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NeuroContext

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The impact of genetic background in the activity of single neurons

Behaviors are quantitative traits, influenced by natural genetic variants in many different genes. Ultimately, polymorphisms impact the activity of single neurons to modify behavior. However, studies to dissect neuronal circuits a... ver más

31/08/2023

FUNDACAO CHAMPALIM...

160K€

Presupuesto del proyecto: 160K€

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FUNDACAO D. ANNA DE SOMMER CHAMPALIMAUD E DR.... No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

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Financiación concedida El organismo H2020 notifico la concesión del proyecto el día 2023-08-31

WF-03-2020: Widening Fellowships

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Duración del proyecto: 28 meses Fecha Inicio: 2021-04-01
Fecha Fin: 2023-08-31

Líder del proyecto

FUNDACAO D. ANNA DE SOMMER CHAMPALIMAUD E DR.... No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 160K€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto Behaviors are quantitative traits, influenced by natural genetic variants in many different genes. Ultimately, polymorphisms impact the activity of single neurons to modify behavior. However, studies to dissect neuronal circuits are performed in a single genetic background, without the genetic context where they evolved. In this action, I propose to study neuronal activity in a more natural genetic context, by manipulating the activity of single neurons and measuring the resulting impact on behavior in several genetic backgrounds. This will allow determining how robust are neural circuits to genetic perturbation and identifying polymorphisms that modulate neuronal activity at the single neuron resolution. To study the impact of genetic background in neuronal activity, I will use D.melanogaster, which offer versatile genetic tools to manipulate activity of single neurons, resources for rapid analysis of population genetics and robust behavioral assays. One conserved behavior that flies share with many other species is the freeze or flee response to threats. Many aspects of this behavior have been dissected in flies, including the role of descending neurons (DNs), which connect the brain to motor centers. In here, I will inhibit the activity of DNs previously shown to impact the freezing behavior in response to looming stilmuli. This will be performed in several genetic backgrounds, using a collection of inbreed lines with fully sequenced genomes. With this, I will identify polymorphisms that interact with the action of single DNs, trough genome wide association study (GWAS). The candidate genes from this analysis will be tested for their role in modulating the neuronal activity. NeuroContext will elucidate how genetic polymorphisms, present in natural populations, interact with the activity of single neurons. This will greatly impact the future research in neurosciences, by informing on how genetic backgrounds have to be considered in research programmes.

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