Abstract |
The shape of eukaryotic cells is determined by structural proteins (such as
actin) collectively known as the cytoskeleton. For example, localized
assembly of filamentous actin (F-actin) leads to protrusion of parts of the
cell outwards, whereas activation of myosin powers contraction. Here I will
talk about our recent mathematical modeling of cellular signaling. We study
the signaling that regulates the assembly of F-actin, and the resultant
effects on dynamics of cell shape, cell motility, and single-cell wound
healing. I will describe how we used ordinary and partial differential
equations to investigate the activities of regulatory proteins (small
GTPases) that regulate the cytoskeleton, and how our methods helped to gain
insight into mechanisms underlying experimentally observed cellular
behaviour.
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