Journal of Pharmacological Sciences (Aug 2017)

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

  • Masanari Umemura,
  • Jeong-Hwan Kim,
  • Haruki Aoyama,
  • Yujiro Hoshino,
  • Hidenobu Fukumura,
  • Rina Nakakaji,
  • Itaru Sato,
  • Makoto Ohtake,
  • Taisuke Akimoto,
  • Masatoshi Narikawa,
  • Ryo Tanaka,
  • Takayuki Fujita,
  • Utako Yokoyama,
  • Masataka Taguri,
  • Satoshi Okumura,
  • Motohiko Sato,
  • Haruki Eguchi,
  • Yoshihiro Ishikawa

DOI
https://doi.org/10.1016/j.jphs.2017.07.002
Journal volume & issue
Vol. 134, no. 4
pp. 203 – 210

Abstract

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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.

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