- Synthesis and Evaluation of PPARδAgonists That Promote Osteogenesis in a Human Mesenchymal Stem Cell Culture and in a Mouse Model of Human Osteoporosis
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We synthesized a directed library of compounds to explore the structure-activity relationships of peroxisome proliferator-activated receptor δ(PPARδ) activation relative to mesenchymal stem cell (MSC) osteogenesis. Our scaffold used para-substituted cinnamic acids as a polar headgroup, a heteroatom and heterocycle core connecting units, and substituted phenyl groups for the lipophilic tail. Compounds were screened for their ability to increase osteogenesis in MSCs, and the most promising were examined for subunit specificity using a quantitative PPAR transactivation assay. Six compounds were selected for in vivo studies in an ovariectomized mouse model of human postmenopausal osteoporosis. Four compounds improved bone density in vivo, with two (12d and 31a) having activity comparable to that of GW0742, a well-studied PPARδ-selective agonist. 31a (2-methyl-4-[N-methyl-N-[5-methylene-4-methyl-2-[4-(trifluoromethyl)phenyl]thiazole]]aminocinnamic acid) had the highest selectivity for PPARδcompared to other subtypes, its selectivity far exceeding that of GW0742. Our results confirm that PPARδis a new drug target for possible treatment of osteoporosis via in situ manipulation of MSCs.
- Kress, Brian J.,Kim, Dong Hyun,Mayo, Jared R.,Farris, Jeffery T.,Heck, Benjamin,Sarver, Jeffrey G.,Andy, Divya,Trendel, Jill A.,Heck, Bruce E.,Erhardt, Paul W.
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p. 6996 - 7032
(2021/05/29)
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- Novel selective small molecule agonists for peroxisome proliferator-activated receptor δ (PPARδ) - Synthesis and biological activity
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We report the synthesis and biological activity of a new series of small molecule agonists of the human Peroxisome Proliferator-Activated Receptor δ (PPARδ). Several hits were identified from our original libraries containing lipophilic carboxylic acids. Optimization of these hits by structure-guided design led to 7k (GW501516) and 7l (GW0742), which shows an EC50 of 1.1 nM against PPARδ with 1000-fold selectivity over the other human subtypes.
- Sznaidman, Marcos L.,Haffner, Curt D.,Maloney, Patrick R.,Fivush, Adam,Chao, Esther,Goreham, Donna,Sierra, Michael L.,LeGrumelec, Christelle,Xu, H. Eric,Montana, Valerie G.,Lambert, Millard H.,Willson, Timothy M.,Oliver Jr., William R.,Sternbach, Daniel D.
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p. 1517 - 1521
(2007/10/03)
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