考虑细胞外基质黏弹性行为的细胞黏附力学模型

程波; 徐峰

doi:10.21656/1000-0887.420259

考虑细胞外基质黏弹性行为的细胞黏附力学模型

doi: 10.21656/1000-0887.420259

程波^1,2,
徐峰^1,2, ,

1. 西安交通大学生命科学与技术学院生物医学信息工程教育部重点实验室，西安 710049;
2. 西安交通大学仿生工程与生物力学研究所，西安 710049

基金项目:

11761161004

12002262）

国家自然科学基金（11972280

详细信息

作者简介:
程波（1988—），男，助理教授，博士(E-mail: chenbo8874@163.com);徐峰（1980—），男，教授，博士(通讯作者. E-mail: fengxu@mail.xjtu.edu.cn).

通讯作者:
徐峰（1980—），男，教授，博士(通讯作者. E-mail: fengxu@mail.xjtu.edu.cn).

中图分类号: O39
计量
- 文章访问数: 907
- HTML全文浏览量: 227
- PDF下载量: 96
- 被引次数: 0
出版历程
- 收稿日期: 2021-08-31
- 修回日期: 2021-09-23
- 刊出日期: 2021-10-01

A Molecular Clutch Model of Cellular Adhesion on Viscoelastic Substrate

CHENG Bo^1,2,
XU Feng^{1,2
, ,}

1. The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an 710049, P.R.China;
2. Bioinspired Engineering and Biomechanics Center (BEBC), Xi’an Jiaotong University, Xi’an 710049, P.R.China

Funds:

11761161004

12002262)

The National Natural Science Foundation of China(11972280

摘要

摘要: 细胞外基质由大量胶原蛋白和纤维蛋白组成，这些基质蛋白形成复杂的交联网络状结构，具有黏弹性力学特性.研究表明，黏弹性基质能显著影响细胞迁移、增殖和分化等生理行为，还能影响癌症转移和组织纤维化等疾病的发生与发展.然而，细胞感知细胞外基质黏弹性力学特性的分子机制仍不清楚.该文通过建立细胞黏附力学模型，从分子层次揭示细胞黏附在细胞响应外界黏弹性力学微环境中的作用.结果表明，细胞能通过调控细胞黏附动力学（包括黏附周期和黏附形成时间）响应细胞外基质的黏弹性力学特性.通过将模型计算结果与实验现象相比较，验证了模型的正确性.细胞黏附力学模型将为组织工程中细胞力学微环境的构建奠定理论基础.
- 黏弹性 /
- 力信号传导 /
- 细胞黏附 /
- 力学微环境
Abstract: The viscoelastic nature of the microenvironment of a cell is critical to cell mechanobiology, and modulates the mechanical feedback between cells and extracellular matrix. However, the mechanisms underlying the ways that cells actively sense and respond to a viscoelastic microenvironment remain elusive. We therefore developed a molecular clutch model of cell traction to predict the effects of substrate viscoelasticity on the dynamics of focal adhesions connecting the intracellular actin cytoskeleton to a viscoelastic substrate. The model predicts that certain levels of viscoelastic damping can increase cell tractions on relatively compliant substrates, and that this damping reduces cell tractions on relatively stiff substrates. The model predictions are qualitatively consistent well with reported experimental observations. The model offers physical insights into the role of substrate viscoelasticity on cell tractions and cell spreading.
- Viscoelasticity /
- mechanotransduction /
- cell adhesion /
- mechanical microenvironment

HTML全文

参考文献(19)

SCHOEN I, PRUITT BL, VOGEL V. The Yin-Yang of rigidity sensing: how forces and mechanical properties regulate the cellular response to materials[J].Annual Review of Materials Research,2013,43: 589-618.

[2]CHAUDHURI O, LUO G, KLUMPERS D, et al. Hydrogels with tunable stress relaxation regulate stem cell fate and activity[J].Nature Materials,2016,15(3): 326-334.

[3]CHAUDHURI O, KOSHY S T, CUNHA C D. Extracellular matrix stiffness and composition jointly regulate the induction of malignant phenotypes in mammary epithelium[J].Nature Materials,2014,13(10): 970-978.

[4]DALBY MJ, GADEGAARD N, OREFFO R O. Harnessing nanotopography and integrin-matrix interactions to influence stem cell fate[J].Nature Materials,2014,13: 558-69.

[5]TRAPPMANN B, GAUTROT J, CONNELLY J, et al. Extracellular-matrix tethering regulates stem-cell fate[J].Nature Materials,2012,11(7): 642-649.

