How Stretch and Stiffness Affect Cell Behavior
Author Information
Author(s): Throm Quinlan, Angela M. Sierad, Andrew K. Capulli, Laura E. Firstenberg, Kristen L. Billiar
Primary Institution: Worcester Polytechnic Institute
Hypothesis
The application of cyclic stretch to cells cultured on soft hydrogels will induce responses commonly observed in cells cultured on stiff substrates.
Conclusion
Cells on soft substrates can spread similarly to those on stiff substrates when subjected to cyclic stretch.
Supporting Evidence
- Cells on soft substrates spread more when stretched compared to when they are not stretched.
- Valvular interstitial cells showed a significant increase in spread area when subjected to cyclic stretch.
- Human mesenchymal stem cells had a less pronounced response to stretch compared to valvular interstitial cells.
Takeaway
Cells can change their shape and behavior based on how stretchy or stiff their surroundings are, and stretching soft materials can make them act like stiff ones.
Methodology
Mammalian cells were cultured on polyacrylamide gels of varying stiffness and subjected to dynamic stretch to observe changes in cell behavior.
Limitations
The study primarily focused on 2D cultures, which may not fully represent 3D tissue environments.
Participant Demographics
Porcine aortic valve interstitial cells and human mesenchymal stem cells were used.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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