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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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CC chemokine ligand 20 partially controls adhesion of naive B cells to activated endothelial cells under shear stress.

Chemokines are thought to control lymphocyte recruitment to the inflamed endothelium. To dissect chemokine-mediated adhesion, binding of ex vivo isolated splenocytes to tumor necrosis factor (TNF)-activated endothelial cells was analyzed under shear stress. We observed specific adhesion of naive follicular B cells, which could be blocked by pertussis toxin. This indicated a G protein- mediated binding and pointed at a contribution of chemokine receptors to B-cell adhesion. Analysis of chemokines expressed by TNF-activated endothelial cells showed that CC chemokine ligand 2 (CCL2), CCL17, and CCL20 were up-regulated. Only on follicular B cells was the cognate receptor for CCL20, CC chemokine receptor 6 (CCR6), expressed strongly, and a functional transmigration assay with CCR6-negative B cells demonstrated conclusively the sole signaling of CCL20 through CCR6. Desensitization of CCR6 on naive B cells with CCL20 resulted in receptor down-regulation and reduced B-cell adhesion. We conclude that CCL20 plays a vital role in B-cell adhesion to the inflamed endothelium.[1]

References

  1. CC chemokine ligand 20 partially controls adhesion of naive B cells to activated endothelial cells under shear stress. Meissner, A., Zilles, O., Varona, R., Jozefowski, K., Ritter, U., Marquez, G., Hallmann, R., Korner, H. Blood (2003) [Pubmed]
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