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The Paluch Lab
The cell cortex is a network of actin, myosin and associated proteins that lies under the plasma membrane and determines the shape of most animal cells. The cortex enables the cell to resist externally applied stresses and to exert mechanical work. As such, it plays a role in normal physiology during events involving cell deformation such as mitosis, cytokinesis, and cell locomotion, and in the pathophysiology of diseases such as cancer where cortical contractility is upregulated. Despite its importance, little is known about how the cortex is assembled and regulated. As the cortex is an intrinsically mechanical structure - its biological activity results from its ability to contract and to exert forces - its physiological properties cannot be understood in isolation from its mechanics. The main focus of the group is to understand how these mechanical properties are determined by the molecular components of the cortex and how these properties are regulated, locally and globally, to allow the cell to undergo deformations, particularly during cytokinesis and migration. We combine cell biology, quantitative imaging and physical modelling to investigate: The regulation of the architecture of the cortical network and of the resulting cellular mechanical properties; The role of cortex mechanics during cell shape changes, particularly during cytokinesis and migration; The formation and function of different protrusion types (blebs and lamellipodia) during migration in vivo and in 3-dimensionnal environments.
2 Researchers
  • MRC/UCL Lab for Molecular Cell Bio
    extResource/image/01/IMASP77
  • MRC/UCL Lab for Molecular Cell Bio
    extResource/image/01/EPALU00
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