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Updated: Jan 31, 2026
09:15
Stem Cell Transplantation in an in vitro Simulated Ischemia/Reperfusion Model
Published on: November 5, 2011
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A computational simulation of cyclic stretch of an individual stem cell using a nonlinear model
Esmaeel Rahimpour1, Bahman Vahidi1, Zahra Mollahoseini1
1Division of Biomedical Engineering, Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran.
Journal of Tissue Engineering and Regenerative Medicine
|December 18, 2018
Summary
This study introduces a new hyper-viscoelastic model to predict cellular mechanical responses to cyclic strain, aiding stem cell differentiation. The model accurately estimates forces on biological molecules, crucial for understanding stem cell behavior.
Area of Science:
- Biomedical Engineering
- Cellular Mechanics
- Stem Cell Biology
Background:
- Mechanical stimuli, such as cyclic strains, are recognized for their role in promoting stem cell differentiation.
- Accurate detection of cellular mechanical responses is essential for optimizing differentiation efficiency.
Purpose of the Study:
- To validate a novel hyper-viscoelastic model for predicting cellular mechanical responses.
- To determine the stress levels required for specific stem cell responses under cyclic strain.
Main Methods:
- Utilized a finite element method to simulate a single mesenchymal stem cell in a fibrin hydrogel under 10% cyclic strain at 1 Hz.
- Employed a multiscale model incorporating integrins, based on Simo's model.
Main Results:
- The model predicted maximum forces of 24, 45, and 15 pN for circumferential, radial, and shear forces, respectively, on biological molecules.
- Calculated forces within the cytoskeleton correlate with distinct cellular responses.
Conclusions:
- The developed model accurately predicts mechanical forces influencing stem cell differentiation.
- Findings provide a basis for understanding stem cell differentiation into fibrochondrocytes and designing experiments.
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