Design, synthesis and cytotoxic evaluation of new thieno[2,3-d]pyrimidine analogues as VEGFR-2/AKT dual inhibitors, apoptosis and autophagy inducers

Bioorg Chem. 2024 Sep:150:107622. doi: 10.1016/j.bioorg.2024.107622. Epub 2024 Jul 9.

Abstract

Novel thieno[2,3-d]pyrimidine analogues were designed, synthesized and evaluated for anti-proliferative activity against HepG-2, PC-3 and MCF-7 cancer cell lines. In addition, WI-38 normal cell line was used to explore the safety of all the tested compounds. Compounds 2 (IC50 = 4.29 µM HePG-2, 10.84 µM MCF-7), 6 (IC50 = 14.86 μM HePG-2, 8.04 μM PC-3 and 12.90 μM MCF-7) and 17 (IC50 = 9.98 μM HePG-2, 33.66 μM PC-3 and 14.62 μM MCF-7) were the most promising candidates on the tested cancer cells with high selective toxicity-sparing normal cells. A further mechanistic evaluation revealed promising kinase inhibitory activity, where compound 2 inhibited VEGFR-2 and AKT at IC50 = 0.161 and 1.06 μM, respectively, Furthermore, derivative 6 inhibited VEGFR-2 and AKT at IC50 = 0.487 and 0.364 μM, respectively, while compound 17 showed IC50 = 0.164 and 0.452 μM, respectively. Moreover, compounds 2, 6 resulted in G1 phase cell cycle arrest while candidate 17 arrest cell cycle at G2/M phase. Similar to the apoptosis results, compound 17 showed the highest autophagic induction among the evaluated derivatives. Finally, docking studies were conducted to assess the binding patterns of these active derivatives. The results showed that the binding patterns inside the active sites of both the VEGFR-2 and AKT-1 (allosteric pocket) crystal structures were identical to the reference ligands.

Keywords: AKT-1; Anticancer; Apoptosis; Autophagy; Thienopyrimidine; VEGFR-2.

MeSH terms

  • Antineoplastic Agents* / chemical synthesis
  • Antineoplastic Agents* / chemistry
  • Antineoplastic Agents* / pharmacology
  • Apoptosis* / drug effects
  • Autophagy* / drug effects
  • Cell Line, Tumor
  • Cell Proliferation* / drug effects
  • Dose-Response Relationship, Drug*
  • Drug Design*
  • Drug Screening Assays, Antitumor*
  • Humans
  • Molecular Docking Simulation
  • Molecular Structure
  • Protein Kinase Inhibitors* / chemical synthesis
  • Protein Kinase Inhibitors* / chemistry
  • Protein Kinase Inhibitors* / pharmacology
  • Proto-Oncogene Proteins c-akt* / antagonists & inhibitors
  • Proto-Oncogene Proteins c-akt* / metabolism
  • Pyrimidines* / chemical synthesis
  • Pyrimidines* / chemistry
  • Pyrimidines* / pharmacology
  • Structure-Activity Relationship
  • Vascular Endothelial Growth Factor Receptor-2* / antagonists & inhibitors
  • Vascular Endothelial Growth Factor Receptor-2* / metabolism

Substances

  • Vascular Endothelial Growth Factor Receptor-2
  • Pyrimidines
  • Antineoplastic Agents
  • Protein Kinase Inhibitors
  • KDR protein, human
  • Proto-Oncogene Proteins c-akt
  • thieno(2,3-d)pyrimidine