Multiscale mechanical simulations of cell compacted collagen gels.

作者: Maziar Aghvami , V. H. Barocas , E. A. Sander

DOI: 10.1115/1.4024460

关键词:

摘要: Engineered tissues are commonly stretched or compressed (i.e., conditioned) during culture to stimulate extracellular matrix (ECM) production and improve the mechanical properties of growing construct. The relationships between stimulation ECM remodeling, however, complex, interdependent, dynamic. Thus, theoretical models required for understanding underlying phenomena so that conditioning process can be optimized produce functional engineered tissues. Here, we continue our development multiscale by simulating effect cell tractions on developing isometric tension redistributing forces in surrounding fibers a collagen gel embedded with explants. model predicted patterns fiber reorganization were similar those observed experimentally. Furthermore, inclusion compaction also changed distribution strains compared acellular case, particularly regions around cells where highest found.

参考文章(53)
David Stopak, Albert K. Harris, Connective tissue morphogenesis by fibroblast traction: I. Tissue culture observations Developmental Biology. ,vol. 90, pp. 383- 398 ,(1982) , 10.1016/0012-1606(82)90388-8
Guy M. Genin, Teresa M. Abney, Tetsuro Wakatsuki, Elliot L. Elson, Cell-Cell Interactions and the Mechanics of Cells and Tissues Observed in Bioartificial Tissue Constructs Mechanobiology of Cell-Cell and Cell-Matrix Interactions. pp. 75- 103 ,(2011) , 10.1007/978-1-4419-8083-0_5
E.A. Sander, A.M. Stein, M.J. Swickrath, V.H. Barocas, Out of Many, One: Modeling Schemes for Biopolymer and Biofibril Networks Springer, Dordrecht. pp. 557- 602 ,(2010) , 10.1007/978-1-4020-9785-0_19
A. Pathak, S. Kumar, Independent regulation of tumor cell migration by matrix stiffness and confinement Proceedings of the National Academy of Sciences of the United States of America. ,vol. 109, pp. 10334- 10339 ,(2012) , 10.1073/PNAS.1118073109
Ling Gao, Yiemeng Hoi, Daniel D. Swartz, John Kolega, Adnan Siddiqui, Hui Meng, Nascent Aneurysm Formation at the Basilar Terminus Induced by Hemodynamics Stroke. ,vol. 39, pp. 2085- 2090 ,(2008) , 10.1161/STROKEAHA.107.509422
M.F. Hadi, E.A. Sander, J.W. Ruberti, V.H. Barocas, Simulated remodeling of loaded collagen networks via strain-dependent enzymatic degradation and constant-rate fiber growth. Mechanics of Materials. ,vol. 44, pp. 72- 82 ,(2012) , 10.1016/J.MECHMAT.2011.07.003
Edward A. Sander, Triantafyllos Stylianopoulos, Robert T. Tranquillo, Victor H. Barocas, Image-based biomechanics of collagen-based tissue equivalents IEEE Engineering in Medicine and Biology Magazine. ,vol. 28, pp. 10- 18 ,(2009) , 10.1109/MEMB.2009.932486
A.L Sieminski, R.P Hebbel, K.J Gooch, The relative magnitudes of endothelial force generation and matrix stiffness modulate capillary morphogenesis in vitro Experimental Cell Research. ,vol. 297, pp. 574- 584 ,(2004) , 10.1016/J.YEXCR.2004.03.035
Leonard M. Sander, Alignment Localization in Nonlinear Biological Media Journal of Biomechanical Engineering-transactions of The Asme. ,vol. 135, pp. 071006- ,(2013) , 10.1115/1.4024199