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Content archived on 2024-06-18

Mechanism of centrosome positioning in HeLa cells

Objective

The Centrosome (CS) is an organelle located near the nucleus that constitutes the primary Microtubule Organization Center (MTOC) in animal cells. The distribution of the microtubule cytoskeleton is therefore determined by the localization of the CS. Localization of this organelle is important for many cellular processes: I) Cell shape and polarization[6], II) Cell migration and III) Cell cycle.

The processes underlying CS localization are mechanical, with two possible scenarios: I) Pushing forces may be generated at the tips of MTs growing from the centrosome against an object such an organelle, cell cortex or plasma membrane; II) Pulling forces may be generated by MTs that remain attach to the CS and their tips shrink against an object. Alternatively, force could be generated along the length or tip of MTs by motor proteins and may be transmitted to the CS. Both pushing and pulling forces have been demonstrated to play a role in different organisms, but how the net force on the CS is regulated in order to achieve proper positioning is still an important open question.

The aim of this project is to study CS positioning in HeLa cells. We will first determine if the dominant force involved in centrosome positioning is pushing or pulling and secondly, explore the different contributions of these forces. To achieve this goal, we will directly perturb the force balance on the CS by severing MTs with laser ablation.

Fields of science (EuroSciVoc)

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Topic(s)

Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.

Call for proposal

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FP7-PEOPLE-2011-IEF
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Funding Scheme

Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.

MC-IEF - Intra-European Fellowships (IEF)

Coordinator

MAX-PLANCK-GESELLSCHAFT ZUR FORDERUNG DER WISSENSCHAFTEN EV
EU contribution
€ 167 390,40
Address
HOFGARTENSTRASSE 8
80539 Munchen
Germany

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Region
Bayern Oberbayern München, Kreisfreie Stadt
Activity type
Research Organisations
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

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