Objective
Leukocyte recruitment is an important component of inflammatory and autoimmune disorders and consists of selectin-mediated rolling, the chemokine-induced activation of leukocytes, the integrin-dependent firm adhesion and the subsequent transendothelial migration. LFA-1 is an important leukocyte integrin mediating adhesion by binding to its endothelial counter-receptors ICAM-1 and -2. Whereas many adhesion receptors are known to promote leukocyte recruitment, very little information exists about endogenous inhibitors of the cascade. The lab of the applicant has recently identified the endothelial-derived secreted molecule Developmental Endothelial Locus-1 (Del-1, Edil3) as a potent endogenous inhibitor of the leukocyte adhesion cascade. Del-1 acted as an inhibitor of LFA-1-dependent leukocyte adhesion to the endothelium. Consistently, Del-1-/- mice displayed a pro-inflammatory phenotype with higher leukocyte recruitment in vivo.
Recently, we found that Del-1 expression is abundant in the immunoprivileged eye. In the first aim of the present project we plan to study the expression and functional contribution of Del-1 in models of eye inflammation. These studies may identify Del-1 as novel therapeutic approach in eye inflammation.
In addition, previous reports have demonstrated that Del-1 is elevated by tissue ischemia or hypoxia. Relative tissue hypoxia is a hallmark of acute inflammation. The mechanisms regulating the hypoxia-related anti-inflammatory response are not well understood. In the second aim of this project we will study whether Del-1 acts to regulate the hypoxia-related anti-inflammatory response. The pro-inflammatory effects of hypoxia in mice can be tested in models of ambient hypoxic exposure (e.g. 8% oxygen for 4-8 h) that induce increased permeability of endothelial and epithelial barriers e.g. lung and intestine, as well as enhanced recruitment of inflammatory cells.
In summary the present proposal will focus on characterizing further the fun
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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)
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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.
Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
FP7-PEOPLE-2010-RG
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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.
Coordinator
01069 Dresden
Germany
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.