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A new class of microtubules in the spindle exerting forces on kinetochores - NewSpindleForce

Glavni istraživač

Kategorija
H2020
Iznos financiranja
16232500
HRK
Datum početka
1.4.2015.
Datum završetka
31.3.2020.
Status
Završen
Više informacija

At the onset of division the cell forms a spindle, a micro-machine made of microtubules, which divide the chromosomes by pulling on kinetochores, protein complexes on the chromosome. The central question in the field is how accurate chromosome segregation results from the interactions between kinetochores, microtubules and the associated proteins.

According to the current paradigm, the forces on kinetochores are produced by k-fibers, bundles of microtubules extending between the spindle pole and the kinetochore. The proposed project is built upon a hypothesis that a new class of microtubules, which we term bridging microtubules, bridge sister kinetochores.

We are taking an interdisciplinary approach by combining laser microsurgery with genetic perturbations, quantitative measurements of the responses and comparison with theoretical models. Understanding the role of bridging microtubules in force generation and chromosome movements will not only shed light on the mechanism of chromosome segregation, but may also increase the potential of mitotic anticancer strategies, as the spindle is a major target for chemotherapy.

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