Role of actomyosin organisation in tissue morphogenesis and repair

Shiladitya Banerjee (primary)
Physics & Astronomy
University College London
Yanlan Mao (secondary)
Laboratory for Molecular Cell Biology
University College London

Abstract

Animal cell shapes are regulated by the intracellular actomyosin cytoskeleton, a dynamic network of actin filaments and myosin motors. The aim of this project is to quantitatively understand how these cytoskeletal machineries organize in space and time to regulate tissue morphogenesis and repair. This will be achieved by developing an in silico model of the actin cytoskeleton, integrating molecular biochemistry, structure and mechanics. The model will be used to interpret and direct mechanical experiments on the Drosophila wing disc, combining genetics, live imaging and automated image analysis. Together, these approaches will determine how actomyosin structures dynamically reorganize to control tissue-scale mechanics.


References

  1. Biomechanical regulation of contractility: spatial control and dynamics. Levayer R and Lecuit T (2012) Trends in Cell Biology 22(2), 61-81.
  2. Disordered actomyosin networks are sufficient to produce cooperative and telescopic contractility. Linsmeier, I., Banerjee, S., Oakes, P.W., Jung, W., Kim, T., & Murrell, M.P. (2016) Nature Communications 7, 12615.
  3. A versatile framework for simulating the dynamic mechanical structure of cytoskeletal networks. Freedman, S., Banerjee, S., Hocky, G.M., & Dinner, A.R. arXiv:1609.05202 (2017) Biophysical Journal In revision.
  4. Cooperativity between medial myosin contractile machineries enables heterogeneous tissue patterning. Blackie L, Tozluoglu M, Banerjee S, Mao Y, & Pichaud F (2017). Under review in EMBO Journal.
  5. Polarization of Myosin II refines tissue material properties to buffer mechanical stress. Duda, M. … Mao Y (2017). Under review at Dev Cell

BBSRC Area
Genes, development and STEM* approaches to biology
Area of Biology
Cell BiologyDevelopment
Techniques & Approaches
BiochemistryBiophysicsEngineeringGeneticsImage ProcessingMathematics / StatisticsMicroscopy / ElectrophysiologySimulation / Modelling