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Related Experiment Video

Updated: Feb 28, 2026

Aip1p Dynamics Are Altered by the R256H Mutation in Actin

Aip1p Dynamics Are Altered by the R256H Mutation in Actin

Published on: July 30, 2014

IPF AT2 cells are stuck in transition and biophysically dysfunctional.

Andrey Krivoy¹, Daniel Sevilla-Sanchez², Ian T Stancil¹

¹Department of Medicine, University of Colorado Anschutz; Aurora, 80045, USA.

Biorxiv : the Preprint Server for Biology

|February 27, 2026

Summary

Idiopathic Pulmonary Fibrosis (IPF) research reveals that alveolar type 2 cells exhibit persistent migration, contributing to lung tissue remodeling. Understanding these cellular dynamics offers new insights into IPF progression.

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Last Updated: Feb 28, 2026

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Published on: May 18, 2017

Area of Science:

Pulmonary Medicine
Cell Biology
Tissue Remodeling

Background:

Idiopathic Pulmonary Fibrosis (IPF) is an incurable lung disease with significant cellular dysfunction.
A key knowledge gap in IPF research is understanding how short-term cellular behaviors lead to long-term tissue changes.

Purpose of the Study:

To investigate the role of alveolar type 2 (AT2) cell behavior in the progression of lung fibrosis in IPF.
To identify the molecular mechanisms driving AT2 cell dynamics in fibrotic lung tissue.

Main Methods:

Optimized lung slice cultures from explanted human lungs.
Microscopic analysis to identify migratory AT2 cells in fibrotic regions.
Pharmacological manipulation of signaling pathways (β-catenin and YAP).

Main Results:

Discovered foci of migratory non-canonical AT2 cells within established IPF lung fibrosis.
Observed AT2 cells trapped in transitional states driven by persistent developmental repair programs.
β-catenin activation promoted persistent AT2 cell migration, while YAP activation inhibited it.

Conclusions:

Imbalanced developmental programs in AT2 cells drive their motility and contribute to lesion heterogeneity in IPF.
This provides a mechanistic link between short-term cellular dynamics and the progressive nature of IPF.
Findings offer potential targets for therapeutic interventions in IPF.