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Chin. Phys. B, 2018, Vol. 27(11): 116201    DOI: 10.1088/1674-1056/27/11/116201
Special Issue: SPECIAL TOPIC — 80th Anniversary of Northwestern Polytechnical University (NPU)
SPECIAL TOPIC—80th Anniversary of Northwestern Polytechnical University (NPU) Prev   Next  

Effect of elasticity mismatch on cell deformation and migration: A phase-field study

Yuanfeng Yin(尹元枫)1,2, Hui Xing(邢辉)1,2, Duyang Zang(臧渡洋)1,2, Kexin Jin(金克新)1,2
1 MOE Key Laboratory of Material Physics and Chemistry under Extraordinary, Northwestern Polytechnical University, Xi'an 710129, China;
2 Shaanxi Key Laboratory for Condensed Matter Structure and Properties, Northwestern Polytechnical University, Xi'an 710129, China
Abstract  

The phase-field model for cell migration is used to study the effect of elasticity mismatch on the migration dynamics of multiple cells in a confluent monolayer, where one tagged cell is embedded by a number of normal cells and both types of cells are supposed to have the same properties except elasticity. Our results show that a larger elasticity mismatch leads to a larger difference in shape change between the tagged cell and the normal cells. We find that the bursts of velocity always fall behind the peak of the perimeter, and the shape change of the tagged cell results in the accelerated motion of the tagged cell in the whole process. Moreover, the variation of the averaging cell perimeter ratio Ltag/Lnormal with the increase of the elasticity ratio γtag/γnormal for different active velocities|va|is analyzed. We find that Ltag/Lnormal decreases with the increase of γtag/γnormal, following a simple power law function. Our results highlight the important role played by the cell elasticity mismatch in cell deformation and migration.

Keywords:  cell migration      elastic mismatch      phase-field simulations  
Received:  06 July 2018      Revised:  27 August 2018      Accepted manuscript online: 
PACS:  62.20.D- (Elasticity)  
  62.20.F- (Deformation and plasticity)  
  64.70.qd (Thermodynamics and statistical mechanics)  
Fund: 

Project supported by the National Natural Science Foundation of China (Grant Nos. 51701160 and U1732129) and the Fundamental Research Funds for the Central Universities, China (Grant No. 3102018zy046).

Corresponding Authors:  Hui Xing     E-mail:  huixing@nwpu.edu.cn

Cite this article: 

Yuanfeng Yin(尹元枫), Hui Xing(邢辉), Duyang Zang(臧渡洋), Kexin Jin(金克新) Effect of elasticity mismatch on cell deformation and migration: A phase-field study 2018 Chin. Phys. B 27 116201

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