472994 Acitve Toroids

Thursday, November 17, 2016: 9:15 AM
Union Square 23 & 24 (Hilton San Francisco Union Square)
Ya-Wen Chang1, Ricardo Cruz2, Alexandros Fragkopoulos1, Andres Garcia3 and Alberto Fernandez-Nieves1, (1)School of Physics, Georgia Institute of Technology, Atlanta, GA, (2)Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA, (3)Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA

The study of multicellular sheets is of great interest because of their important role in tissue development, morphogenesis, and wound healing. In confluent layer of epithelia at sufficiently high densities, cells coordinate their behavior and can collectively respond to physical and chemical stimuli. For example, heterogeneity of tissue tension within a planar 2D monolayer has been shown to correlate with the collective cell migration pattern as well as with the local increase in cell proliferation. However, much less is known about how cells respond to out-of-plane curvatures that are on the order of 1 to 100 cell lengths. Here, we investigate the proliferation and structure of MDCK on toroidal hydrogel substrates; unlike spherical or planar substrates, toroidal substrates have regions of both positive and negative Gaussian curvature. We can control the range of curvature via tuning the size and aspect ratio of the hydrogel torus, allowing us to explore the relation between substrate curvature, cell arrangement, and cell proliferation.

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See more of this Session: Active Colloidal Systems
See more of this Group/Topical: Engineering Sciences and Fundamentals