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Somnostat SIGNED

The Homeostatic Regulation and Biological Function of Sleep

Total Cost €

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EC-Contrib. €

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Partnership

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 Somnostat project word cloud

Explore the words cloud of the Somnostat project. It provides you a very rough idea of what is the project "Somnostat" about.

energy    redox    subunit    validity    versa    signals    inducing    vital    electron    molecular    chemistry    point    independently    waking    silent    stress    nicotinamide    dozen    disease    biological    biophysics    rising    dfb    vice    brain    prerequisite    metabolism    active    disruptions    sleep    first    mammalian    drive    responsible    insights    strengthen    connection    cofactor    conductances    implicated    clear    hypothalamus    electrical    machinery    hyperkinetic    intrinsic    cell    lifespan    fluctuates    rho    universal    activates    persistently    synaptic    consequence    central    data    voltage    perturbing    gated    fan    excitability    mitochondrial    sandman    endocytosis    extraction    revealing    encoded    modulated    drosophila    showed    function    aging    oxidative    beta    shaped    dorsal    nature    relay    gtpase    autonomous    parallels    gained    cellular    regulated    neurons    channel    gtpases    mechanistic    potassium    responds    plasma    exist    leak    body    transducers    seek    switching    transport    mechanisms    understand    unknown    broad    pressure    bound    electrically    antagonistically    membrane    monitor    shaker    preliminary    question    respiration   

Project "Somnostat" data sheet

The following table provides information about the project.

Coordinator
THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD 

Organization address
address: WELLINGTON SQUARE UNIVERSITY OFFICES
city: OXFORD
postcode: OX1 2JD
website: www.ox.ac.uk

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country United Kingdom [UK]
 Total cost 2˙374˙999 €
 EC max contribution 2˙374˙999 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2018-ADG
 Funding Scheme ERC-ADG
 Starting year 2019
 Duration (year-month-day) from 2019-10-01   to  2024-09-30

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD UK (OXFORD) coordinator 2˙374˙999.00

Map

 Project objective

Sleep is vital and universal, but its biological function remains unknown. This project will seek to understand why we need to sleep by studying how the brain responds to sleep loss. My previous work in Drosophila showed that rising sleep pressure activates two dozen sleep-inducing neurons in the dorsal fan-shaped body (dFB) of the central complex. Sleep need is encoded in the electrical excitability of these neurons, which fluctuates because two potassium conductances, voltage-gated Shaker and the leak channel Sandman, are modulated antagonistically. As a consequence, dFB neurons are electrically silent during waking and persistently active during sleep. The key open question addressed in this project is the nature of the molecular changes that drive dFB neurons into the electrically active state. My preliminary data point to two dFB-intrinsic transducers of sleep pressure. First, the Shaker β subunit Hyperkinetic responds via a bound nicotinamide cofactor to oxidative by-products of mitochondrial electron transport, revealing a potential connection between energy metabolism, oxidative stress, and sleep, three processes implicated independently in lifespan, aging, and disease. To strengthen this connection, we will monitor sleep and the biophysics of dFB neurons after perturbing mitochondrial respiration or cellular redox chemistry and vice versa. Second, Rho GTPases relay currently unknown signals to the machinery responsible for the regulated endocytosis of Sandman, whose extraction from the plasma membrane is a prerequisite for switching the sleep-promoting activity of dFB neurons on. To identify these signals, we will investigate cell-autonomous, synaptic, and non-synaptic mechanisms of GTPase control. Because clear parallels exist between dFB neurons and sleep-active neurons in the mammalian hypothalamus, mechanistic insights that can currently be gained only in Drosophila are expected to have broad validity for understanding sleep and its disruptions.

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The information about "SOMNOSTAT" are provided by the European Opendata Portal: CORDIS opendata.

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