Project description
Rethinking brain signals for better health
When communication between brain cells falters, the consequences can be devastating, ranging from epilepsy and intellectual disability to speech impairments and psychiatric illnesses. Mutations in the GRIN2A gene, which encodes a subunit of the vital NMDA receptor, have been linked to these disorders. Yet, the precise mechanisms behind this dysfunction remain unclear. Supported by the Marie Skłodowska-Curie Actions programme, the Syn-to-Sum project is challenging long-held assumptions about how these receptors shape brain activity. Using genetically modified rat models, advanced electrophysiology, and calcium imaging, the project investigates how GluN2A subunit loss affects signal timing and processing in the hippocampus (the brain’s memory centre). By decoding this link, Syn-to-Sum aims to improve the futures for those living with GRIN2A-related conditions.
Objective
N-Methyl-D-Aspartate (NMDA) receptors, play a critical role in synaptic plasticity and are linked to various neurological disorders. Recent advancements in genetic sequencing have identified numerous variants in the GRIN2A gene, encoding the NMDAR receptor subunit GluN2A, to be associated with severe clinical outcomes, including intellectual disability, epileptic encephalopathy, speech and language impairments, and psychiatric illness. Yet, the specific mechanisms underlying the pathophysiology in these conditions remains elusive. Effective neuronal communication hinges on the precise coordination of synaptic signals. Conventionally, it is believed that the slow decay of NMDA receptor-mediated excitatory postsynaptic currents (EPSCs), is crucial for temporal summation and synaptic integration. However, my preliminary evidence from a Grin2a-depleted rat model challenges this view, suggesting that NMDA receptors do not contribute to the excitatory post synaptic potentials (EPSPs) of hippocampal pyramidal cells under physiological conditions. As such, this project seeks to further explore the impact of GluN2A depletion on temporal summation in inhibitory hippocampal cell populations. I will combine advanced electrophysiological techniques with ex vivo calcium imaging to assess how channel kinetics influence neuronal function, circuit plasticity and hippocampal network dynamics. Through this research, I aim to deepen our understanding of synaptic function, NMDA receptor physiology and the role of GluN2 subunit-conferred kinetics in neuronal computation and the sculpting of hippocampal network dynamics. By improving our understanding of how GRIN2A variants induce synaptic and network dysfunction, this research aims to provide novel insights into the pathogenesis of GRIN2A-associated disorders and identify novel targets for future development of targeted therapeutic interventions to improve the quality of life for affected individuals.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- medical and health sciences basic medicine physiology pathophysiology
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Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA)
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Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships
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Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) HORIZON-MSCA-2024-PF-01
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EH8 9YL Edinburgh
United Kingdom
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