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PolarizeMe SIGNED

Feeling Polarity: Integrating intracellular mechanics and forces for a biophysical understanding of epithelial polarity

Total Cost €

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EC-Contrib. €

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Partnership

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Project "PolarizeMe" data sheet

The following table provides information about the project.

Coordinator
WESTFAELISCHE WILHELMS-UNIVERSITAET MUENSTER 

Organization address
address: SCHLOSSPLATZ 2
city: Munster
postcode: 48149
website: www.uni-muenster.de/en/

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Germany [DE]
 Total cost 1˙995˙564 €
 EC max contribution 1˙995˙564 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2017-COG
 Funding Scheme ERC-COG
 Starting year 2018
 Duration (year-month-day) from 2018-03-01   to  2023-02-28

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    WESTFAELISCHE WILHELMS-UNIVERSITAET MUENSTER DE (Munster) coordinator 1˙995˙564.00

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 Project objective

Epithelial polarity is one of the most fundamental types of cellular organization, and correct cellular polarization is vital for all epithelial tissue. Failure to establish polarity leads to severe phenotypes, from catastrophic developmental deficiencies to life-threatening diseases such as cancer. Despite knowing much about the signalling and trafficking machinery vital for polarity, we lack quantitative knowledge about the intracellular mechanical processes which organize and stabilize epithelial polarity. This presents a critical knowledge gap, as any elaborated understanding of intracellular organization needs to include the forces and viscoelastic mechanical properties that position organelles and proteins. As such, the main aim of POLARIZEME is to determine the intracellular mechanical processes relevant for epithelial polarization, thus providing a mechanical understanding of polarity. We will combine advanced optical tweezers technology with cutting-edge molecular biology tools to rigorously test new intracellular transport concepts such as the active, diffusion-like forces that can position organelles or the recently introduced cortical actin flows that can drag polarity-defining proteins around the cell. Thus we propose (i) to quantify active forces and intracellular mechanics and their relation to organelle positioning, (ii) to quantify polarized cortical and cytoplasmic flows, and (iii) to measure the forces and mechanical obstacles relevant for direct vesicle trafficking. These quantitative biophysics experiments will be supported by mathematical modelling and the development of two new instruments which (a) allow for automated intracellular mechanics measurements over extended time periods and (b) combine multi-view light-sheet microscopy with optical tweezers and UV ablation. Overall, we will provide a new access to understand and describe polarity by merging the physical and biological aspects of its initiation, maintenance and stability.

 Publications

year authors and title journal last update
List of publications.
2019 Hervé Turlier, Timo Betz
Unveiling the Active Nature of Living-Membrane Fluctuations and Mechanics
published pages: 213-232, ISSN: 1947-5454, DOI: 10.1146/annurev-conmatphys-031218-013757
Annual Review of Condensed Matter Physics 10/1 2019-09-18

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