Τίτλος:
Pharmacological characterization in vitro of EP2306 and EP2302, potent inhibitors of squalene synthase and lipid biosynthesis
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
We investigated the effects of EP2306 and EP2302, two novel 2-biphenylmorpholine derivatives, on squalene synthase activity in rabbit and human liver microsomes, lipid biosynthesis, low-density lipoprotein (LDL) receptor expression and LDL protein uptake as well as apoB secretion in HepG2 cells. Both EP2306 and EP2302 inhibited squalene synthase activity dose-dependently. In rabbit liver microsomes, the IC50 values were 33 μM for EP2306 and 0.6 μM for EP2302 whereas in human liver microsomes, they were 63 μM for EP2306 and 1 μM for EP2302. Both EP2300 compounds inhibited cholesterol production by HepG2 cells dose dependently with IC 50 values of 13.3 μM for EP2306 and 3 μM for EP2302. Furthermore, both EP2300 compounds and simvastatin significantly reduced triglyceride synthesis and apoB secretion and increased LDL receptor expression and LDL uptake in HepG2 cells. In summary, we have shown that EP2300 compounds are potent inhibitors of squalene synthase activity in rabbit and human liver microsomes and also they are effective inhibitors of cholesterol and triglyceride biosynthesis in HepG2 cells. These results suggest that EP2306 and EP2302 might prove to be useful for lipid-lowering and treatment of atherosclerosis in vivo. © 2006 Elsevier B.V. All rights reserved.
Συγγραφείς:
Tavridou, A.
Kaklamanis, L.
Megaritis, G.
Kourounakis, A.P.
Papalois, A.
Roukounas, D.
Rekka, E.A.
Kourounakis, P.N.
Charalambous, A.
Manolopoulos, V.G.
Περιοδικό:
European Journal of Pharmacology
Λέξεις-κλειδιά:
2 (4 biphenyl) 2 (3 nitrooxypropoxy) 4 methylmorpholine; 2 (4 biphenyl) 4 methyloctahydro 1,4 benzoxazin 2 ol; apolipoprotein B; cholesterol; ep 2300; ep 2302; ep 2306; lipid; low density lipoprotein receptor; morpholine derivative; simvastatin; squalene synthase; triacylglycerol; unclassified drug, animal cell; article; cell line; concentration response; controlled study; drug mechanism; drug structure; enzyme activity; human; human cell; IC 50; in vitro study; lipogenesis; liver microsome; nonhuman; priority journal; protein expression; protein secretion; protein transport, Animals; Apolipoproteins B; Biological Transport; Biphenyl Compounds; Cell Line, Tumor; Cholesterol; Dose-Response Relationship, Drug; Enzyme Inhibitors; Farnesyl-Diphosphate Farnesyltransferase; Humans; Lipids; Lipoproteins, LDL; Microscopy, Fluorescence; Microsomes, Liver; Morpholines; Rabbits; Receptors, LDL; Simvastatin; Triglycerides
DOI:
10.1016/j.ejphar.2006.02.006
