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IPLS/BioP Seminar: Dr. David Zwicker (MPI Goettingen)

11 November 2020, 2:00 pm–3:00 pm

David Zwicker

Title: Controlling phase separation in biological cells

Event Information

Open to

All

Organiser

IPLS

Location

Online on Zoom
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Abstract: Phase separation has emerged as an essential concept for the spatial organization inside cells. In particular, phase separation explains how droplets can form spontaneously to create subcellular compartments. However, traditional theories of phase separation cannot explain how cells could control these droplets. To unveil part of this mystery, I will present two different mechanisms used by cells in this talk. I will first discuss chemical reactions that influence the physical properties of droplet components. Driving such reactions by exploiting the non-equilibrium environment of biological cells can stabilize multiple droplets and control their size. I will then focus on the elastic properties surrounding droplets, e.g., provided by the cytoskeleton. I will show that stiffness gradients, which are present in heterogeneous environments like cells, can influence the positioning of droplets and thus determine their overall arrangement. These two examples demonstrate that heterogeneous, living cells can regulate the size, number, and position of their droplets. Moreover, similar mechanisms may allow controlling droplets in technical applications in the future.

Host: Andela Saric (a.saric@ucl.ac.uk)

Please contact Jas Gill-Thind (j.gill-thind@ucl.ac.uk) if you do not already have the details to join the Zoom meeting.

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About the Speaker

Dr. David Zwicker

at MPI Goettingen

More about Dr. David Zwicker