Abstract
Epidemiological studies have revealed an inverse correlation between the intake of cruciferous vegetables and the risk of certain types of cancer. In animal studies, results suggest that the anti-cancerous effect of cruciferous vegetables is due to isothiocyanates that exist as thioglucoside conjugates in a variety of edible plants, including broccoli cabbage for example. Among isothiocyanates (ITC), Sulforaphane (SF) has received a great deal of interest due to its potent anti-tumoral properties in carcinogen-treated animals. The molecular pathways mediating the effects of SF have not been fully elucidated. However, many studies have shown that SF (as well as other ITCs) can induce phase II drug metabolizing enzymes in vitro as well as in animals. This commonly occurs via the activation of a basic leucine zipper transcription factor, Nrf2. In addition, accumulating evidence now indicates that SF can inhibit the proliferation of cancer cells in culture through the induction of cell cycle arrest via the regulation of cell cycle protein levels and/or cyclindependent kinase activity, tubulin polymerization and histone acetylation. Furthermore, ITCs have been shown to induce apoptotic cell death via a P53 dependent or independent pathway. Here, it is proposed to review the different intracellular targets involved in the in vitro effects of SF in various cancer cell lines. The relationship will then be discussed that exists between the various cell signaling pathways involved in this effect, and finally, the important aspects will be identified that must be addressed to fully understand the exact mechanism of action of SF.
Keywords: Sulforaphane, cell cycle, apoptosis, signal transduction, Nrf2, reactive oxygen species
Current Cancer Drug Targets
Title: Signaling Pathways and Intracellular Targets of Sulforaphane Mediating Cell Cycle Arrest and Apoptosis
Volume: 6 Issue: 2
Author(s): L. Gamet-Payrastre
Affiliation:
Keywords: Sulforaphane, cell cycle, apoptosis, signal transduction, Nrf2, reactive oxygen species
Abstract: Epidemiological studies have revealed an inverse correlation between the intake of cruciferous vegetables and the risk of certain types of cancer. In animal studies, results suggest that the anti-cancerous effect of cruciferous vegetables is due to isothiocyanates that exist as thioglucoside conjugates in a variety of edible plants, including broccoli cabbage for example. Among isothiocyanates (ITC), Sulforaphane (SF) has received a great deal of interest due to its potent anti-tumoral properties in carcinogen-treated animals. The molecular pathways mediating the effects of SF have not been fully elucidated. However, many studies have shown that SF (as well as other ITCs) can induce phase II drug metabolizing enzymes in vitro as well as in animals. This commonly occurs via the activation of a basic leucine zipper transcription factor, Nrf2. In addition, accumulating evidence now indicates that SF can inhibit the proliferation of cancer cells in culture through the induction of cell cycle arrest via the regulation of cell cycle protein levels and/or cyclindependent kinase activity, tubulin polymerization and histone acetylation. Furthermore, ITCs have been shown to induce apoptotic cell death via a P53 dependent or independent pathway. Here, it is proposed to review the different intracellular targets involved in the in vitro effects of SF in various cancer cell lines. The relationship will then be discussed that exists between the various cell signaling pathways involved in this effect, and finally, the important aspects will be identified that must be addressed to fully understand the exact mechanism of action of SF.
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Cite this article as:
Gamet-Payrastre L., Signaling Pathways and Intracellular Targets of Sulforaphane Mediating Cell Cycle Arrest and Apoptosis, Current Cancer Drug Targets 2006; 6 (2) . https://dx.doi.org/10.2174/156800906776056509
DOI https://dx.doi.org/10.2174/156800906776056509 |
Print ISSN 1568-0096 |
Publisher Name Bentham Science Publisher |
Online ISSN 1873-5576 |
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