Objective
To move cargo between specific membrane-bound intracellular compartments, eukaryotic cells have evolved numerous mechanisms of membrane trafficking regulation. We found that CD1a, an MHC Class I-like lipid antigen presenting molecule follows an endocytic recycling pathway similar to that used by MHC Class I and other cargo internalized independently of clathrin. In an attempt to discover new regulators of this pathway, we screened a shRNA library for changes in CD1a surface expression and we found that the small GTPase Arl13b could be involved in the regulation of endocytic trafficking. The knock-down of Arl13b caused the clustering of early endosomes and the accumulation in this organelle of recycling cargo, such as transferrin, and also cargo destined for late endosomes and lysosomes, such as dextran. Moreover, the recycling rate of CD1a was decreased when Arl13b was knocked-down. Together, these results indicate that Arl13b regulates a sorting step from the early/sorting endosome. Arl13b belongs to the Arf-like (Arl) family of small GTPases, which remains poorly characterized. By uncovering its function we will shed light on the regulatory functions of this family of proteins. Future studies will focus on finding Arl13b effectors, determining if Arl13b binds to the cytoskeleton like other Arls, and also establishing the role of this protein in the primary cilium, a structure where Arl13b localizes prominently.
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.
- engineering and technology environmental engineering waste management waste treatment processes recycling
- natural sciences biological sciences biochemistry biomolecules proteins
- natural sciences biological sciences biochemistry biomolecules lipids
You need to log in or register to use this function
We are sorry... an unexpected error occurred during execution.
You need to be authenticated. Your session might have expired.
Thank you for your feedback. You will soon receive an email to confirm the submission. If you have selected to be notified about the reporting status, you will also be contacted when the reporting status will change.
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.
FP7-PEOPLE-2009-RG
See other projects for this call
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.
Coordinator
1169 056 LISBOA
Portugal
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.