Near-infrared fluorescent divalent RGD ligand for integrin αvβ₃-targeted optical imaging.
Near-infrared fluorescent divalent RGD ligand for integrin αvβ₃-targeted optical imaging.
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DOI:
10.1016/j.bmcl.2012.07.044
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发表时间:
2012-09-01
影响因子:
2.7
通讯作者:
Achilefu, Samuel
中科院分区:
文献类型:
--
作者:
Ye, Yunpeng;Akers, Walter;Xu, Baogang;Bloch, Sharon;Odonkor, Charles;Achilefu, Samuel
A new near-infrared fluorescent compound containing two cyclic RGD motifs, cypate-[c(RGDfK)]2 (1), was synthesized based on a carbocyanine fluorophore bearing two carboxylic acid groups (cypate) for integrin αvβ3-targeting. Compared with its monovalent counterpart cypate-c(RGDfK) (2), 1 exhibited remarkable improvements in integrin αvβ3 binding affinity and tumor uptake in nude mice of A549. The results suggest that cypate-linked divalent ligands can serve as an important molecular platform for exploring receptor-targeted optical imaging and treatment of various diseases.
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