Butaprost is an EP2 selective agonist which has frequently been used to pharmacologically define the EP receptor expression profile of various human and animal tissues and cells.1,2 Prostaglandin free acids generally bind to their cognate receptors with 10 to 100 times the affinity of the corresponding ester derivative. Consistent with this trend, butaprost binds to membranes from EP2 receptor-transfected CHO cells with a Ki value of 2,400 nM, whereas butaprost (free acid) and CAY10399 (the 2-series congener of butaprost free acid) exhibit significantly lower Ki values of 73 and 92 nM, respectively.3 Butaprost (free acid) is therefore another useful tool for characterizing EP receptor-mediated signalling events.
1Kiriyama, M., Ushikubi, F., Kobayashi, T., et al. Ligand binding specificities of the eight types and subtypes of the mouse prostanoid receptors expressed in Chinese hamster ovary cells. Br J Pharmacol122217-224(1997).
2Lawrence, R.A., and Jones, R.L.Investigation of the prostaglandin E (EP-) receptor subtype mediating relaxation of the rabbit jugular vein. Br J Pharmacol105817-824(1992).
3Tani, K., Naganawa, A., Ishida, A., et al. Design and synthesis of a highly selective EP2-receptor agonist. Bioorg Med Chem Lett112025-2028(2001).
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Cayman Chemical was formed over thirty years ago by demonstrating the value of naturally growing gorgonian corals as a renewable, economically viable source of prostaglandins. Today we operate our business knowing that we owe our start to the renewable resources our environment had provided. As Cayman Chemical continues to grow we consistently evaluate our business processes to ensure we are operating at the highest environmental standards.
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