Inventors:
Jayakrishna Ambati - Lexington KY, US
Mark Ellsworth Kleinman - Lexington KY, US
Assignee:
University of Kentucky Research Foundation - Lexington KY
International Classification:
A61K 49/00, A61K 38/02, A61P 27/02, G01N 33/566, A61K 39/395, B82Y 15/00
US Classification:
424 96, 435 721, 4241721, 514 208, 4241781, 977774, 977927
Abstract:
The results presented herein demonstrate the specific expression of CCR3 in CNV endothelial cells in humans with AMD, and despite the expression of its ligands, eotaxin-1, -2, and -3, neither eosinophils nor mast cells are present in human CNV. The genetic or pharmacological targeting of CCR3 or eotaxins as disclosed herein inhibited injury-induced CNV in mice. CNV suppression by CCR3 blockade was due to direct inhibition of endothelial cell proliferation, and was uncoupled from inflammation as it occurred in mice lacking eosinophils or mast cells and was independent of macrophage and neutrophil recruitment. CCR3 blockade was more effective at reducing CNV than vascular endothelial growth factor-A (VEGF-A) neutralization, which is currently in clinical use, and, unlike VEGF-A blockade, not toxic to the mouse retina. In vivo imaging with CCR3-targeting quantum dots located spontaneous CNV invisible to standard fluorescein angiography in mice before retinal invasion. CCR3 targeting is useful in reducing vision loss due to AMD through early detection and therapeutic angioinhibition.