PMID- 26110200 OWN - NLM STAT- MEDLINE DCOM- 20151208 LR - 20171116 IS - 1520-4804 (Electronic) IS - 0022-2623 (Linking) VI - 58 IP - 15 DP - 2015 Aug 13 TI - Discovery and Optimization of a Porcupine Inhibitor. PG - 5889-99 LID - 10.1021/acs.jmedchem.5b00507 [doi] AB - Wnt proteins regulate various cellular functions and serve distinct roles in normal development throughout life. Wnt signaling is dysregulated in various diseases including cancers. Porcupine (PORCN) is a membrane-bound O-acyltransferase that palmitoleates the Wnts and hence is essential for their secretion and function. The inhibition of PORCN could serve as a therapeutic approach for the treatment of a number of Wnt-dependent cancers. Herein, we describe the identification of a Wnt secretion inhibitor from cellular high throughput screening. Classical SAR based cellular optimization provided us with a PORCN inhibitor with nanomolar activity and excellent bioavailability that demonstrated efficacy in a Wnt-driven murine tumor model. Finally, we also discovered that enantiomeric PORCN inhibitors show very different activity in our reporter assay, suggesting that such compounds may be useful for mode of action studies on the PORCN O-acyltransferase. FAU - Duraiswamy, Athisayamani Jeyaraj AU - Duraiswamy AJ AD - daggerExperimental Therapeutics Centre, 31 Biopolis Way, No. 03-01 Nanos, 138669, Singapore. FAU - Lee, May Ann AU - Lee MA AD - daggerExperimental Therapeutics Centre, 31 Biopolis Way, No. 03-01 Nanos, 138669, Singapore. FAU - Madan, Babita AU - Madan B AD - double daggerDuke-NUS Graduate Medical School Singapore, 8 College Road, 169857, Singapore. FAU - Ang, Shi Hua AU - Ang SH AD - daggerExperimental Therapeutics Centre, 31 Biopolis Way, No. 03-01 Nanos, 138669, Singapore. FAU - Tan, Eldwin Sum Wai AU - Tan ES AD - daggerExperimental Therapeutics Centre, 31 Biopolis Way, No. 03-01 Nanos, 138669, Singapore. FAU - Cheong, Wei Wen Vivien AU - Cheong WW AD - daggerExperimental Therapeutics Centre, 31 Biopolis Way, No. 03-01 Nanos, 138669, Singapore. FAU - Ke, Zhiyuan AU - Ke Z AD - daggerExperimental Therapeutics Centre, 31 Biopolis Way, No. 03-01 Nanos, 138669, Singapore. FAU - Pendharkar, Vishal AU - Pendharkar V AD - daggerExperimental Therapeutics Centre, 31 Biopolis Way, No. 03-01 Nanos, 138669, Singapore. FAU - Ding, Li Jun AU - Ding LJ AD - daggerExperimental Therapeutics Centre, 31 Biopolis Way, No. 03-01 Nanos, 138669, Singapore. FAU - Chew, Yun Shan AU - Chew YS AD - daggerExperimental Therapeutics Centre, 31 Biopolis Way, No. 03-01 Nanos, 138669, Singapore. FAU - Manoharan, Vithya AU - Manoharan V AD - daggerExperimental Therapeutics Centre, 31 Biopolis Way, No. 03-01 Nanos, 138669, Singapore. FAU - Sangthongpitag, Kanda AU - Sangthongpitag K AD - daggerExperimental Therapeutics Centre, 31 Biopolis Way, No. 03-01 Nanos, 138669, Singapore. FAU - Alam, Jenefer AU - Alam J AD - daggerExperimental Therapeutics Centre, 31 Biopolis Way, No. 03-01 Nanos, 138669, Singapore. FAU - Poulsen, Anders AU - Poulsen A AD - daggerExperimental Therapeutics Centre, 31 Biopolis Way, No. 03-01 Nanos, 138669, Singapore. FAU - Ho, Soo Yei AU - Ho SY AD - daggerExperimental Therapeutics Centre, 31 Biopolis Way, No. 03-01 Nanos, 138669, Singapore. FAU - Virshup, David M AU - Virshup DM AD - double daggerDuke-NUS Graduate Medical School Singapore, 8 College Road, 169857, Singapore. FAU - Keller, Thomas H AU - Keller TH AD - daggerExperimental Therapeutics Centre, 31 Biopolis Way, No. 03-01 Nanos, 138669, Singapore. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150716 PL - United States TA - J Med Chem JT - Journal of medicinal chemistry JID - 9716531 RN - 0 (Enzyme Inhibitors) RN - 0 (Membrane Proteins) RN - EC 2.3.- (Acyltransferases) RN - EC 2.3.1.- (PORCN protein, human) SB - IM MH - Acyltransferases MH - Drug Discovery MH - Enzyme Inhibitors/chemistry/*pharmacology MH - Membrane Proteins/*antagonists & inhibitors MH - Models, Molecular MH - Structure-Activity Relationship MH - Wnt Signaling Pathway EDAT- 2015/06/26 06:00 MHDA- 2015/12/15 06:00 CRDT- 2015/06/26 06:00 PHST- 2015/06/26 06:00 [entrez] PHST- 2015/06/26 06:00 [pubmed] PHST- 2015/12/15 06:00 [medline] AID - 10.1021/acs.jmedchem.5b00507 [doi] PST - ppublish SO - J Med Chem. 2015 Aug 13;58(15):5889-99. doi: 10.1021/acs.jmedchem.5b00507. Epub 2015 Jul 16.