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Related Experiment Video

Updated: Jan 11, 2026

An Experimental System to Study Mechanotransduction in Fetal Lung Cells

An Experimental System to Study Mechanotransduction in Fetal Lung Cells

Published on: February 16, 2012

Fibroblast mechanoperception instructs pulmonary developmental and pattern specification gene expression programs.

Andrew E Miller¹, Ping Hu¹, Riley T Hannan²

¹Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, United States of America.

|November 10, 2025

Summary

This summary is machine-generated.

Impaired cell sensing of mechanical signals can shut down HOXA5, a key gene for lung development. This links integrin signaling to disrupted tissue formation in lung diseases.

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Refined Murine Model of Idiopathic Pulmonary Fibrosis

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Published on: June 17, 2025

Area of Science:

Cell Biology
Genomics
Tissue Engineering

Background:

Cellular mechanotransduction is crucial for tissue remodeling in pathologies like fibrosis and cancer.
Understanding how cells misinterpret mechanical cues is vital for studying disease.
Thy-1 (CD90) loss serves as a model for impaired cellular mechanoperception.

Purpose of the Study:

To investigate the genomic consequences of impaired mechanoperception in lung fibroblasts.
To characterize changes in lung fibroblast genomic activity in response to substrate stiffness and time.
To explore the regulatory mechanisms underlying HOXA5 gene silencing due to abnormal mechanoperception.

Main Methods:

Utilized ATAC-sequencing and RNA-sequencing in parallel.
Employed Thy-1 (CD90) loss as a model of impaired mechanoperception.
Investigated HOXA5 expression in vitro, examining integrin signaling, cytoskeletal tension, and SRC kinase activity.

Main Results:

Perturbed mechanoperception led to a near-complete shutdown of HOXA5 expression.
Identified a potential mechanism linking increased αv integrin signaling, cytoskeletal tension, and SRC kinase activity to HOXA5 silencing.
Established novel connections between integrin signaling and gene expression dynamics crucial for lung development and regeneration.

Conclusions:

Dysregulated mechanoperception significantly impacts lung fibroblast genomic activity.
HOXA5 silencing is a key consequence of impaired mechanoperception, affecting lung development.
Findings provide insights into the molecular mechanisms underlying tissue remodeling pathologies and potential therapeutic targets.