in asthma. Key gene expression changes in mice were also observed in human asthma patients, identifying potential therapeutic targets.

Area of Science:

  • Genomics
  • Immunology
  • Respiratory Medicine

Background:

  • Asthma research faces challenges in linking gene expression to disease mechanisms.
  • Simplified model systems, like the IL-13/Epi mouse, can isolate specific mediator effects.
  • The IL-13/Epi model exhibits airway hyperreactivity and mucus overproduction without inflammation.

Purpose of the Study:

  • To investigate the impact of IL-13 on airway epithelial cells in asthma.
  • To identify gene expression changes in murine asthma models.
  • To determine if these changes are relevant to human asthma.

Main Methods:

  • Gene expression analysis using microarrays in three mouse models: ovalbumin allergic, IL-13-overexpressing, and IL-13/Epi mice.
  • Comparison of gene expression profiles across models.

Related Experiment Videos

  • Analysis of human orthologues in airway epithelial cells from asthma patients and controls.

    • Main Results:

    • The IL-13/Epi model showed a limited set of gene expression changes compared to other models.
    • Human orthologues of certain upregulated genes in mouse models were also elevated in human asthma patients.
    • Identified genes include calcium-activated chloride channel 1, 15-lipoxygenase, trefoil factor 2, and intelectin.

    Conclusions:

    • Combining focused transgenic models with microarray analysis offers a powerful approach.
    • This method aids in dissecting specific mediator and cell-type contributions to asthma.
    • It helps focus research on key genes related to asthma pathophysiology.