PMID- 29860841 OWN - NLM STAT- MEDLINE DCOM- 20190624 LR - 20201209 IS - 1520-4804 (Electronic) IS - 0022-2623 (Linking) VI - 61 IP - 14 DP - 2018 Jul 26 TI - alpha-Arylidene Diacylglycerol-Lactones (DAG-Lactones) as Selective Ras Guanine-Releasing Protein 3 (RasGRP3) Ligands. PG - 6261-6276 LID - 10.1021/acs.jmedchem.8b00661 [doi] AB - Diacylglycerol-lactones have proven to be a powerful template for the design of potent ligands targeting C1 domains, the recognition motif for the cellular second messenger diacylglycerol. A major objective has been to better understand the structure activity relations distinguishing the seven families of signaling proteins that contain such domains, of which the protein kinase C (PKC) and RasGRP families are of particular interest. Here, we synthesize a series of aryl- and alkyl-substituted diacylglycerol-lactones and probe their relative selectivities for RasGRP3 versus PKC. Compound 96 showed 73-fold selectivity relative to PKCalpha and 45-fold selectivity relative to PKCepsilon for in vitro binding activity. Likewise, in intact cells, compound 96 induced Ras activation, a downstream response to RasGRP stimulation, with 8-29 fold selectivity relative to PKCdelta S299 phosphorylation, a measure of PKCdelta stimulation. FAU - Ann, Jihyae AU - Ann J AD - Laboratory of Medicinal Chemistry, College of Pharmacy , Seoul National University , Seoul 08826 , Republic of Korea. FAU - Czikora, Agnes AU - Czikora A AD - Laboratory of Cancer Biology and Genetics , Center for Cancer Research, National Cancer Institute, National Institutes of Health , Bethesda , Maryland 20892 , United States. FAU - Saini, Amandeep S AU - Saini AS AD - Laboratory of Cancer Biology and Genetics , Center for Cancer Research, National Cancer Institute, National Institutes of Health , Bethesda , Maryland 20892 , United States. FAU - Zhou, Xiaoling AU - Zhou X AD - Laboratory of Cancer Biology and Genetics , Center for Cancer Research, National Cancer Institute, National Institutes of Health , Bethesda , Maryland 20892 , United States. FAU - Mitchell, Gary A AU - Mitchell GA AD - Laboratory of Cancer Biology and Genetics , Center for Cancer Research, National Cancer Institute, National Institutes of Health , Bethesda , Maryland 20892 , United States. FAU - Lewin, Nancy E AU - Lewin NE AD - Laboratory of Cancer Biology and Genetics , Center for Cancer Research, National Cancer Institute, National Institutes of Health , Bethesda , Maryland 20892 , United States. FAU - Peach, Megan L AU - Peach ML AD - Basic Science Program, Leidos Biomedical Research Inc., Chemical Biology Laboratory , Frederick National Laboratory for Cancer Research, National Institutes of Health , Frederick , Maryland 21702 , United States. FAU - Blumberg, Peter M AU - Blumberg PM AD - Laboratory of Cancer Biology and Genetics , Center for Cancer Research, National Cancer Institute, National Institutes of Health , Bethesda , Maryland 20892 , United States. FAU - Lee, Jeewoo AU - Lee J AUID- ORCID: 0000-0002-7832-6719 AD - Laboratory of Medicinal Chemistry, College of Pharmacy , Seoul National University , Seoul 08826 , Republic of Korea. LA - eng GR - ZIA BC005270/BC/NCI NIH HHS/United States GR - HHSN261200800001E/CA/NCI NIH HHS/United States PT - Journal Article DEP - 20180703 PL - United States TA - J Med Chem JT - Journal of medicinal chemistry JID - 9716531 RN - 0 (1,2-diacylglycerol) RN - 0 (Diglycerides) RN - 0 (Guanine Nucleotide Exchange Factors) RN - 0 (Lactones) RN - 0 (Ligands) RN - 0 (RASGRP3 protein, human) RN - 0 (ras Guanine Nucleotide Exchange Factors) RN - EC 2.7.11.13 (Protein Kinase C-alpha) RN - EC 2.7.11.13 (Protein Kinase C-epsilon) SB - IM MH - Diglycerides/*chemistry MH - *Drug Design MH - Guanine Nucleotide Exchange Factors/chemistry/*metabolism MH - HEK293 Cells MH - Humans MH - Lactones/*chemistry/*metabolism MH - Ligands MH - Models, Molecular MH - Protein Domains MH - Protein Kinase C-alpha/metabolism MH - Protein Kinase C-epsilon/metabolism MH - Substrate Specificity MH - ras Guanine Nucleotide Exchange Factors EDAT- 2018/06/05 06:00 MHDA- 2019/06/25 06:00 CRDT- 2018/06/05 06:00 PHST- 2018/06/05 06:00 [pubmed] PHST- 2019/06/25 06:00 [medline] PHST- 2018/06/05 06:00 [entrez] AID - 10.1021/acs.jmedchem.8b00661 [doi] PST - ppublish SO - J Med Chem. 2018 Jul 26;61(14):6261-6276. doi: 10.1021/acs.jmedchem.8b00661. Epub 2018 Jul 3.