Objective
Nitric oxide (NO) is an essential signalling molecule for diverse physiological and disease processes. The current paradigm of how NO production is regulated focuses at the level of nitric oxide synthase (NOS), with respect to substrate and co-factor availability and the precise spatial and temporal arrangement of protein complexes. However, the respective unique or combined genetic deficiencies of the NOS isoforms exhibit relatively modest phenotypes in mice. Moreover, approaches targeted at modulating NOS activities have not successfully translated into different disease applications. All NOS isoforms are dependent on arginine as their sole substrate and interestingly, only one enzyme in mammals argininosuccinic lyase (ASL), can generate endogenous arginine. We propose that global regulation of NO production occurs earlier at the step of regulating arginine substrate availability within the cell. Until now, regulation at the level of arginine availability has been under-appreciated since arginine is readily available from external and dietary sources, irrespective of endogenous cellular production. However, extracellular arginine levels can affect NO production even though the intracellular levels of arginine are saturated.
In humans, the natural history of argininosuccinic aciduria caused by deficiency of ASL shows systemic and chronic features that reflect in part global dysregulation of NO homeostasis. This led us to discover that ASL is required for the channelling of both endogenously synthesized arginine and exogenous arginine to NOS. By challenging the existing paradigm, I hypothesize that regulating ASL would allow us to characterize the cellular and molecular mechanisms underlying NO flux regulation at normal and pathological conditions, for therapeutic applications. This proposal is hence novel both in its concept but also in its approach that is based on targeting therapy for systemic disorders through regulating cellular metabolism.
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: https://op.europa.eu/en/web/eu-vocabularies/euroscivoc.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: https://op.europa.eu/en/web/eu-vocabularies/euroscivoc.
- humanities history and archaeology history
- natural sciences biological sciences zoology mammalogy
- medical and health sciences basic medicine physiology homeostasis
- natural sciences biological sciences biochemistry biomolecules proteins enzymes
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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.
Topic(s)
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.
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.
Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
ERC-2013-CoG
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Funding Scheme
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.
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.
Host institution
7610001 Rehovot
Israel
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.