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α-Catenin Dependent E-cadherin Adhesion Dynamics as Revealed by an Accelerated Force Ramp
Joshua Bush1,2, Jolene I Cabe3, Daniel Conway4
1Mechanical & Aerospace Engineering, Old Dominion University, Norfolk, VA 23529 USA.
Biorxiv : the Preprint Server for Biology
|August 30, 2023
Summary
E-cadherin adhesion strength and mobility are directly correlated, with alpha-catenin crucial for maintaining cell-cell contact stability. This study reveals how these dynamics regulate tissue remodeling.
Area of Science:
- Cell Biology
- Biophysics
- Biochemistry
Background:
- Cell-cell contact dynamics are vital for tissue remodeling and shape changes.
- Epithelial cell shape is regulated by E-cadherin adhesion dynamics, influenced by forces.
- The relationship between E-cadherin adhesion strength and mobility was previously unclear.
Approach:
- Magnetic pulling cytometry was used to apply force ramps on E-cadherin adhesions.
- This method allowed simultaneous measurement of adhesion strength and force-dependent mobility.
- E-cadherin dynamics were investigated in alpha-catenin knockout epithelial cells.
Key Points:
- A direct correlation was found between E-cadherin adhesion strength and force-dependent mobility.
- Alpha-catenin knockout cells exhibited reduced adhesion strength and increased mobility.
- Alpha-catenin is essential for the recovery of strained cell-cell contacts.
Conclusions:
- Adhesion strength and force-dependent mobility of E-cadherin adhesions work together to maintain cell-cell contact homeostasis.
- Alpha-catenin plays a critical morphological role in regulating E-cadherin adhesion dynamics.
- This study presents a novel method for relating force-dependent adhesion mobility to adhesion strength.
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