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Updated: Jul 5, 2025

Anticancer Metal Complexes: Synthesis and Cytotoxicity Evaluation by the MTT Assay
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Anticancer Metal Complexes: Synthesis and Cytotoxicity Evaluation by the MTT Assay

Published on: November 10, 2013

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Cytotoxic Pt(II) complexes containing alizarin: a selective carrier for DNA metalation

Rossella Caligiuri1, Lara Massai2, Andrea Geri2

  • 1MAT-INLAB, LASCAMM CR-INSTM, Unità INSTM della Calabria, Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Ponte Pietro Bucci Cubo 14C, Arcavacata di Rende (CS), 87036, Italy. iolinda.aiello@unical.it.

Dalton Transactions (Cambridge, England : 2003)
|January 15, 2024
PubMed

Insights

Researchers developed new platinum(II) complexes with alizarin ligands to target triple-negative breast cancer. Complex 6b showed promising anticancer activity and selective targeting, warranting further investigation as a potential therapeutic agent.

Area of Science:

  • Inorganic Chemistry
  • Medicinal Chemistry
  • Cancer Biology

Background:

  • Selective drug delivery enhances anticancer agent efficacy, particularly for challenging cancers like triple-negative breast cancer.
  • Platinum(II) complexes are investigated for cancer treatment, but resistance mechanisms can limit their effectiveness.
  • Alizarin is explored as a protective ligand to improve the stability and targeting of platinum(II) pharmacophores.

Purpose of the Study:

  • To synthesize and characterize novel neutral mixed-ligand platinum(II) complexes incorporating alizarin.
  • To evaluate the in vitro cytotoxicity of these complexes against triple-negative breast cancer cell lines.
  • To investigate the potential of alizarin as a selective carrier for platinum(II) anticancer agents.

Main Methods:

  • Synthesis of platinum(II) complexes with alizarin and diamine ligands.
  • Spectroscopic characterization using FT-IR, NMR, and UV-Vis analyses.
  • In vitro cytotoxicity assays against triple-negative breast cancer cell lines.
  • Electrospray ionization mass spectrometry (ESI-MS) studies to assess interactions with model proteins and DNA fragments.

Main Results:

  • Three platinum(II) compounds (2b, 6b, 7b) exhibited varying cytotoxic effects.
  • Complex 6b demonstrated significant cytotoxicity (10.49 ± 1.21 μM) against triple-negative breast cancer cells.
  • ESI-MS studies provided insights into the interaction mechanisms of the complexes with biological targets.

Conclusions:

  • Alizarin can function as a selective carrier for platinum(II) anticancer agents.
  • Complex 6b shows potential as a prospective anticancer agent for triple-negative breast cancer.
  • Further investigations into complex 6b are warranted for its therapeutic development.

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