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Novel Coumarin-Containing Aminophosphonatesas Antitumor Agent: Synthesis, Cytotoxicity, DNA-Binding and Apoptosis

Ya-Jun Li1,2, Cai-Yi Wang3, Man-Yi Ye4

  • 1State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Chemical Engineering of Guangxi Normal University, Guilin 541004, China. liyajungxnu@163.com.

Molecules (Basel, Switzerland)
|August 20, 2015
PubMed

Insights

Novel coumarin-based alpha-aminophosphonates show potent antitumor activity against human cancer cells. Compound 8j demonstrated significant efficacy, inducing apoptosis and cell cycle arrest, highlighting a synergistic effect for enhanced anticancer properties.

Area of Science:

  • Medicinal Chemistry
  • Organic Synthesis
  • Cancer Biology

Background:

  • Coumarin derivatives are known for diverse biological activities.
  • Alpha-aminophosphonates possess potential therapeutic applications.
  • Developing novel anticancer agents remains a critical research area.

Purpose of the Study:

  • To synthesize and evaluate novel coumarin-containing alpha-aminophosphonates for antitumor activity.
  • To identify potent derivatives with improved efficacy compared to existing compounds.
  • To elucidate the mechanism of action of the most active compounds.

Main Methods:

  • Synthesis of a series of coumarin-based alpha-aminophosphonate derivatives.
  • In vitro antitumor activity assessment against human colorectal (HCT-116), nasopharyngeal carcinoma (KB), and lung adenocarcinoma (MGC-803) cell lines.
  • Mechanism of action studies including cell cycle analysis, apoptosis assays (caspase activation), and DNA-binding experiments.

Main Results:

  • Most synthesized derivatives exhibited enhanced antitumor activity compared to 7-hydroxy-4-methylcoumarin (4-MU).
  • Compound 8j showed significant potency against HCT-116 cells (IC50 = 8.68 μM), approximately 12-fold higher than the parent compound.
  • Compounds 8c, 8d, 8f, and 8j induced apoptosis via G1 cell-cycle arrest; compound 8j activated caspase-9 and caspase-3.
  • DNA intercalation was observed for some derivatives, suggesting a potential DNA-binding mechanism.

Conclusions:

  • The synthesized coumarin-containing alpha-aminophosphonates represent a promising class of anticancer agents.
  • Compound 8j exhibits potent and multi-mechanistic antitumor activity, warranting further investigation.
  • A synergistic interaction between the coumarin and alpha-aminophosphonate moieties likely contributes to the observed enhanced efficacy and chelating properties.
Keywords:
7-hydroxy-4-methylcoumarinDNA bindingcell cyclecytotoxicitysynthesisα-aminophosphonates

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