Novel series of 6-(2-substitutedacetamido)-4-anilinoquinazolines as EGFR-ERK signal transduction inhibitors in MCF-7 breast cancer cells

Eur J Med Chem. 2018 Jul 15:155:782-796. doi: 10.1016/j.ejmech.2018.06.024. Epub 2018 Jun 19.

Abstract

Epidermal growth factor receptor (EGFR) signaling pathway has been previously investigated for its significant role in the progression of different types of malignant tumors, where development of small molecules targeting EGFR is well known strategy for design of antitumor agents. Herein, we report the design and synthesis of two series of 6-(2-substitutedacetamido)-4-anilinoquinazolines (6a-x and 13a-d) as EGFR inhibitors. All the newly synthesized quinazoline derivatives were in vitro evaluated for their anti-proliferative activity towards MCF-7 (Breast Cancer) and HepG2 (Hepatocellular carcinoma) cell lines. In particular, compound 6n showed significant inhibitory activity against MCF-7 and HepG2 cell lines (IC50 = 3 and 16 μM, respectively), compared to that of Erlotinib (IC50 = 20 and 25 μM, respectively). Western blotting of 6n at MCF-7 cell line revealed the dual inhibitory activity of 6n towards diminishing the phosphorylated levels for EGFR and ERK. Also, ELISA assay confirmed the anti-EGFR activity of compound 6n (IC50 = 0.037 μM). Finally, a molecular docking study showed the potential binding mode of 6n within the ATP catalytic binding site of EGFR, exhibiting similar binding mode to EGFR inhibitor Erlotinib.

Keywords: Anilinoquinazolines; Docking; EGFR; ERK; Synthesis.

MeSH terms

  • Aniline Compounds / chemical synthesis
  • Aniline Compounds / chemistry
  • Aniline Compounds / pharmacology*
  • Antineoplastic Agents / chemical synthesis
  • Antineoplastic Agents / chemistry
  • Antineoplastic Agents / pharmacology*
  • Cell Proliferation / drug effects
  • Drug Screening Assays, Antitumor
  • ErbB Receptors / antagonists & inhibitors*
  • ErbB Receptors / biosynthesis
  • ErbB Receptors / metabolism
  • Hep G2 Cells
  • Humans
  • MAP Kinase Signaling System / drug effects*
  • MCF-7 Cells
  • Models, Molecular
  • Molecular Structure
  • Protein Kinase Inhibitors / chemical synthesis
  • Protein Kinase Inhibitors / chemistry
  • Protein Kinase Inhibitors / pharmacology*
  • Quinazolines / chemical synthesis
  • Quinazolines / chemistry
  • Quinazolines / pharmacology*
  • Signal Transduction / drug effects*

Substances

  • Aniline Compounds
  • Antineoplastic Agents
  • Protein Kinase Inhibitors
  • Quinazolines
  • anilinoquinazoline
  • EGFR protein, human
  • ErbB Receptors