Coupling structure to dynamics in crosslinked actin- microtubule composites

ORAL

Abstract

Microtubules and actin are cytoskeletal filaments that shape the cell and play an important role in cell mobility and division. Both cytoskeletal filaments have distinct flexibilities and organizations in the cell that enable the production of work and resilience of the composite network. We seek to use such composite networks as a scaffold for smart materials with exciting properties such as self-healing and tunable stiffness. In order to use this network, we need to characterize the networks as a function of composition and crosslinking. We characterize the network structure visually using two color confocal microscopy to scan through the materials in 3D. We also measure the dynamics using the intensity fluctuations of the microtubules and the actin networks over time, the temporal autocorrelation, and fluorescence recovery after photobleaching. Networks with both malleability and elastic resilience will be useful as scaffolds for novel composite materials.

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Presenters

  • Leila Farhadi

    University of Massachusetts Amherst, University of Massachusetts, Amherst

Authors

  • Leila Farhadi

    University of Massachusetts Amherst, University of Massachusetts, Amherst

  • Shea Ricketts

    University of San Diego, Physics, University of San Diego

  • Bekele Gurmessa

    Physics, University of San Diego

  • Michael Rust

    University of Chicago, Molecular Genetics and Cell Biology Institute for Genomics and Systems Biology, University of chicago

  • Moumita Das

    School of Physics and Astronomy, Rochester Institute of Technology, Rochester Institute of Technology, physics, Rochester Instituted of Technology, Department of Physics, Rochester institute of technology

  • Jennifer Ross

    University of Massachusetts Amherst, University of Massachusetts, Amherst, Department of Physics, University of Massachusetts, Amherst, Physics, University of Massachusetts Amherst

  • Rae Robertson-Anderson

    University of San Diego, Physics, University of San Diego, Physics and Biophysics, University of San Diego