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Updated: Jan 29, 2026
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Microscopy Based Methods for the Assessment of Epithelial Cell Migration During In Vitro Wound Healing
Published on: January 2, 2018
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Collective Cell Migration in 3D Epithelial Wound Healing
Yuan Xiao, Reza Riahi1, Peter Torab
1Harvard-MIT Division of Health Sciences and Technology , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , United States.
ACS Nano
|February 14, 2019
Summary
This study introduces a novel 3D wound healing assay using photothermal ablation to investigate collective cell migration. It reveals key roles for ROCK and Notch1-Dll4 signaling in regulating this process.
Area of Science:
- Cell Biology
- Biophysics
- Tissue Engineering
Background:
- Collective cell migration is crucial for development, wound healing, and metastasis.
- Understanding cell migration in 3D microenvironments remains challenging.
Purpose of the Study:
- To develop and utilize a 3D wound healing assay for investigating collective cell migration in epithelial tissues.
- To elucidate the molecular mechanisms and signaling pathways governing 3D collective cell migration and wound healing.
Main Methods:
- Nanoparticle-mediated photothermal ablation to induce localized cell death and wound formation.
- Dynamic single-cell gene expression analysis, live-cell actin staining, and particle image velocimetry.
- Pharmacological inhibition and RNA interference to study signaling pathway roles.
Main Results:
- Observed 3D vortex motion towards the wound, followed by multicellular actin bundle and leader cell formation.
- ROCK signaling inhibition disrupted actin bundles and promoted leader cell formation.
- Notch1-Dll4 signaling negatively regulated multicellular actin bundle and leader cell development.
Conclusions:
- The study presents a versatile platform for studying 3D collective cell migration.
- ROCK and Notch1-Dll4 signaling pathways are essential regulators of 3D epithelial wound healing.
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