Imaris Learning: Modelling and Analysis of Collective Cell Migration

Modelling and Analysis of Collective Cell Migration

June 2016

Abstract: A long-standing question in collective cell migration has been what might be the relative advantage of forming a cluster over migrating individually. Does an increase in the size of a collectively migrating group of cells enable them to sample the chemical gradient over a greater distance because the difference between front and rear of a cluster would be greater than for single cells?

We combined theoretical modelling with experiments to study collective migration of the border cells in-between nurse cells in the Drosophila egg chamber. We discovered that cluster size is positively correlated with migration speed, up to a particular point above which speed plummets. This may be due to the effect of viscous drag from surrounding nurse cells together with confinement of all of the cells within a stiff extracellular matrix. The model predicts no relationship between cluster size and velocity for cells moving on a flat surface, in contrast to movement within a 3D environment. Our analyses also suggest that the overall chemo attractant profile in the egg chamber is likely to be exponential, with the highest concentration in the oocyte.

This webinar will provide insights into collective chemotaxis by combining theoretical modeling with experimentation.

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