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

Bimatoprost (Lumigan((R))) is an agonist at the cloned human ocular FP prostaglandin receptor: real-time FLIPR-based intracellular Ca(2+) mobilization studies.

Bimatoprost is the ethyl amide derivative of 17-phenyl-trinor prostaglandin F(2alpha). Here, we show that bimatoprost (K(i)=9250+/-846nM) and bimatoprost free acid (17-phenyl-trinor prostaglandin F(2alpha); K(i)=59+/-6nM) bind to the FP receptor and displace [(3)H]-travoprost acid, a selective FP agonist. Bimatoprost (EC(50)=3070+/-1330nM), Lumigan((R)) (bimatoprost 0.03% ophthalmic solution; EC(50)=1150+/-93nM) and bimatoprost acid (EC(50)=15+/-3nM) mobilized intracellular Ca(2+) ([Ca(2+)](i)) in <5s in HEK-293 cells expressing the cloned human ciliary body FP receptor on a fluorometric imaging plate reader (FLIPR). Furthermore, agonist effects of bimatoprost and bimatoprost acid were blocked by AL-8810 (11beta-fluoro-15-epi-15-indanyl prostaglandin F(2alpha); K(i)=0.7-2.1 MicroM), an FP receptor-selective antagonist. Therefore, the prodrug bimatoprost and its hydrolytic product, bimatoprost free acid, bind to and activate the human ocular FP prostaglandin receptor to mobilize [Ca(2+)](i), thus behaving as FP receptor agonists.[1]


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