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Culturing of Human Nasal Epithelial Cells at the Air Liquid Interface
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Published on: October 8, 2013

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A map of signaling responses in the human airway epithelium

Katherine B Mccauley1,2, Kalki Kukreja1, Aron B Jaffe2,3

  • 1Department of Systems Biology, Harvard Medical School, Boston, MA, USA.

Biorxiv : the Preprint Server for Biology
|January 4, 2023
PubMed

Insights

This study maps airway epithelial cell signaling responses to 17 pathways, revealing how these interactions drive regeneration and disease. The findings identify specific signaling pathways linked to lung diseases like COVID-19.

Area of Science:

  • Cell Biology
  • Regenerative Medicine
  • Systems Biology

Background:

  • Receptor-mediated signaling is crucial for tissue regeneration but is often dysregulated in diseases.
  • Understanding these signaling pathways in human tissues is vital for developing new therapies.

Approach:

  • Created a signaling-response map of the human airway epithelium using organotypic cultures.
  • Analyzed the impact of 17 receptor-mediated signaling pathways on epithelial cell types, abundance, and phenotype.
  • Identified convergent signaling states and ligand-specific responses, including basal cell and secretory cell metaplasia.

Key Points:

  • The map accurately reflects known airway epithelial responses to signaling pathways.
  • Canonical differentiation loss due to multiple pathways correlates with cell cycle arrest, but does not fully block differentiation.
  • A TGFB1-mediated response is linked to aberrant cells in lung diseases, and interferon responses are identified in COVID-19 samples.

Conclusions:

  • The developed signaling-response map provides a framework for systematically evaluating tissue signaling.
  • This research offers insights into the mechanisms underlying lung diseases and identifies potential therapeutic targets.

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