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Copper Compounds in Anticancer Strategies

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The chemical properties of copper allow it to take part in many biological functions such as electron transfer, catalysis, and structural shaping. The ability to cycle between +1 and +2 oxidation state is one of the features that has been exploited by organisms throughout the evolutionary process. Since copper is potentially toxic to cells also a finely controlled mechanism for copper handling has evolved.

On the other side, many copper complexes were synthesized and tested for their anticancer activity in vitro and in vivo. Their ability to kill cancer cells is mainly related to the induction of an oxidative stress, but recently it emerged their ability to inhibit the proteasome, a protein complex whose proteolitic activity is needed by several cellular process.

It has generally been described that the toxic effects of copper complexes leads to cell death either by necrosis or through the activation of the apoptotic process. Evidences are rising about the ability of some copper compounds to induce alternative non-apoptotic form of programmed cell death.

Since copper is indispensable for the formation of new blood vessels, angiogenesis, a different antitumor approach based on the administration of copper sequestering agents has been attempted and its effectiveness is currently under evaluation by clinical trials.

The proven essentiality of copper for angiogenesis, together with the marked sensitivity shown by several cancer cell lines to the copper toxicity, open a new perspective in the anticancer strategy: exploiting the tumor need of copper to accumulate toxic amount of the metal inside its cells.

Keywords: Copper complex; ROS; apoptosis; paraptosis; proteasome inhibition

Document Type: Research Article

DOI: http://dx.doi.org/10.2174/092986709787846532

Affiliations: Dipartimento di Chimica Generale ed Inorganica, Chimica Analitica, Chimica Fisica, Universita degli Studi di Parma, v.le G.P. Usberti 17/a, I 43100 Parma, Italy.

Publication date: April 1, 2009

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  • Current Medicinal Chemistry covers all the latest and outstanding developments in medicinal chemistry and rational drug design. Each issue contains a series of timely in-depth reviews written by leaders in the field covering a range of the current topics in medicinal chemistry. Current Medicinal Chemistry is an essential journal for every medicinal chemist who wishes to be kept informed and up-to-date with the latest and most important developments.
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