CRACKING THE CODE BEHIND MITOTIC FIDELITY the roles of tubulin post translation...
CRACKING THE CODE BEHIND MITOTIC FIDELITY the roles of tubulin post translational modifications and a chromosome separation checkpoint
During the human lifetime 10000 trillion cell divisions take place to ensure tissue homeostasis and several vital functions in the organism. Mitosis is the process that ensures that dividing cells preserve the chromosome number of...
ver más
¿Tienes un proyecto y buscas un partner? Gracias a nuestro motor inteligente podemos recomendarte los mejores socios y ponerte en contacto con ellos. Te lo explicamos en este video
Proyectos interesantes
PRECISE
Spatiotemporal regulation of chromosome segregation fidelity
1M€
Cerrado
MolStruKT
Molecular structure and cell cycle regulated assembly of the...
1M€
Cerrado
TRIPOLES
Using first-principle modeling to study multipolar mitotic s...
146K€
Cerrado
PGC2018-096976-B-I00
ORGANIZACION AND FUNCION DE LOS MICROTUBULOS RANGTP DEPENDIE...
212K€
Cerrado
KINCON
Molecular bases of kinetochore microtubule attachment and th...
3M€
Cerrado
MITDYN
Studies on the role of Plk1 localization and activity in the...
100K€
Cerrado
Información proyecto CODECHECK
Duración del proyecto: 83 meses
Fecha Inicio: 2016-07-19
Fecha Fin: 2023-06-30
Fecha límite de participación
Sin fecha límite de participación.
Descripción del proyecto
During the human lifetime 10000 trillion cell divisions take place to ensure tissue homeostasis and several vital functions in the organism. Mitosis is the process that ensures that dividing cells preserve the chromosome number of their progenitors, while deviation from this, a condition known as aneuploidy, represents the most common feature in human cancers. Here we will test two original concepts with strong implications for chromosome segregation fidelity. The first concept is based on the tubulin code hypothesis, which predicts that molecular motors read tubulin post-translational modifications on spindle microtubules. Our proof-of-concept experiments demonstrate that tubulin detyrosination works as a navigation system that guides chromosomes towards the cell equator. Thus, in addition to regulating the motors required for chromosome motion, the cell might regulate the tracks in which they move on. We will combine proteomic, super-resolution and live-cell microscopy, with in vitro reconstitutions, to perform a comprehensive survey of the tubulin code and the respective implications for motors involved in chromosome motion, mitotic spindle assembly and correction of kinetochore-microtubule attachments. The second concept is centered on the recently uncovered chromosome separation checkpoint mediated by a midzone-associated Aurora B gradient, which delays nuclear envelope reformation in response to incompletely separated chromosomes. We aim to identify Aurora B targets involved in the spatiotemporal regulation of the anaphase-telophase transition. We will establish powerful live-cell microscopy assays and a novel mammalian model system to dissect how this checkpoint allows the detection and correction of lagging/long chromosomes and DNA bridges that would otherwise contribute to genomic instability. Overall, this work will establish a paradigm shift in our understanding of how spatial information is conveyed to faithfully segregate chromosomes during mitosis.