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Hypothalamic circuits for the selection of defensive and mating behavior in fema...

Hypothalamic circuits for the selection of defensive and mating behavior in females Social interactions can take different courses depending on the internal state of the participants. For instance, a sexually receptive female mouse will allow a male’s attempt to mount her, but a non-receptive female will fight or... ver más

29/02/2024

FUNDACAO CHAMPALIM...

2M€

Presupuesto del proyecto: 2M€

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

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Financiación concedida El organismo H2020 notifico la concesión del proyecto el día 2024-02-29

ERC-2017-COG: ERC Consolidator Grant

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Cerrada hace 7 años

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No hay información privada compartida para este proyecto. Habla con el coordinador.

2 Participantes

FUNDACAO CHAMPALIMAUD

1.95M€ | Lider

ZAYER

537.15K€ | Participante

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Duración del proyecto: 72 meses Fecha Inicio: 2018-02-13
Fecha Fin: 2024-02-29

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 2M€

Descripción del proyecto Social interactions can take different courses depending on the internal state of the participants. For instance, a sexually receptive female mouse will allow a male’s attempt to mount her, but a non-receptive female will fight or flee the same male. Here, we propose to determine how neuronal circuits in the female mouse brain support flexible, state-dependent interactions with male conspecifics. It is known that female receptivity depends on the ventrolateral region of the ventromedial hypothalamus. Within this region there is a population of neurons that expresses receptors for the sex hormone progesterone (PR+ neurons), whose levels cycle with reproductive state. In pilot experiments, we found that PR+ neurons are not homogeneous: some respond during receptive behaviors but others respond during defensive or aggressive behaviors. Our main objective is to determine how female hypothalamic PR+ neurons participate in state-dependent behavioral responses to males. Our hypothesis is that two subpopulations of PR+ neurons are differentially modulated by the reproductive cycle and that each sub-population activates a different downstream circuit, one specialized for receptive and the other for defensive behaviors. Our specific aims are to: (1) characterize the functional selectivity of individual female PR+ neurons across the reproductive cycle; (2) map the connectivity of PR+ neurons to their output targets; (3) test the impact of different PR+ output pathways by genetically activating and silencing them; and (4) determine how reproductive hormones modulate the synaptic and intrinsic functional properties of PR+ neurons. These studies will elucidate the neuronal circuit mechanisms of a biologically essential female behavior. More broadly, this work will reveal mechanisms by which neuronal circuits can support flexible state-dependent adaptive behaviors.

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