- Open access
- Published:
Direct assessment of living cell mechanical responses during deformation inside microchannel restrictions
Biointerphases volume 6, pages 117–125 (2011)
Abstract
The deformation of suspended cells inside microchannel restrictions mimics passive cell transportation in the blood circulation system of the body. The cells traverse or get stuck in narrow vessels, as, e.g., during the metastasis of tumor cells. In this work, the mechanical responses of suspended pancreatic cancer cells as they move through and deform inside microchannel restrictions are assessed with a cantilever-based polydimethylsiloxane (PDMS) force sensor. Incorporated into a flow cell chip, the PDMS cantilever is integrated into the boundary wall of a narrow microrestriction. Upon being forced to enter the restriction by an applied flow, the cell exerts pressure on the cantilever, which then bends. By assuming a uniformly loaded cantilever, the total force and pressure on the cantilever can be calculated using elastic beam theory. This technique has the advantage of presenting an absolute and direct measure, which is independent of the applied flow and frictional processes at the channel-cell interface; in contrast to, e.g., measuring cell mechanics indirectly via cell sliding velocities. Furthermore, a high number of cells can be examined in a short time compared to other single cell mechanical testing devices.
References
J. P. Shelby, J. White, K. Ganesan, P. K. Rathod, and D. T. Chiu, Proc. Natl. Acad. Sci. U.S.A. 100,14618 (2003).
M. J. Rosenbluth, W. A. Lam, and D. A. Fletcher, Lab Chip 8, 1062 (2008).
S. Gabriele, A. M. Benoliel, P. Bongrand, and O. Theodoly, Biophys. J. 96, 4308 (2009).
H. W. Hou, Q. S. Li, G. Y. H. Lee, A. P. Kumar, C. N. Ong, and C. T. Lim, Biomed. Microdevices 11, 557 (2009).
P. Gassmann and J. Haier, Clin. Exp. Metastasis 25, 171 (2008).
M. L. Adams, M. L. Johnston, A. Scherer, and S. Quake, J. Micromech. Microeng. 15, 1517 (2005).
J. Loverich, I. Kanno, and A. Kotera, Microfluid. Nanofluid. 3, 427 (2007).
J. Guck et al., Biophys. J. 88, 3689 (2005).
R. M. Hochmuth, J. Biomech. 33, 15 (2000).
M. Lieber, J. Mazetta, W. Nelson-Rees, M. Kaplan, and G. Todaro, Int. J. Cancer 15, 741 (1975).
N. Caille, O. Thoumine, J. Tardy, and J. J. Meister, J. Biomech. 35, 177 (2002).
J. P. Jean, D. S. Gray, A. A. Spector, and C. S. Chen, J. Biomech. Eng. 126, 552 (2004).
M. J. Madou, Fundamentals in Microfabrication (CRC Press, Boca Raton, FL, 1997).
L. D. Landau and E. M. Lifshitz, Theory of Elasticity (Elsevier Butterworth-Heinemann, Oxford, 2005).
H. Hertz and J. Reine Angew. Math. 92, 156 (1881).
I. N. Sneddon, Int. J. Eng. Sci. 3, 47 (1965).
A. Torii, M. Sasaki, K. Hane, and S. Okuma, Meas. Sci. Technol. 7, 179 (1996).
J. P. Spatz, S. Sheiko, M. Möller, and O. Marti, Langmuir 13, 4699 (1997).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Walter, N., Micoulet, A., Seufferlein, T. et al. Direct assessment of living cell mechanical responses during deformation inside microchannel restrictions. Biointerphases 6, 117–125 (2011). https://doi.org/10.1116/1.3625258
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1116/1.3625258