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ChromoCellDev

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Chromosome Architecture and the Fidelity of Mitosis during Development

Genome stability relies on accurate partition of the genome during nuclear division. Proper mitosis, in turn, depends on changes in chromosome organization, such as chromosome condensation and sister chromatid cohesion. Despite th... ver más

30/09/2021

FUNDACAO CALOUSTE...

1M€

Presupuesto del proyecto: 1M€

Líder del proyecto

FUNDACAO CALOUSTE GULBENKIAN No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Fecha límite participación Sin fecha límite de participación.

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Financiación concedida El organismo H2020 notifico la concesión del proyecto el día 2021-09-30

ERC-StG-2014: ERC Starting Grant

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Cerrada hace 10 años

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2 Participantes

FUNDACAO CALOUSTE GULBENKIAN

1.49M€ | Lider

GRUPO INTERMARK 96

333.04K€ | Participante

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Duración del proyecto: 73 meses Fecha Inicio: 2015-08-18
Fecha Fin: 2021-09-30

Líder del proyecto

FUNDACAO CALOUSTE GULBENKIAN No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 1M€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto Genome stability relies on accurate partition of the genome during nuclear division. Proper mitosis, in turn, depends on changes in chromosome organization, such as chromosome condensation and sister chromatid cohesion. Despite the importance of these structural changes, chromatin itself has been long assumed to play a rather passive role during mitosis and chromosomes are usually compared to a corpse at a funeral: they provide the reason for the proceedings but do not take an active part in them. (Mazia, 1961). Recent evidence, however, suggests that chromosomes play a more active role in the process of their own segregation. The present proposal tests the active chromosome hypothesis by investigating how chromosome morphology influences the fidelity of mitosis. I will use innovative methods for acute protein inactivation, developed during my postdoctoral studies, to evaluate the role of two key protein complexes involved in mitotic chromosome architecture - Condensins and Cohesins. Using a multidisciplinary approach, combining acute protein inactivation, 3D-live cell imaging and quantitative methods, I propose to investigate the role of mitotic chromosomes in the fidelity of mitosis at three different levels. The first one will use novel approaches to uncover the process of mitotic chromosome assembly, which is still largely unknown. The second will explore how mitotic chromosomes take an active part in mitosis by examining how chromosome condensation and cohesion influence chromosome movement and the signalling of the surveillance mechanisms that control nuclear division. Lastly we will evaluate how mitotic errors arising from abnormal chromosome structure impact on development. We aim to evaluate, at the cellular and organism level, how the cell perceives such errors and how (indeed if) they tolerate mitotic abnormalities. By conceptually challenging the passive chromosome view this project has the potential to redefine the role of chromatin during mitosis.

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