TY - JOUR
T1 - A noninvasive approach to determine viscoelastic properties of an individual adherent cell under fluid flow
AU - Qiu, Jun
AU - Baik, Andrew D.
AU - Lu, X. Lucas
AU - Hillman, Elizabeth M.C.
AU - Zhuang, Zhuo
AU - Dong, Cheng
AU - Guo, X. Edward
N1 - Funding Information:
This work received the support from NIH/NIAMS grant ( RC1-AR058453 ) and China Postdoctoral Science Foundation grants ( 2012M520307 and 2013T60104 ). The first author was supported by the above grants and a fellowship from the China Scholarship Council .
PY - 2014/4/11
Y1 - 2014/4/11
N2 - Mechanical properties of cells play an important role in their interaction with the extracellular matrix as well as the mechanotransduction process. Several in vitro techniques have been developed to determine the mechanical properties of cells, but none of them can measure the viscoelastic properties of an individual adherent cell in fluid flow non-invasively. In this study, techniques of fluid-structure interaction (FSI) finite element method and quasi-3-dimensional (quasi-3D) cell microscopy were innovatively applied to the frequently used flow chamber experiment, where an adherent cell was subjected to fluid flow. A new non-invasive approach, with cells at close to physiological conditions, was established to determine the viscoelastic properties of individual cells. The results showed an instantaneous modulus of osteocytes of 0.49±0.11. kPa, an equilibrium modulus of 0.31±0.044. kPa, and an apparent viscosity coefficient of 4.07±1.23. kPa. s. This new quantitative approach not only provides an excellent means to measure cell mechanical properties, but also may help to elucidate the mechanotransduction mechanisms for a variety of cells under fluid flow stimulation.
AB - Mechanical properties of cells play an important role in their interaction with the extracellular matrix as well as the mechanotransduction process. Several in vitro techniques have been developed to determine the mechanical properties of cells, but none of them can measure the viscoelastic properties of an individual adherent cell in fluid flow non-invasively. In this study, techniques of fluid-structure interaction (FSI) finite element method and quasi-3-dimensional (quasi-3D) cell microscopy were innovatively applied to the frequently used flow chamber experiment, where an adherent cell was subjected to fluid flow. A new non-invasive approach, with cells at close to physiological conditions, was established to determine the viscoelastic properties of individual cells. The results showed an instantaneous modulus of osteocytes of 0.49±0.11. kPa, an equilibrium modulus of 0.31±0.044. kPa, and an apparent viscosity coefficient of 4.07±1.23. kPa. s. This new quantitative approach not only provides an excellent means to measure cell mechanical properties, but also may help to elucidate the mechanotransduction mechanisms for a variety of cells under fluid flow stimulation.
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U2 - 10.1016/j.jbiomech.2014.01.056
DO - 10.1016/j.jbiomech.2014.01.056
M3 - Article
C2 - 24581798
AN - SCOPUS:84896491779
SN - 0021-9290
VL - 47
SP - 1537
EP - 1541
JO - Journal of Biomechanics
JF - Journal of Biomechanics
IS - 6
ER -