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AstroModulation SIGNED

Astroglial control of axonal excitability, adaptation and analogue signalling

Total Cost €

0

EC-Contrib. €

0

Partnership

0

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 AstroModulation project word cloud

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

axonal    fibre    transfer    mossy    presynaptic    glutamate    ca3    astrocytes    synapse    digital    play    either    signalling    poorly    regulate    hypothesis    tools   

Project "AstroModulation" data sheet

The following table provides information about the project.

Coordinator
UNIVERSITY COLLEGE LONDON 

Organization address
address: GOWER STREET
city: LONDON
postcode: WC1E 6BT
website: http://www.ucl.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 195˙454 €
 EC max contribution 195˙454 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2016
 Funding Scheme /MSCA-IF-EF-ST
 Starting year 2017
 Duration (year-month-day) from 2017-09-01   to  2019-08-31

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSITY COLLEGE LONDON UK (LONDON) coordinator 195˙454.00

Mappa

 Project objective

Evidence has been emerging for astrocytes to play an important role in neuronal cooperation and information processing in the brain. Recent work has suggested that their activity may even regulate the shape of action potentials in the axon and thus the efficacy of synaptic transmission. However, the underlying physiological machinery remains poorly understood. We propose here that astrocytes play an active role in the analogue-digital regulation of presynaptic signalling. To decipher the role of astroglia in presynaptic signalling, in particular analogue-digital axonal information transfer, we focus on the giant mossy-fibre-CA3 synapse, well characterized in the host laboratory. Our working hypothesis is that astrocytes regulate spike generation and propagation in axons by modulating local extracellular potassium and possibly by releasing glutamate. To test this hypothesis, an innovative set of technique will be used: i) direct recordings of astrocytes and either presynaptic or postsynaptic elements of the synapse in the mossy-fibre to CA3 synapse; ii) genetic tools allowing specific targeting and stimulation of either astrocytes or neurons; iii) pioneering imaging tools, such as FLIM, to directly measure the calcium entry and glutamate-sensing fluorescent reporter to reveal glutamate release by the astrocytes. The proposed project should unravel the mechanisms by which astrocytes control axonal information transfer in neural networks axonal excitability while shedding light on poorly understood features of astrocyte physiology.

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