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Reshaping cortical circuits to decrease binge eating

Obesity and eating disorders are critical problems in society. Many patients with these brain diseases cope with stress by ravenous food intake (binge eating), which engenders new stress and maintains the pathology. Evidence-based... ver más

30/06/2025

UMC UTRECHT

1M€

Presupuesto del proyecto: 1M€

Líder del proyecto

UNIVERSITAIR MEDISCH CENTRUM UTRECHT No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Ver 2 Participantes

Financiación concedida El organismo H2020 notifico la concesión del proyecto el día 2018-10-25

ERC-2018-STG: ERC Starting Grant

I+D

Cerrada hace 7 años

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2 Participantes

UMC UTRECHT

1.50M€ | Lider

AUGURE SPAIN

349.77K€ | Participante

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Duración del proyecto: 80 meses Fecha Inicio: 2018-10-25
Fecha Fin: 2025-06-30

Líder del proyecto

UNIVERSITAIR MEDISCH CENTRUM UTRECHT No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 1M€

Descripción del proyecto Obesity and eating disorders are critical problems in society. Many patients with these brain diseases cope with stress by ravenous food intake (binge eating), which engenders new stress and maintains the pathology. Evidence-based treatments for this are urgently needed, but their implementation is hindered by a knowledge gap on: (i) which stress-driven neural disruptions cause binge eating, and (ii) whether these neural circuit changes can be normalized for therapeutic gain. Studies in humans and rodents link binge eating to dysfunction of the prefrontal cortex (PFC), a brain region orchestrating the stress response. However, it is unknown how effects of stress on PFC output cause binge eating. The PFC prominently innervates the lateral hypothalamus (LHA), a region with a crucial role in managing food intake, yet little is known about the function of PFC regulation of the LHA. I predict that stress-induced binge eating requires a functional reorganization of prefrontal cortical control over lateral hypothalamus feeding circuits, and that this control can be restored to limit binge eating. I propose a cutting-edge threefold strategy to address these hypotheses in mouse models: 1. I will unravel the make-up of PFC-LHA circuitry, combining electrophysiology, optogenetics and neural tracing. I will assess how stress functionally alters this complex network. 2. I will determine the concurrent activity at multiple sites within PFC-LHA circuitry as mice engage in stress-driven binge eating, using fiber photometric calcium recordings. 3. I will assess if normalizing stress-altered PFC-LHA synapses rebalances this circuitry in vivo and limits binge eating. For this I will combine optogenetic plasticity protocols, with fiber photometric measurements in freely moving mice. Overall, this challenging project aims to unravel the unclear neurobiology of stress-induced binge eating. If successful, this would provide a key advance in understanding binge eating pathologies.

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