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[Ag(L)NO

Ane F Santos1, Isabella P Ferreira1, Carlos B Pinheiro1

  • 1Departamento de Química, Departamento de Física, and Departamento de Farmacologia, Universidade Federal de Minas Gerais, Av. Presidente Antônio Carlos 6627, 31270-901 Belo Horizonte, Minas Gerais, Brazil.

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New silver(I) complexes with benzoylhydrazone ligands show enhanced cytotoxicity against melanoma cells. These compounds exhibit potential as targeted cancer therapeutics due to their selective action and albumin transport capabilities.

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Area of Science:

  • Coordination Chemistry
  • Medicinal Chemistry
  • Materials Science

Background:

  • Silver(I) complexes are explored for their therapeutic potential.
  • Benzoylhydrazone ligands offer versatile coordination properties.
  • Understanding metal-ligand interactions is crucial for drug design.

Purpose of the Study:

  • Synthesize and characterize novel silver(I)-benzoylhydrazone complexes.
  • Investigate the cytotoxicity and selectivity of these complexes against melanoma cells.
  • Elucidate the interaction mechanisms of the complexes with biological targets like DNA and albumin.

Main Methods:

  • Synthesis of four silver(I) complexes with varying benzoylhydrazone derivatives.
  • In vitro cytotoxicity assays using B16F10 melanoma and Melan-A melanocyte cell lines.
  • DNA binding studies using calf thymus DNA.
  • In vitro interaction studies with human serum albumin.
  • Theoretical calculations to analyze metal-ligand bonding.

Main Results:

  • All synthesized silver(I) complexes exhibited significant cytotoxicity against B16F10 melanoma cells.
  • Complexes 1-3 demonstrated higher cytotoxicity than cisplatin and parent ligands.
  • Selective toxicity was observed towards tumor cells over non-malignant melanocytes.
  • Complexes interact with DNA via intercalation and bind to human serum albumin.

Conclusions:

  • Silver(I)-benzoylhydrazone complexes represent promising anticancer agents.
  • Nitrate dissociation enhances metal-ligand bonding and cytotoxicity.
  • The complexes show potential for targeted cancer therapy and albumin-mediated transport.