Eicosanoid-based Therapy for Diabetes

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 DESCRIPTION (provided by applicant): Diabetes and metabolic syndrome (MetS) afflicts close to 70 million Americans and diabetes accounts for close to half of all new cases of kidney failure. There is increasing interest in finding therapeutic targets and therapies that target multiple risk factors, thereby minimizing problems associated with multi-drug regimens in MetS and type 2 diabetic patients. The eicosanoid metabolome is altered in MetS and type 2 diabetes patients. The eicosanoid metabolome is altered in MetS and type 2 diabetes, and such alterations have been demonstrated to affect multiple factors including blood pressure, lipid levels, and insulin signaling. We have developed a novel chemical entity, 4-(phenyl-3-{3-[-(4-trifluoromethyl-phenyl)-ureido]-propyl}-pyrazol-1-yl)- benzenesulfonamide (PTUPB), that uniquely inhibits both soluble epoxide hydrolase (sEH) and cyclooxygenase (COX) and demonstrates potential as a therapeutic for MetS, type 2 diabetes and the associated kidney failure. Our long-term objective is to make significant steps towards an ultimate goal of an Investigational New Drug (IND) application for a novel chemical entity that uniquely alters eicosanoid metabolites and demonstrates potential as a therapeutic for MetS, type 2 diabetes. The overall objective of this application, which is the next step toward attainment of our long-term goal, is the pharmacological testing and the development and optimization of PTUPB-based COX-2/sEH inhibitors as a novel therapy for MetS and type 2 diabetes. Our central hypothesis is that inhibition of both COX-2 and sEH will uniquely alter eicosanoid metabolites to improve insulin signaling and renal function in MetS and type 2 diabetes. Our preliminary experiments demonstrate that the COX-2/sEH inhibitor, PTUPB has great therapeutic potential for treating multiple risk factors of MetS, type 2 diabetes and the associated kidney failure. Guided by strong preliminary data, our central hypothesis will be tested by pursuing three specific aims: 1) Optimize the PTUPB chemical scaffold to enhance the pharmacokinetic profile and the therapeutic potential; 2) Test the hypothesis that COX- 2/sEH inhibitors will manipulate eicosanoid metabolites to improve insulin signaling and pancreatic function, and decrease renal injury in MetS; 3) Test the hypothesis that COX-2/sEH inhibitors will manipulate eicosanoid metabolites to improve insulin signaling and pancreatic function, and decrease renal injury in type 2 diabetes. This project will conduct pharmacological testing of prototype small molecules in relevant animal models of MetS and type 2 diabetes. A major part of this proposal will be to utilize medicinal chemistry and computational approaches to optimize our early pre-therapeutic lead PTUPB. This contribution will be significant because it will open the door for identification and further development of COX-2/sEH inhibitors towards a therapeutic for diabetes and kidney disease.