Design, synthesis, and cytotoxicity screening of novel pyrazolopyrimidines over renal cell carcinoma (UO-31 cells) as p38α inhibitors, and apoptotic cells inducing activities

Eur J Med Chem. 2025 Jan 5:281:117005. doi: 10.1016/j.ejmech.2024.117005. Epub 2024 Nov 5.

Abstract

A series of novel molecules with pyrazolopyrimidine-4-amine core were designed and synthesized as potential cytotoxic agents over Renal Cell Carcinoma cells (UO-31). Results of cytotoxic activity against UO-31 cells showed that pyrazolopyrimidines 19 and 31 were found to be more cytotoxic than sorafenib (SOR). The cytotoxic activity of these compounds appeared to correlate with their ability to inhibit p38α MAPK which are 2.53- and 2.27- folds more potent than SOR. Moreover, results of the cell cycle analysis as well as the results of annexin-V on the (UO-31) cells showed that pyrazolopyrimidines 19 and 31 had a pro-apoptotic activity higher than SOR by 1.42- and 1.20- folds, respectively. Furthermore, compounds 19 and 31 were found to be effective in arresting the cell cycle throughout the accumulation of the cells at G2/M phase. Finally, the tested compounds decreased the TNF concentration as well as increased the expression of tumor suppressor gene p53, Bax/BCL-2 ratio and caspase 3/7.

Keywords: Anticancer activity; Pyrazolopyrimidines; UO-31 cells; p38α inhibitors.

MeSH terms

  • Antineoplastic Agents* / chemical synthesis
  • Antineoplastic Agents* / chemistry
  • Antineoplastic Agents* / pharmacology
  • Apoptosis* / drug effects
  • Carcinoma, Renal Cell* / drug therapy
  • Carcinoma, Renal Cell* / pathology
  • Cell Line, Tumor
  • Cell Proliferation / drug effects
  • Dose-Response Relationship, Drug
  • Drug Design*
  • Drug Screening Assays, Antitumor*
  • Humans
  • Kidney Neoplasms* / drug therapy
  • Kidney Neoplasms* / pathology
  • Mitogen-Activated Protein Kinase 14 / antagonists & inhibitors
  • Mitogen-Activated Protein Kinase 14 / metabolism
  • Molecular Structure
  • Protein Kinase Inhibitors* / chemical synthesis
  • Protein Kinase Inhibitors* / chemistry
  • Protein Kinase Inhibitors* / pharmacology
  • Pyrazoles* / chemical synthesis
  • Pyrazoles* / chemistry
  • Pyrazoles* / pharmacology
  • Pyrimidines* / chemical synthesis
  • Pyrimidines* / chemistry
  • Pyrimidines* / pharmacology
  • Structure-Activity Relationship

Substances

  • Antineoplastic Agents
  • Pyrimidines
  • Pyrazoles
  • Protein Kinase Inhibitors
  • Mitogen-Activated Protein Kinase 14