Abstract
Cell interactions with the extracellular matrix (ECM) are critical to cell and tissue functions involving adhesion, communication, and differentiation. Three-dimensional (3D) in vitro culture systems are an important approach to mimic in vivo cell–matrix interactions for mechanobiology studies and tissue engineering applications. This chapter describes the use of engineered microtissues as 3D constructs in combination with a magnetic tissue gauge (μTUG) system to analyze tissue mechanical properties. The μTUG system is composed of poly(dimethylsiloxane) (PDMS) microwells with vertical pillars in the wells. Self-assembled microtissues containing cells and ECM gel can form between the pillars, and generate mechanical forces that deform the pillars, which provides a readout of those forces. Herein, detailed procedures for microfabrication of the PDMS μTUG system, seeding and growth of cells with ECM gels in the microwells, and measurements of the mechanical properties of the resulting microtissues via magnetic actuation of magnetic sphere-tagged μTUGs are described.
References
Chen CS, Tan J, Tien J (2004) Mechanotransduction at cell-matrix and cell-cell contacts. Annu Rev Biomed Eng 6:275–302
Hynes RO (2002) Integrins: bidirectional, allosteric signaling machines. Cell 110:673–687
Schwartz MA, Ginsberg MH (2002) Networks and crosstalk: integrin signalling spreads. Nat Cell Biol 4:E65–E68
Ciobanasu C, Faivre B, Le Clainche C (2013) Integrating actin dynamics, mechanotransduction and integrin activation: the multiple functions of actin binding proteins in focal adhesions. Eur J Cell Biol 92:339–348
Schiller HB, Fassler R (2013) Mechanosensitivity and compositional dynamics of cell-matrix adhesions. EMBO Rep 14:509–519
Kuo JC (2013) Mechanotransduction at focal adhesions: integrating cytoskeletal mechanics in migrating cells. J Cell Mol Med 17:704–712
Wozniak MA, Chen CS (2009) Mechanotransduction in development: a growing role for contractility. Nat Rev Mol Cell Biol 10:34–43
Schmeichel KL, Bissell MJ (2003) Modeling tissue-specific signaling and organ function in three dimensions. J Cell Sci 116:2377–2388
Shamir ER, Ewald AJ (2014) Three-dimensional organotypic culture: experimental models of mammalian biology and disease. Nat Rev Mol Cell Biol 15:647–664
Legant WR, Pathak A, Yang MT, Deshpande VS, McMeeking RM, Chen CS (2009) Microfabricated tissue gauges to measure and manipulate forces from 3D microtissues. Proc Natl Acad Sci U S A 106:10097–10102
Legant WR, Chen CS, Vogel V (2012) Force-induced fibronectin assembly and matrix remodeling in a 3D microtissue model of tissue morphogenesis. Integr Biol 4:1164–1174
Zhao R, Boudou T, Wang WG, Chen CS, Reich DH (2013) Decoupling cell and matrix mechanics in engineered microtissues using magnetically actuated microcantilevers. Adv Mater 25:1699–1705
Zhao R, Boudou T, Wang WG, Chen CS, Reich DH (2014) Magnetic approaches to study collective 3D cell mechanics in long-term cultures (invited). J Appl Phys 115:172616
Zhao R, Chen CS, Reich DH (2014) Force-driven evolution of mesoscale structure in engineered 3D microtissues and the modulation of tissue stiffening. Biomaterials 35:5056–5064
Liu AS, Wang H, Copeland CR, Chen CS, Shenoy VB, Reich DH (2016) Matrix viscoplasticity and its shielding by active mechanics in a microtissue model: in situ experiments and mathematical modeling. Sci Rep 6:33919
Sakar MS, Eyckmans J, Pieters R, Eberli D, Nelson BJ, Chen CS (2016) Cellular forces and matrix assembly coordinate fibrous tissue repair. Nat Commun 7:11036
Xu F, Zhao R, Liu AS, Metz T, Shi Y, Bose P, Reich DH (2015) A microfabricated magnetic actuation device for mechanical conditioning of arrays of 3D microtissues. Lab Chip 15:2496–2503
Zhao R, Simmons CA (2012) An improved texture correlation algorithm to measure substrate–cytoskeletal network strain transfer under large compressive strain. J Biomech 45:76–82
Sage D, Neumann FR, Hediger F, Gasser SM, Unser M (2005) Automatic tracking of individual fluorescence particles: application to the study of chromosome dynamics. IEEE Trans Image Process 14:1372–1383
Crocker JC, Grier DG (1996) Methods of digital video microscopy for colloidal studies. J Colloid Interface Sci 179:298–310
Saltzman WM, Parkhurst MR, Parsons-Wingerter P, Zhu WH (1992) Three-dimensional cell cultures mimic tissues. Ann N Y Acad Sci 665:259–273
Acknowledgements
This work was supported by NSF Grants CMMI-1463011 (JHU) and CMMI-1462710 (BU). C.Y.H. acknowledges support from the Ministry of Science of Technology of Taiwan’s Postdoctoral Research Abroad Program grant number 105-2917-I-564-003-A1.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2018 Springer Science+Business Media, LLC
About this protocol
Cite this protocol
Bose, P., Huang, C.Y., Eyckmans, J., Chen, C.S., Reich, D.H. (2018). Fabrication and Mechanical Properties Measurements of 3D Microtissues for the Study of Cell–Matrix Interactions. In: Boheler, K., Gundry, R. (eds) The Surfaceome. Methods in Molecular Biology, vol 1722. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-7553-2_18
Download citation
DOI: https://doi.org/10.1007/978-1-4939-7553-2_18
Published:
Publisher Name: Humana Press, New York, NY
Print ISBN: 978-1-4939-7551-8
Online ISBN: 978-1-4939-7553-2
eBook Packages: Springer Protocols