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Tissue Morphogenesis: Take a Step Back and Relax!
Petra Stockinger1, Jérôme Solon1
1Cell and Developmental Biology Programme, Centre for Genomic Regulation (CRG), Barcelona Institute of Science and Technology, Dr. Aiguader 88, Barcelona 08003, Spain; Universitat Pompeu Fabra (UPF), Barcelona 08003, Spain.
Current Biology : CB
|August 23, 2017
Summary
A new study reveals that cytohesins are key to epithelial relaxation during stretching. These proteins locally inhibit actomyosin contractility at cell junctions, allowing tissues to relax.
Area of Science:
- Cell Biology
- Molecular Biology
- Tissue Mechanics
Background:
- Epithelial tissues undergo mechanical stress and exhibit relaxation responses.
- Understanding the molecular underpinnings of tissue relaxation is crucial for regenerative medicine and disease research.
Purpose of the Study:
- To identify the molecular mechanism driving epithelial relaxation in response to mechanical stretch.
- To elucidate the role of specific proteins in regulating actomyosin contractility during tissue deformation.
Main Methods:
- The study likely involved in vitro experiments on epithelial cell cultures.
- Techniques may include live-cell imaging, biochemical assays, and genetic manipulation to assess protein function.
Main Results:
- A molecular mechanism involving cytohesins was identified as responsible for epithelial relaxation.
- Cytohesins were shown to locally inhibit actomyosin contractility specifically at cellular junctions.
- This localized inhibition facilitates the overall relaxation of the epithelium under stretch.
Conclusions:
- Cytohesins play a critical role in the mechanotransduction pathway that leads to epithelial relaxation.
- Targeting cytohesin activity could offer novel therapeutic strategies for conditions involving epithelial tissue remodeling or dysfunction.
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