Development of a series of 4-hydroxycoumarin platinum(IV) hybrids as antitumor agents: Synthesis, biological evaluation and action mechanism investigation

J Inorg Biochem. 2019 May:194:34-43. doi: 10.1016/j.jinorgbio.2019.02.011. Epub 2019 Feb 23.

Abstract

A series of new 4-hydroxycoumarin platinum(IV) complexes were designed, synthesized and evaluated as antitumor agents. All the title compounds display moderate to effective antitumor activities toward the tested cell lines and two prominent compounds were screened out with activities comparable to cisplatin and oxaliplatin. The mechanism investigation demonstrates that the platinum(IV) compounds could be reduced to bivalence and exert significant genotoxicity to tumor cells. Meanwhile the coumarin moiety endows the title compounds with cyclooxygenase inhibitory competence which might favour the reduction of tumor-related inflammation and further influence tumor proliferation. The coumarin platinum(IV) complex could effectively induce apoptosis of SKOV-3 cells through up-regulating the expression of caspase3 and caspase9. Furthermore, the conversion of platinum(II) drugs to platinum(IV) form via the conjunction with 4-hydroxycoumarin enhances the drug uptake in whole cells and DNA simultaneously. Moreover, the 4-hydroxycoumarin platinum(IV) complex could combine with human serum albumin via van der Waals force and hydrogen bond, which would influence their transport and bioactivities in vivo.

Keywords: Antitumor; Coumarin; Cyclooxygenase inhibition; DNA damage; Platinum.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • 4-Hydroxycoumarins / chemical synthesis
  • 4-Hydroxycoumarins / metabolism
  • 4-Hydroxycoumarins / pharmacology*
  • Antineoplastic Agents / chemical synthesis
  • Antineoplastic Agents / metabolism
  • Antineoplastic Agents / pharmacology*
  • Apoptosis / drug effects
  • Cell Line, Tumor
  • Coordination Complexes / chemical synthesis
  • Coordination Complexes / metabolism
  • Coordination Complexes / pharmacology*
  • Cyclooxygenase 2 Inhibitors / chemical synthesis
  • Cyclooxygenase 2 Inhibitors / metabolism
  • Cyclooxygenase 2 Inhibitors / pharmacology
  • DNA / drug effects
  • DNA Damage / drug effects
  • Drug Design
  • Drug Screening Assays, Antitumor
  • HEK293 Cells
  • Humans
  • Platinum / chemistry
  • Serum Albumin, Human / metabolism

Substances

  • 4-Hydroxycoumarins
  • Antineoplastic Agents
  • Coordination Complexes
  • Cyclooxygenase 2 Inhibitors
  • Platinum
  • DNA
  • Serum Albumin, Human