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https://hdl.handle.net/10356/103697
Title: | Mechanical fatigue of human red blood cells | Authors: | Qiang, Yuhao Liu, Jia Dao, Ming Suresh, Subra Du, E. |
Keywords: | Mechanical Fatigue Of Biological Cells Mechanical Fatigue Of Erythrocytes Engineering::Materials |
Issue Date: | 2019 | Source: | Qiang, Y., Liu, J., Dao, M., Suresh, S., & Du, E. Mechanical fatigue of human red blood cells. Proceedings of the National Academy of Sciences, 201910336-. doi:10.1073/pnas.1910336116 | Series/Report no.: | Proceedings of the National Academy of Sciences | Abstract: | Fatigue arising from cyclic straining is a key factor in the degradation of properties of engineered materials and structures. Fatigue can also induce damage and fracture in natural biomaterials, such as bone, and in synthetic biomaterials used in implant devices. However, the mechanisms by which mechanical fatigue leads to deterioration of physical properties and contributes to the onset and progression of pathological states in biological cells have hitherto not been systematically explored. Here we present a general method that employs amplitude-modulated electrodeformation and microfluidics for characterizing mechanical fatigue in single biological cells. This method is capable of subjecting cells to static loads for prolonged periods of time or to large numbers of controlled mechanical fatigue cycles. We apply the method to measure the systematic changes in morphological and biomechanical characteristics of healthy human red blood cells (RBCs) and their membrane mechanical properties. Under constant amplitude cyclic tensile deformation, RBCs progressively lose their ability to stretch with increasing fatigue cycles. Our results further indicate that loss of deformability of RBCs during cyclic deformation is much faster than that under static deformation at the same maximum load over the same accumulated loading time. Such fatigue-induced deformability loss is more pronounced at higher amplitudes of cyclic deformation. These results uniquely establish the important role of mechanical fatigue in influencing physical properties of biological cells. They further provide insights into the accumulated membrane damage during blood circulation, paving the way for further investigations of the eventual failure of RBCs causing hemolysis in various hemolytic pathologies. | URI: | https://hdl.handle.net/10356/103697 http://hdl.handle.net/10220/49988 |
ISSN: | 0027-8424 | DOI: | 10.1073/pnas.1910336116 | Schools: | School of Chemical and Biomedical Engineering School of Materials Science & Engineering |
Rights: | © 2019 The Author(s). Published by PNAS. This open access article is distributed under Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND). | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
Appears in Collections: | MSE Journal Articles SCBE Journal Articles |
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Mechanical fatigue of human red blood cells.pdf | 1.54 MB | Adobe PDF | View/Open |
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