Rapid identification of ETP-46992, orally bioavailable PI3K inhibitor, selective versus mTOR

Bioorg Med Chem Lett. 2012 Aug 15;22(16):5208-14. doi: 10.1016/j.bmcl.2012.06.093. Epub 2012 Jul 4.

Abstract

Phosphoinositide-3-kinases (PI3K) are a family of lipid kinases mediating numerous cell processes such as proliferation, migration and differentiation. PI3K is an important target for cancer therapeutics due to the deregulation of this signaling pathway in a wide variety of human cancers. Herein, we describe the rapid identification of ETP-46992, within 2-aminocarbonyl imidazo [1,2-a] pyrazine series, with suitable pharmacokinetic (PK) properties that allows the establishment of mechanism of action and efficacy in vivo studies. ETP-46992 showed tumor growth inhibition in a GEMM mouse tumor model driven by a K-Ras(G12V) oncogenic mutation and in tumor xenograft models with PI3K pathway deregulated (BT474).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Administration, Oral
  • Animals
  • Apoptosis / drug effects
  • Cell Line, Tumor
  • Cytochromes / metabolism
  • Disease Models, Animal
  • Half-Life
  • Humans
  • Imidazoles / chemical synthesis
  • Imidazoles / chemistry*
  • Imidazoles / pharmacokinetics
  • Mice
  • Mice, Inbred BALB C
  • Microsomes, Liver / metabolism
  • Neoplasms / drug therapy
  • Phosphatidylinositol 3-Kinases / metabolism
  • Phosphoinositide-3 Kinase Inhibitors*
  • Protein Kinase Inhibitors / chemistry*
  • Protein Kinase Inhibitors / pharmacokinetics
  • Protein Kinase Inhibitors / therapeutic use
  • Pyrazines / chemical synthesis
  • Pyrazines / chemistry*
  • Pyrazines / pharmacokinetics
  • TOR Serine-Threonine Kinases / antagonists & inhibitors*
  • TOR Serine-Threonine Kinases / metabolism
  • Transplantation, Heterologous

Substances

  • Cytochromes
  • ETP-46992
  • Imidazoles
  • Phosphoinositide-3 Kinase Inhibitors
  • Protein Kinase Inhibitors
  • Pyrazines
  • TOR Serine-Threonine Kinases