[6]CASE L B, WATERMAN C M. Integration of actin dynamics and cell adhesion by a three-dimensional, mechanosensitive molecular clutch[J].Nature Cell Biology,2015,17(8): 955-963.

[7]NING L, LU S, YAN Z, et al. Mechanokinetics of receptor-ligand interactions in cell adhesion[J].Acta Mechanica Sinica,2015,31: 248-258.

[8]CHENG B, LIN M, HUANG G, et al. Cellular mechanosensing of the biophysical microenvironment: a review of mathematical models of biophysical regulation of cell responses[J].Physics of Life Reviews,2017,22/23: 88-119.

[9]CHENG B, LIN M, HUANG G, et al. Energetics: an emerging frontier in cellular mechanosensing: reply to comments on “cellular mechanosensing of the biophysical microenvironment: a review of mathematical models of biophysical regulation of cell responses”[J].Physics of Life Reviews,2017,22/23: 130-135.

[10]MARUTHAMUTHU V, SABASS B, SCHWARZ U S, et al. Cell-ECM traction force modulates endogenous tension at cell-cell contacts[J].Proceedings of the National Academy of Sciences of the United States of America,2011,108(12): 4708-4713.

[11]KOCH T M, STEFAN M, NAVID B, et al. 3D traction forces in cancer cell invasion[J].Plos One,2012,7(3): e33476. DOI:10.1371/ journal.pone.0033476.

[12]CHAN C E, ODDE D J. Traction dynamics of filopodia on compliant substrates[J].Science,2008,322: 1687-1691.

[13]BANGASSER B L, ROSENFELD S, ODDE D J. Determinants of maximal force transmission in a Motor-Clutch model of cell traction in a compliant microenvironment[J].Biophysical Journal,2013,105(3): 581-592.

[14]BANGASSER B L, ODDE D J. Master equation-based analysis of a motor-clutch model for cell traction force: cellular and molecular bioengineering [J].Cell Mol Bioeng,2013, 6(4): 449-459.

[15]BANGASSER B L, SHAMSAN G A, CHAN C E, et al. Shifting the optimal stiffness for cell migration[J].Nature Communications,2017,8: 15313.

[16]CHENG B, LIN M, LI Y, et al. An integrated stochastic model of matrix-stiffness-dependent filopodial dynamics[J].Biophysical Journal,2016,111(9): 2051-2061.

[17]GEERLIGS M, PETERS G W, ACKERMANS P A, et al. Linear viscoelastic behavior of subcutaneous adipose tissue[J].Biorheology,2008,45: 677-688.

[18]BABAEI B, ABRAMOWITCH S D, ELSON E L, et al. A discrete spectral analysis for determining quasi-linear viscoelastic properties of biological materials[J].Journal of the Royal Society Interface,2015,12(113): 20150707.

[19]CHAUDHURI O, GU L, DARNELL M, et al. Substrate stress relaxation regulates cell spreading[J].Nature Communications,2015,6: 6365.

施引文献

资源附件(0)

访问统计

计量

文章访问数: 907
HTML全文浏览量: 227
PDF下载量: 96
被引次数: 0

姓名
邮箱
手机号码
标题
留言内容
验证码

留言板

考虑细胞外基质黏弹性行为的细胞黏附力学模型

doi: 10.21656/1000-0887.420259

作者简介:
程波（1988—），男，助理教授，博士(E-mail: chenbo8874@163.com);徐峰（1980—），男，教授，博士(通讯作者. E-mail: fengxu@mail.xjtu.edu.cn).

通讯作者:
徐峰（1980—），男，教授，博士(通讯作者. E-mail: fengxu@mail.xjtu.edu.cn).

计量

A Molecular Clutch Model of Cellular Adhesion on Viscoelastic Substrate

计量

目录

留言板

考虑细胞外基质黏弹性行为的细胞黏附力学模型

doi: 10.21656/1000-0887.420259

作者简介: 程波（1988—），男，助理教授，博士(E-mail: chenbo8874@163.com);徐峰（1980—），男，教授，博士(通讯作者. E-mail: fengxu@mail.xjtu.edu.cn).

通讯作者: 徐峰（1980—），男，教授，博士(通讯作者. E-mail: fengxu@mail.xjtu.edu.cn).

计量

出版历程

A Molecular Clutch Model of Cellular Adhesion on Viscoelastic Substrate

计量

出版历程

目录

作者简介:
程波（1988—），男，助理教授，博士(E-mail: chenbo8874@163.com);徐峰（1980—），男，教授，博士(通讯作者. E-mail: fengxu@mail.xjtu.edu.cn).

通讯作者:
徐峰（1980—），男，教授，博士(通讯作者. E-mail: fengxu@mail.xjtu.edu.cn).