| Bioactivity | PD 128042 (CI 976) is a potent, orally active, and selective inhibitor of ACAT (acyl coenzyme A:cholesterol acyltransferase) with an IC50s of 73 nM. PD 128042 is also a potent LPAT (lysophospholipid acyltransferase) inhibitor. PD 128042 inhibits Golgi-associated LPAT activity (IC50=15 μM). PD 128042 inhibits multiple membrane trafficking steps, including ones found in the endocytic and secretory pathway[1][2][3]. | ||||||||||||
| In Vivo | PD 128042 (CI 976) (10-30 mg/kg; gavage, in the chronic cholesterol-fed rat model) decreases non-high density lipoprotein (HDL)-cholesterol and increases HDL-cholesterol in rats with pre-established dyslipidemia[4]. | ||||||||||||
| Name | PD 128042 | ||||||||||||
| CAS | 114289-47-3 | ||||||||||||
| Formula | C23H39NO4 | ||||||||||||
| Molar Mass | 393.56 | ||||||||||||
| Appearance | Solid | ||||||||||||
| Transport | Room temperature in continental US; may vary elsewhere. | ||||||||||||
| Storage |
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| Reference | [1]. Chambers K, et al. A unique lysophospholipid acyltransferase (LPAT) antagonist, CI-976, affects secretory and endocytic membrane trafficking pathways. J Cell Sci. 2005;118(Pt 14):3061-3071. [2]. O'Brien PM, et al. Inhibitors of acyl-CoA:cholesterol O-acyl transferase (ACAT) as hypocholesterolemic agents. 8. Incorporation of amide or amine functionalities into a series of disubstituted ureas and carbamates. Effects on ACAT inhibition in vitro and [3]. Drecktrah D, et al. Inhibition of a Golgi complex lysophospholipid acyltransferase induces membrane tubule formation and retrograde trafficking. Mol Biol Cell. 2003;14(8):3459-3469. [4]. Krause BR, et al. In vivo evidence that the lipid-regulating activity of the ACAT inhibitor CI-976 in rats is due to inhibition of both intestinal and liver ACAT. J Lipid Res. 1993;34(2):279-294. |