The iron chelating agent, deferoxamine detoxifies Fe(Salen)-induced cytotoxicity

J Pharmacol Sci. 2017 Aug;134(4):203-210. doi: 10.1016/j.jphs.2017.07.002. Epub 2017 Jul 25.

Abstract

Iron-salen, i.e., μ-oxo-N,N'-bis(salicylidene)ethylenediamine iron (Fe(Salen)) was a recently identified as a new anti-cancer compound with intrinsic magnetic properties. Chelation therapy has been widely used in management of metallic poisoning, because an administration of agents that bind metals can prevent potential lethal effects of particular metal. In this study, we confirmed the therapeutic effect of deferoxamine mesylate (DFO) chelation against Fe(Salen) as part of the chelator antidote efficacy. DFO administration resulted in reduced cytotoxicity and ROS generation by Fe(Salen) in cancer cells. DFO (25 mg/kg) reduced the onset of Fe(Salen) (25 mg/kg)-induced acute liver and renal dysfunction. DFO (300 mg/kg) improves survival rate after systematic injection of a fatal dose of Fe(Salen) (200 mg/kg) in mice. DFO enables the use of higher Fe(Salen) doses to treat progressive states of cancer, and it also appears to decrease the acute side effects of Fe(Salen). This makes DFO a potential antidote candidate for Fe(Salen)-based cancer treatments, and this novel strategy could be widely used in minimally-invasive clinical settings.

Keywords: Anti-cancer; Antidote; Chelate; Deferoxamine (DFO); Fe(Salen).

MeSH terms

  • Acute Kidney Injury / chemically induced
  • Animals
  • Antidotes*
  • Antineoplastic Agents / administration & dosage
  • Antineoplastic Agents / adverse effects*
  • Antineoplastic Agents / toxicity*
  • Chelating Agents / administration & dosage
  • Chelating Agents / adverse effects*
  • Chelating Agents / toxicity*
  • Chemical and Drug Induced Liver Injury / etiology
  • Deferoxamine / pharmacology*
  • Deferoxamine / therapeutic use*
  • Dose-Response Relationship, Drug
  • Ethylenediamines / administration & dosage
  • Ethylenediamines / adverse effects*
  • Ethylenediamines / toxicity*
  • Humans
  • Iron / administration & dosage
  • Iron / adverse effects*
  • Iron / toxicity*
  • Iron Chelating Agents / pharmacology*
  • Iron Chelating Agents / therapeutic use*
  • Rabbits
  • Reactive Oxygen Species / metabolism
  • Tumor Cells, Cultured

Substances

  • Antidotes
  • Antineoplastic Agents
  • Chelating Agents
  • Ethylenediamines
  • Iron Chelating Agents
  • Reactive Oxygen Species
  • disalicylaldehyde ethylenediamine
  • Iron
  • Deferoxamine