Objective
Bone development and homeostasis must incontestably rely on a correct spatial positioning of osteoblasts to generate bone at appropriate sites. A failure of osteoblasts to reach the sites in need of bone formation may contribute to impaired fracture repair and osteoporosis. Conversely, uncontrolled osteogenic cell movement may play a role in diseases involving aberrant placement of bone. Mechanisms of osteoblastic migration and adhesion may even be mimicked by bone-metastasizing tumor cells. Yet, the trafficking of osteogenic cells has been a largely neglected aspect in bone biology. My recent studies abroad for the first time shed light on this process in vivo. Newly generated transgenic mouse models for osteoblast lineage tracing revealed that specifically osteoprogenitors, and not mature osteoblasts, moved to initiate novel sites of bone formation. Intriguingly, osteoprogenitors entered developing and healing bones along with their neovascularization, some being wrapped as pericytes around the blood vessels, suggesting an unprecedented vessel-guided cell movement mechanism.
Implementing these concepts and models, I here propose two angles to elucidate the mechanisms mediating osteoprogenitor motility. In a first approach, we will assess the involvement, in vitro and in vivo, of known candidate molecular targets of (i) cell-matrix interactions pivotal in cell migration, (ii) cell-cell adhesion, and (iii) the association between pericytes and endothelial cells. Secondly, a high-risk high-gain reverse approach using innovative technologies aims to identify the specific genetic profiles of motile osteoprogenitors and bone-anchored mature osteoblasts.
Overall this project will bring novel mechanistic insight in osteogenic cell movement in bone biology and pathology, and add to our broader understanding of cell migration and progenitor properties. The potential to evoke new therapies to widespread skeletal pathologies underscores the study’s importance and high impact.
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.
- medical and health sciences basic medicine pathology
- medical and health sciences basic medicine physiology homeostasis
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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
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.
ERC-2011-StG_20101109
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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
3000 Leuven
Belgium
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.