Project description
The role of mitochondrial proteins in cell fitness
Although mitochondria – the powerhouses of the cell – contain a separate mitochondrial genome, most mitochondrial proteins are encoded by nuclear genes. They are thus synthesised in the cytosol as precursor proteins and subsequently imported to mitochondria. The working hypothesis of the EU-funded MitoCyto project is that during their cytosolic residence, mitochondrial precursor proteins may affect cellular homeostasis. Considering that aberrant accumulation of cytosolic proteins is a hallmark of ageing and neurodegeneration, researchers aim to elucidate the interactions of mitochondrial cytosolic precursors and how they may affect eukaryotic cell fitness. MitoCyto will offer fundamental insight into cell biology; moreover, project results will also have relevance for conditions other than ageing.
Objective
Mitochondria are made of 800 to 1500 proteins which represent up to 30% of the cellular mass. Owing to their post-translational mode of import, mitochondrial precursor proteins explore the cytosol before they are imported into mitochondria. These reactions are of utmost importance for cellular functionality since cytosolic precursors pose a major threat of cellular proteostasis and are major drivers in aging and for the pathogenesis of neurodegenerative diseases. Still, the biology of cytosolic precursors is largely elusive.
In vitro import assays governed the experimentation platform of the mitochondrial community which enabled exquisite breakthroughs in understanding translocation, but are unsuited to elucidate cytosolic reactions. MitoCyto aims to break out of these experimental walls to elucidate the biology of cytosolic precursors with an interdisciplinary research team that leaves the comfort zone of biochemistry to utilize genetic and cell biology approaches but also develops novel cutting-edge techniques from high throughput approaches, through microfluidics-assisted microscopy to synthetic biology. From this innovative combination, detailed mechanistic insights into three so far largely elusive aspects of cell biology will be possible for the first time: (1) What are the cytosolic interactors of mitochondrial precursor proteins? (2) What are the direct and indirect physiological consequences of cytosolic precursor accumulation? (3) How does the re-routing of mitochondrial proteins to the nucleus control growth and fitness of eukaryotic cells?
We are convinced that MitoCyto will break grounds to a comprehensive understanding of how eukaryotic cells maintain a healthy proteome over a lifetime despite fluctuating metabolic conditions. While these goals are conceptually deeply rooted in a comprehensive understanding of basic biological questions, they are of immediate relevance for cancer cell metabolism, neurodegeneration and aging.
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.
- natural sciences biological sciences neurobiology
- natural sciences biological sciences biochemistry biomolecules proteins proteomics
- natural sciences physical sciences optics microscopy
- medical and health sciences clinical medicine oncology
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Keywords
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.1.1 - European Research Council (ERC)
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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.
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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.
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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) ERC-2021-ADG
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67663 Kaiserslautern
Germany
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