Get access

Dynamic Electromechanical Hydrogel Matrices for Stem Cell Culture

Authors

  • Han L. Lim,

    1. Department of Bioengineering, University of California, San Diego, 9500 Gilman Drive, MC-0442, La Jolla, CA 92093, USA
    Search for more papers by this author
  • Jessica C. Chuang,

    1. Department of Bioengineering, University of California, San Diego, 9500 Gilman Drive, MC-0442, La Jolla, CA 92093, USA
    Search for more papers by this author
  • Tuan Tran,

    1. Department of Bioengineering, University of California, San Diego, 9500 Gilman Drive, MC-0442, La Jolla, CA 92093, USA
    Search for more papers by this author
  • Aereas Aung,

    1. Department of Bioengineering, University of California, San Diego, 9500 Gilman Drive, MC-0442, La Jolla, CA 92093, USA
    Search for more papers by this author
  • Gaurav Arya,

    Corresponding author
    1. Department of Nanoengineering, University of California, San Diego, 9500 Gilman Drive, MC-0448, La Jolla, CA 92093, USA
    • Department of Nanoengineering, University of California, San Diego, 9500 Gilman Drive, MC-0448, La Jolla, CA 92093, USA.
    Search for more papers by this author
  • Shyni Varghese

    Corresponding author
    1. Department of Bioengineering, University of California, San Diego, 9500 Gilman Drive, MC-0442, La Jolla, CA 92093, USA
    • Department of Bioengineering, University of California, San Diego, 9500 Gilman Drive, MC-0442, La Jolla, CA 92093, USA
    Search for more papers by this author

Abstract

Hydrogels have numerous biomedical applications including synthetic matrices for cell culture and tissue engineering. Here we report the development of hydrogel based multifunctional matrices that not only provide three-dimensional structural support to the embedded cells but also can simultaneously provide potentially beneficial dynamic mechanical and electrical cues to the cells. A unique aspect of these matrices is that they undergo reversible, anisotropic bending dynamics in an electric field. The direction and magnitude of this bending can be tuned through the hydrogel crosslink density while maintaining the same electric potential gradient, allowing control over the mechanical strain imparted to the cells in a three-dimensional environment. The conceptual design of these hydrogels was motivated through theoretical modeling of the osmotic pressure changes occurring at the gel-solution interfaces in an electric field. These electro-mechanical matrices support survival, proliferation, and differentiation of stem cells. Thus, these new three-dimensional in vitro synthetic matrices, which mimic multiple aspects of the native cellular environment, take us one step closer to in vivo systems.

Ancillary