PMID- 30706477 OWN - NLM STAT- MEDLINE DCOM- 20190902 LR - 20190902 IS - 1558-9307 (Electronic) IS - 0024-4201 (Linking) VI - 53 IP - 11-12 DP - 2018 Nov TI - Large-Scale Screening of Natural Products Transactivating Peroxisome Proliferator-Activated Receptor alpha Identifies 9S-Hydroxy-10E,12Z,15Z-Octadecatrienoic Acid and Cymarin as Potential Compounds Capable of Increasing Apolipoprotein A-I Transcription in Human Liver Cells. PG - 1021-1030 LID - 10.1002/lipd.12116 [doi] AB - Increasing apolipoprotein A-I (apoA-I), the predominant protein of high-density lipoprotein (HDL) particles, has favorable effects on atherogenic risk factors. Here, we investigated the effects of peroxisome proliferator-activated receptor alpha (PPARalpha) transactivating compounds on apoA-I transcription in HepG2 cells. A transient PPARalpha agonist transactivation assay was used to screen 2500 natural compounds. To analyze the effects on apoA-I transcription, human hepatocellular liver carcinoma (HepG2) were exposed to 0.1, 1, and 10 mug/mL of the natural PPARalpha transactivators. ApoA-I mRNA expression was determined by quantitative polymerase chain reaction. Extensive dose-response experiments were performed using compounds that increased apoA-I transcription by minimally 20%. Kelch-like ECH-associated protein 1 (KEAP) and carnitine palmitoyltransferase 1 alpha (CPT1alpha) expression were used respectively to confirm Bromodomain-containing protein 4 inhibition or PPARalpha activation. Twenty-eight natural compounds increased PPARalpha transactivation by at least twofold. Despite the increased CPT1alpha expression seen after the addition of most PPARalpha activating compounds, CPT1alpha expression and PPARalpha transactivation did not correlate. Addition of 0.05 mug/mL 9S-hydroxy-10E,12Z,15Z-octadecatrienoic acid (9(S)-HOTrE) increased apoA-I mRNA expression by 35%, whereas 10-25 mug/mL of cymarin increased apoA-I transcription by 37%. However, combining cymarin and 9(S)-HOTrE did not result in a synergistic effect, in contrast this combination even decreased apoA-I transcription. ApoA-I transcription involves multiple regulatory players, and PPARalpha transactivation alone is not sufficient. A search for natural compounds resembling the molecular structure of 9(S)-HOTrE or cymarin could aid to find additional components that increase apoA-I transcription. CI - (c) 2019 The Authors. Lipids published by AOCS. FAU - van der Krieken, Sophie E AU - van der Krieken SE AD - NUTRIM School of Nutrition and Translational Research in Metabolism, Department of Nutrition and Movement Sciences, Maastricht University, PO Box 616, 6200 MD, Maastricht, The Netherlands. FAU - Popeijus, Herman E AU - Popeijus HE AD - NUTRIM School of Nutrition and Translational Research in Metabolism, Department of Nutrition and Movement Sciences, Maastricht University, PO Box 616, 6200 MD, Maastricht, The Netherlands. FAU - Bendik, Igor AU - Bendik I AD - DSM Nutritional Products Ltd, Research and Development, Human Nutrition and Health, PO Box 2676, Basel, Switzerland. FAU - Bohlendorf, Bettina AU - Bohlendorf B AD - DSM Nutritional Products Ltd, Research and Development, Human Nutrition and Health, PO Box 2676, Basel, Switzerland. FAU - Konings, Maurice C J M AU - Konings MCJM AD - NUTRIM School of Nutrition and Translational Research in Metabolism, Department of Nutrition and Movement Sciences, Maastricht University, PO Box 616, 6200 MD, Maastricht, The Netherlands. FAU - Tayyeb, Jehad AU - Tayyeb J AD - NUTRIM School of Nutrition and Translational Research in Metabolism, Department of Nutrition and Movement Sciences, Maastricht University, PO Box 616, 6200 MD, Maastricht, The Netherlands. FAU - Mensink, Ronald P AU - Mensink RP AD - NUTRIM School of Nutrition and Translational Research in Metabolism, Department of Nutrition and Movement Sciences, Maastricht University, PO Box 616, 6200 MD, Maastricht, The Netherlands. FAU - Plat, Jogchum AU - Plat J AD - NUTRIM School of Nutrition and Translational Research in Metabolism, Department of Nutrition and Movement Sciences, Maastricht University, PO Box 616, 6200 MD, Maastricht, The Netherlands. LA - eng GR - Ministry of Economic Affairs/International GR - Netherlands Organization for Scientific Research (NWO)/International GR - 11349/Dutch Technology Foundation STW/International PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190201 PL - United States TA - Lipids JT - Lipids JID - 0060450 RN - 0 (Apolipoprotein A-I) RN - 0 (Biological Products) RN - 0 (Dicarboxylic Acids) RN - 0 (PPAR alpha) RN - 565ZMT5QRG (octadecenedioic acid) RN - UK3LS8435E (Cymarine) SB - IM MH - Apolipoprotein A-I/*genetics MH - Biological Products/*pharmacology MH - Cell Survival/drug effects/genetics MH - Cymarine/*pharmacology MH - Dicarboxylic Acids/*pharmacology MH - HEK293 Cells MH - Hep G2 Cells MH - Humans MH - PPAR alpha/*metabolism OTO - NOTNLM OT - 9(S)-HOTrE OT - Apolipoprotein A-I OT - Cymarin OT - Fatty acids OT - High-density lipoprotein OT - Peroxisome proliferator-activated receptor alpha OT - Transactivation OT - qPCR EDAT- 2019/02/02 06:00 MHDA- 2019/09/03 06:00 CRDT- 2019/02/02 06:00 PHST- 2017/12/20 00:00 [received] PHST- 2018/10/18 00:00 [revised] PHST- 2018/11/27 00:00 [accepted] PHST- 2019/02/02 06:00 [pubmed] PHST- 2019/09/03 06:00 [medline] PHST- 2019/02/02 06:00 [entrez] AID - 10.1002/lipd.12116 [doi] PST - ppublish SO - Lipids. 2018 Nov;53(11-12):1021-1030. doi: 10.1002/lipd.12116. Epub 2019 Feb 1.