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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Ozcelikkale, Altug Dutton, Craig Han, Bumsoo |
| Copyright Year | 2013 |
| Abstract | During cryopreservation, ice forms in the extracellular space resulting in freezing-induced deformation of the tissue, which can be detrimental to the extracellular matrix (ECM) microstructure. Meanwhile, cells dehydrate through an osmotically driven process as the intracellular water is transported to the extracellular space, increasing the volume of fluid for freezing. Therefore, this study examines the effects of cellular presence on tissue deformation and investigates the significance of intracellular water transport and cell-ECM interactions in freezing-induced cell-fluid-matrix interactions. Freezing-induced deformation characteristics were examined through cell image deformetry (CID) measurements of collagenous engineered tissues embedded with different concentrations of MCF7 breast cancer cells versus microspheres as their osmotically inactive counterparts. Additionally, the development of a biophysical model relates the freezing-induced expansion of the tissue due to the cellular water transport and the extracellular freezing thermodynamics for further verification. The magnitude of the freezing-induced dilatation was found to be not affected by the cellular water transport for the cell concentrations considered; however, the deformation patterns for different cell concentrations were different suggesting that cell-matrix interactions may have an effect. It was, therefore, determined that intracellular water transport during freezing was insignificant at the current experimental cell concentrations; however, it may be significant at concentrations similar to native tissue. Finally, the cell-matrix interactions provided mechanical support on the ECM to minimize the expansion regions in the tissues during freezing. |
| Starting Page | 091001 |
| Ending Page | 091012 |
| Page Count | 12 |
| File Format | |
| ISSN | 01480731 |
| e-ISSN | 15288951 |
| Journal | Journal of Biomechanical Engineering |
| Volume Number | 135 |
| Issue Number | 9 |
| DOI | 10.1115/1.4024571 |
| Language | English |
| Publisher | The American Society of Mechanical Engineers |
| Publisher Date | 2013-07-10 |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Biological tissues Cryonics Deformation Fluids Freezing Ice Temperature Water |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physiology (medical) Biomedical Engineering |
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