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Related Concept Videos

Extraction: Advanced Methods00:56

Extraction: Advanced Methods

Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is formed in...
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Antiprotozoal Agents

Leishmaniasis is a widespread parasitic disease caused by several Leishmania species. It affects millions of people each year and remains a major public health problem in endemic regions. First-line treatment relies on pentavalent antimonials, including meglumine antimoniate and sodium stibogluconate. Even so, how these drugs work has not been fully clear, especially their interaction with parasite-specific biochemical pathways. One key target is trypanothione reductase (TR), an enzyme that...
Metal-Ligand Bonds02:51

Metal-Ligand Bonds

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Targeted Cancer Therapies02:57

Targeted Cancer Therapies

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Complexation Equilibria: Factors Influencing Stability of Complexes01:09

Complexation Equilibria: Factors Influencing Stability of Complexes

In complexation reactions, metal cations are the electron pair acceptors, and the ligands are the electron pair donors. The stability of the metal complexes depends primarily on the complexing ability of the central metal ion and the nature of the ligands. Generally, the complexing ability of the metal ion depends on the size and charge of the ion. As the metal ion size increases, the stability of the metal complexes decreases, provided that the valency of the metal ion and the ligands remain...
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Updated: Jul 10, 2026

Anticancer Metal Complexes: Synthesis and Cytotoxicity Evaluation by the MTT Assay
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Published on: November 10, 2013

Gold complexes as prospective metal-based anticancer drugs.

V Milacic1, D Fregona, Q P Dou

  • 1The Prevention Program, Barbara Ann Karmanos Cancer Institute, and Department of Pathology, School of Medicine, Wayne State University, Detroit 48201, Michigan, USA.

Histology and Histopathology
|October 24, 2007
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Gold(III) dithiocarbamate complexes show anticancer activity by targeting the proteasome, inhibiting tumor growth, and inducing apoptosis in vivo. This offers a promising alternative to cisplatin chemotherapy.

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Area of Science:

  • Medicinal Chemistry
  • Biochemistry
  • Oncology

Background:

  • Gold's historical medicinal use contrasts with its limited modern application.
  • Cisplatin, a platinum-based drug, faces challenges like toxicity and resistance.
  • Gold(III) complexes, structurally similar to cisplatin, are explored for anticancer potential.

Purpose of the Study:

  • Investigate the anticancer activity of gold(III) dithiocarbamate complexes.
  • Determine the molecular target of these gold compounds.
  • Evaluate their efficacy in a preclinical cancer model.

Main Methods:

  • Synthesis and characterization of gold(III) dithiocarbamate complexes.
  • In vitro assays to assess cytotoxicity and proteasome inhibition.
  • In vivo studies using human breast tumor xenografts in nude mice.

Main Results:

  • Gold(III) dithiocarbamates demonstrated significant anticancer effects.
  • The primary molecular target identified was the proteasome.
  • In vivo treatment led to tumor growth inhibition, proteasome suppression, and apoptosis.

Conclusions:

  • Gold(III) dithiocarbamates represent a novel class of anticancer agents targeting the proteasome.
  • These compounds offer a potential alternative to platinum-based drugs with different mechanisms.
  • Further research into gold compound metabolism is crucial for clinical development.