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Carotenoids and lung cancer prevention
Sudipta Veeramachaneni1,Xiang-Dong Wang1
1
Nutrition and Cancer Biology Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, 711 Washington Street, Boston, MA 02111, USA
DOI: 10.2741/S25 Volume 1 Issue 1, pp.258-274
Published: 01 June 2009
(This article belongs to the Special Issue Diet, nutrition and cancer prevention)
Abstract

Understanding the molecular actions of carotenoids is critical for human studies involving carotenoids for prevention of lung cancer and cancers at other tissue sites. While the original hypothesis prompting the beta carotene intervention trials was that beta carotene exerts beneficial effects through antioxidant activity, the harmful effects of beta carotene led to further animal and cell culture studies showing that the free radical rich but antioxidant poor environment of smoker's lungs could decrease the stability of the beta carotene molecule and increase beta carotene oxidative metabolites or decomposition products. In addition, the beneficial vs. detrimental effects of carotenoids are related to the carotenoid dose administered in vivo, and the tissue accumulation of carotenoids and their metabolites. This review will discuss the recent understanding that the biological functions of carotenoids are mediated via their oxidative metabolites through their effects on several important cellular signaling pathways and molecular targets, as well as smoke-related lung cancer.

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Sudipta Veeramachaneni, Xiang-Dong Wang. Carotenoids and lung cancer prevention. Frontiers in Bioscience-Scholar. 2009. 1(1); 258-274.