Discovery of Leucyladenylate Sulfamates as Novel Leucyl-tRNA Synthetase (LRS)-Targeted Mammalian Target of Rapamycin Complex 1 (mTORC1) Inhibitors

J Med Chem. 2016 Nov 23;59(22):10322-10328. doi: 10.1021/acs.jmedchem.6b01190. Epub 2016 Nov 9.

Abstract

Recent studies indicate that LRS may act as a leucine sensor for the mTORC1 pathway, potentially providing an alternative strategy to overcome rapamycin resistance in cancer treatments. In this study, we developed leucyladenylate sulfamate derivatives as LRS-targeted mTORC1 inhibitors. Compound 18 selectively inhibited LRS-mediated mTORC1 activation and exerted specific cytotoxicity against colon cancer cells with a hyperactive mTORC1, suggesting that 18 may offer a novel treatment option for human colorectal cancer.

MeSH terms

  • Antineoplastic Agents / chemical synthesis
  • Antineoplastic Agents / chemistry
  • Antineoplastic Agents / pharmacology*
  • Cell Line, Tumor
  • Cell Proliferation / drug effects
  • Dose-Response Relationship, Drug
  • Drug Discovery*
  • Drug Screening Assays, Antitumor
  • Enzyme Inhibitors / chemical synthesis
  • Enzyme Inhibitors / chemistry
  • Enzyme Inhibitors / pharmacology*
  • Humans
  • Leucine / analogs & derivatives*
  • Leucine / chemical synthesis
  • Leucine / chemistry
  • Leucine / pharmacology
  • Leucine-tRNA Ligase / antagonists & inhibitors*
  • Leucine-tRNA Ligase / metabolism
  • Mechanistic Target of Rapamycin Complex 1
  • Molecular Structure
  • Multiprotein Complexes / antagonists & inhibitors*
  • Multiprotein Complexes / metabolism
  • Structure-Activity Relationship
  • TOR Serine-Threonine Kinases / antagonists & inhibitors*
  • TOR Serine-Threonine Kinases / metabolism

Substances

  • Antineoplastic Agents
  • Enzyme Inhibitors
  • Multiprotein Complexes
  • leucyladenylate sulfamate
  • Mechanistic Target of Rapamycin Complex 1
  • TOR Serine-Threonine Kinases
  • Leucine-tRNA Ligase
  • Leucine