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NovelNMDA SIGNED

Novel NMDA receptor signaling in cortical synaptic depression

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EC-Contrib. €

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Partnership

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Project "NovelNMDA" data sheet

The following table provides information about the project.

Coordinator
UNIVERSITAETSMEDIZIN GOETTINGEN - GEORG-AUGUST-UNIVERSITAET GOETTINGEN - STIFTUNG OEFFENTLICHEN RECHTS 

Organization address
address: Robert-Koch-Strasse 40
city: GOETTINGEN
postcode: 37075
website: n.a.

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 Germany [DE]
 Total cost 1˙340˙544 €
 EC max contribution 1˙340˙544 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2018-STG
 Funding Scheme ERC-STG
 Starting year 2019
 Duration (year-month-day) from 2019-02-01   to  2024-01-31

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSITAETSMEDIZIN GOETTINGEN - GEORG-AUGUST-UNIVERSITAET GOETTINGEN - STIFTUNG OEFFENTLICHEN RECHTS DE (GOETTINGEN) coordinator 1˙340˙544.00

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 Project objective

Long-term synaptic plasticity is an experience dependent increase or decrease in synaptic signaling between nerve cells that can last from hours to days or even longer. It is thought to represent the cellular substrate of learning and memory by providing an information storage mechanism in the brain. At many excitatory synapses, plasticity-induction processes involve NMDA receptors, glutamate-gated ion channels. I recently discovered a new form of NMDA receptor signaling during spike-timing dependent long-term depression at layer-4-to-layer-2/3 synapses in rodent somatosensory cortex, which requires glutamate binding to the NMDA receptor but not ion flux through its channel. This non-ionic signaling mechanism via the NMDA receptor represents a strikingly overlooked signaling pathway at glutamatergic synapses, and its discovery may overturn much of the long-term depression field, which has focused on calcium influx through the NMDA receptors as the relevant signal in plasticity. Indeed, the discovery of non-ionic NMDA receptor signaling in the postsynaptic membrane even calls into question our current understanding of the basic properties of synaptic signaling.

By combining electrophysiology and two-photon imaging and uncaging, we will address the fundamental properties of non-ionic NMDAR dependent plasticity at cortical layer-4-to-layer-2/3 synapses, determine in which synaptic subcompartment plasticity occurs, assess whether signaling depends on a particular NMDA receptor subtype, and examine whether non-ionic NMDA receptor signaling represents a general mechanism at other glutamatergic synapses. This work will lead to a detailed functional understanding of the novel non-ionic NMDA receptor signaling process and its role in synapse function and plasticity.

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

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