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Mechanism of Action and Therapeutic Potential of Novel Adamantyl Retinoid-Related Molecules

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Cancer costs the life of over 6 M human beings from around the world every year. More than 1.3 million new cases are predicted to be diagnosed only in the USA during 2005 with over 570,000 deaths estimated. A better understanding of the molecular basis of carcinogenesis has facilitated progress towards improving early detection and prevention as well as the development of more efficient and specific treatments against certain types of cancer. However, very few successful anticancer agents exist today and aggressive tumors are still incurable. Retinoids are natural and synthetic derivatives of vitamin A, which have shown promise for the prevention and treatment of cancer because of their cell growth inhibition and differentiation activities. Unfortunately, their clinical use has been stalled by significant toxicity caused by the broad biological responses mediated by the nuclear retinoid receptors. Synthetic retinoid-related molecules containing an adamantyl group have been shown to induce apoptosis and show promising anticancer activity in animal models, therefore representing optimal leads for the development of novel retinoid-like anticancer drugs. These compounds induce apoptosis via the mithochondrial pathway and seem to function independently of nuclear retinoid receptor activity. In contrast, they have an effect on various cytosolic signaling pathways, including activation of stress kinases (cJun N-terminal kinase and p38 kinase) and inhibition of survival kinases (I κB kinase).

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Keywords: Atypical retinoids; I κB kinase inhibitor; adamantyl retinoid-related molecules; apoptosis; nuclear retinoid receptors; stress kinases

Document Type: Research Article

Affiliations: Sidney Kimmel Cancer Center, 10835 Altman Row, San Diego, CA 92121, USA.

Publication date: 01 May 2006

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  • Current Cancer Therapy Reviews publishes frontier reviews on all the latest advances in clinical oncology, cancer therapy and pharmacology. The journal's aim is to publish the highest quality review articles dedicated to clinical research in the field. The journal is essential reading for all researchers and clinicians in cancer therapy.
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