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Nano-axo-syn SIGNED

Nanoscale organisation of axo-axonic synapses along the axon initial segment of cortical pyramidal neurons in health and disease.

Total Cost €


EC-Contrib. €






Project "Nano-axo-syn" data sheet

The following table provides information about the project.


Organization address
address: STRAND
city: LONDON
postcode: WC2R 2LS

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 212˙933 €
 EC max contribution 212˙933 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2019
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2020
 Duration (year-month-day) from 2020-04-01   to  2022-03-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    KING'S COLLEGE LONDON UK (LONDON) coordinator 212˙933.00


 Project objective

Neurons in the brain have extensive dendritic arbours that receive thousands of synaptic inputs all along it. The transformation of all these inputs to an output in a single neuron occurs through the integration of synaptic events and the generation of an action potential (AP) at the axon initial segment (AIS). The AIS, therefore, is the site that controls neuronal output by gating the generation of APs. It has been recently shown that this neuronal compartment can be reorganized following a change in neuronal activity and that this structural plasticity is associated with a change in neuronal excitability. In addition, the AIS of pyramidal neurons is innervated by a specific type of inhibitory interneuron, a Chandelier cell, that forms axo-axonic connections specifically with it. Therefore, the AIS can be seen as a short stretch of axon that brings together molecules critical for AP initiation (e.g. - voltage-gated channels) and synaptic proteins essential for the local modulation of excitability. The interplay between these two compartments at the nanoscale level is not known. At classical excitatory and inhibitory synapses, the nanoscale molecular organisation of synaptic proteins has been shown to be a key factor in modulating the efficiency of synaptic transmission between neurons. However, the precise molecular organisation of axo-axonic synapses is still poorly understood, as is its role in regulating neuronal output. We propose to decipher this organisation in mouse brain slices using the state-of-the-art super-resolution microscopy combined with electrophysiology. Once the nanoscopic arrangement elucidated, we will study how it is modified during activity-dependent forms of plasticity and how this, in turn, leads to changes in neuronal excitability. Finally, we will establish how this neuronal output hub is organized in a mouse model of schizophrenia in which synaptic transmission between pyramidal neurons and Chandelier cells is altered.

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The information about "NANO-AXO-SYN" are provided by the European Opendata Portal: CORDIS opendata.

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