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Content archived on 2024-06-18

Visualizing the Early Events of Shigella Invasion at the Molecular and Cellular Level

Objective

A key step of Shigella infection is the invasion of epithelial cells of the human colon. The contact with host cells triggers the injection of bacterial effector proteins into the host cells via the type III secretion system (T3SS). The effectors induce massive cytoskeletal remodelling (actin foci). This drives localized membrane ruffling and lamellipodial extensions that envelop and internalize the bacteria. We will investigate at molecular resolution and in three dimensions (3D) how the successive steps of the invasion process are spatially and temporally coordinated. Specifically, we will address where and how the secreting T3SS needles interact with the host cell membrane, how they trigger a spatially- organized signaling response within the host cells, and how the underlying cytoskeleton re-organizes in proximity to the entering bacterium. This will be achieved via correlative light electron microscopy (CLEM) and correlative light electron tomography (CLET). Altogether, our data will illuminate Shigella invasion process at the molecular level and in 3D. Apart from addressing important biological questions, this project will also provide me with the “know-how” of innovative technological tools to study individual events that will be extremely valuable for my success as an independent researcher in the field of host-pathogen interactions.

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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.

Call for proposal

Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.

FP7-PEOPLE-2009-IEF
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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.

MC-IEF - Intra-European Fellowships (IEF)

Coordinator

INSTITUT PASTEUR
EU contribution
€ 166 145,60
Address
RUE DU DOCTEUR ROUX 25-28
75724 Paris
France

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Region
Ile-de-France Ile-de-France Paris
Activity type
Research Organisations
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Total cost

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.

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