Abstract：
:The chemokine Cxcl12 binds Cxcr4 and Cxcr7 receptors to control cell migration in multiple biological contexts, including brain development, leukocyte trafficking, and tumorigenesis. Both receptors are expressed in the CNS, but how they cooperate during migration has not been elucidated. Here, we used the migration of cortical interneurons as a model to study this process. We found that Cxcr4 and Cxcr7 are coexpressed in migrating interneurons, and that Cxcr7 is essential for chemokine signaling. Intriguingly, this process does not exclusively involve Cxcr7, but most critically the modulation of Cxcr4 function. Thus, Cxcr7 is necessary to regulate Cxcr4 protein levels, thereby adapting chemokine responsiveness in migrating cells. This demonstrates that a chemokine receptor modulates the function of another chemokine receptor by controlling the amount of protein that is made available for signaling at the cell surface.
journal_name
Neuronjournal_title
Neuronauthors
Sánchez-Alcañiz JA,Haege S,Mueller W,Pla R,Mackay F,Schulz S,López-Bendito G,Stumm R,Marín Odoi
10.1016/j.neuron.2010.12.006subject
Has Abstractpub_date
2011-01-13 00:00:00pages
77-90issue
1eissn
0896-6273issn
1097-4199pii
S0896-6273(10)00991-8journal_volume
69pub_type
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