AI Article Synopsis
- The paper presents a mechanical stimulation device for studying how cells respond to physical forces, using a pneumatic system to apply equiaxial strain to cells on a PDMS membrane.
- The device allows real-time observation of cells and was tested with different coating materials, ultimately selecting gelatin to enhance cell attachment for further experiments.
- Results showed that human pluripotent stem cells thrived on the device, and mechanical stretching successfully induced cardiac differentiation, paving the way for future research on how stretching affects cell behavior and related cardiac conditions.
Article Abstract
This paper introduces a compact mechanical stimulation device suitable for applications to study cellular mechanobiology. The pneumatically controlled device provides equiaxial strain for cells on a coated polydimethylsiloxane (PDMS) membrane and enables real time observation of cells with an inverted microscope. This study presents the implementation and operation principles of the device and characterizes membrane stretching. Different coating materials are also analyzed on an unstretched membrane to optimize the cell attachment on PDMS. As a result, gelatin coating was selected for further experiments to demonstrate the function of the device and evaluate the effect of long-term cyclic equiaxial stretching on human pluripotent stem cells (hPSCs). Cardiac differentiation was induced with mouse visceral endoderm-like (END-2) cells, either on an unstretched membrane or with mechanical stretching. In conclusion, hPSCs grew well on the stretching platform and cardiac differentiation was induced. Thus, the platform provides a new possibility to study the effect of stretching on cellular properties including differentiation and stress induced cardiac diseases.
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| http://dx.doi.org/10.1016/j.medengphy.2013.09.008 | DOI Listing |
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