Objective
Autophagy, an intracellular degradation process, is an important defence mechanism against pathogenic bacteria, including the Gram-negative enteroinvasive human pathogen Shigella flexneri. Work has shown that septins, a component of the cytoskeleton that interacts with membranes, entrap cytosolic Shigella in cage-like structures for targeting to autophagy. However, the factors mediating septin cage formation are mostly unknown. The Mostowy lab has recently discovered that mitochondria are required for efficient septin cage assembly and that ~50% of entrapped Shigella are metabolically inactive. The precise fate of septin cage-entrapped bacterium (replication, persistence, death) remains to be defined. For my project, called INCAGE, I will reconstitute the septin cage in vitro and study host and bacterial factors that modulate septin assembly. I will purify septin complexes and reconstitute septin assemblies (filaments, rings, cages) in vitro, and investigate how auxiliary components (actin, mitochondria, endoplasmic reticulum) influence septin cage assembly. This will reveal how septins recognize bacteria and how they assemble into cage-like structures. In parallel, I will follow septin cage-entrapped Shigella at the level of the single cell to study the lethal action of septin caging and uncover mechanisms that enable bacterial survival. I will test if the subpopulation of septin cage entrapped bacteria that stay alive, can replicate or led to the formation of persister cells (transiently refractory to stress) able to cope with host imposed stress (antibiotics, autophagy). Completion of these objectives will identify factors that promote septin cage assembly and its lethal action against entrapped bacteria. In depth understanding of septin cage assembly and its antibacterial activity can reveal important information about septin biology and cell-autonomous immunity, and help to design novel approaches to counteract bacterial infections.
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 microbiology bacteriology
- medical and health sciences basic medicine pharmacology and pharmacy pharmaceutical drugs antibiotics
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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.
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H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions
MAIN PROGRAMME
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H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility
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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.
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.
MSCA-IF-EF-ST - Standard EF
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Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) H2020-MSCA-IF-2016
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Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
WC1E 7HT London
United Kingdom
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.