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Published on: April 22, 2019
Xenobiotic Sulforaphane in Head and Neck Cancer: Beyond the Nrf2 Pathway
Alessandro Polizzi1, Rossella Rotondo2,3, Sabrina Donati Zeppa2
1Department of General Surgery and Surgical-Medical Specialties, School of Dentistry, University of Catania, 95124 Catania, Italy.
Abstract:
Head and neck cancers (HNCs) represent a major global health burden and remain associated with substantial morbidity and limited therapeutic options, particularly in advanced or recurrent disease. Increasing interest has focused on naturally derived bioactive compounds with potential chemopreventive and therapeutic properties. Sulforaphane, a dietary xenobiotic isothiocyanate derived from glucoraphanin in cruciferous vegetables, has attracted attention due to its ability to modulate redox balance, epigenetic regulation, and multiple oncogenic signaling pathways. This manuscript reviews current evidence regarding the biological effects of sulforaphane in HNCs. Particular attention is given to the molecular mechanisms underlying its modulation of the nuclear factor erythroid 2-related factor 2 (Nrf2) pathway, a key regulator of cellular antioxidant and detoxification responses that can be activated by sulforaphane. Several studies indicate that sulforaphane can inhibit tumor growth through several mechanisms beyond Nrf2 activation, including induction of apoptosis, cell cycle arrest, epigenetic modulation, and suppression of oncogenic signaling pathways. In addition, sulforaphane has been shown to enhance the efficacy of conventional treatments, including chemotherapy, radiotherapy, and photodynamic therapy. Overall, the literature suggests that sulforaphane may represent a promising chemopreventive or therapeutic adjunct in HNC, although further clinical investigation is required to clarify its translational potential.
Insights
Sulforaphane, found in cruciferous vegetables, shows potential in fighting head and neck cancers (HNCs). It may inhibit tumor growth and enhance conventional treatments, but more clinical research is needed.
Area of Science:
- Oncology
- Molecular Biology
- Nutritional Science
Background:
- Head and neck cancers (HNCs) pose a significant global health challenge with limited treatment options for advanced stages.
- Naturally derived compounds are being explored for their chemopreventive and therapeutic potential in HNCs.
- Sulforaphane, a compound from cruciferous vegetables, modulates key cellular pathways relevant to cancer.
Purpose of the Study:
- To review the current evidence on the biological effects of sulforaphane in head and neck cancers.
- To explore the molecular mechanisms of sulforaphane's action, particularly its modulation of the Nrf2 pathway.
- To assess sulforaphane's potential as a chemopreventive or therapeutic agent in HNC.
Main Methods:
- Review of existing scientific literature on sulforaphane and HNCs.
- Analysis of studies detailing sulforaphane's molecular mechanisms of action.
- Examination of research on sulforaphane's effects on tumor growth, apoptosis, cell cycle, and signaling pathways.
- Evaluation of studies investigating sulforaphane's impact on conventional cancer therapies.
Main Results:
- Sulforaphane modulates redox balance, epigenetic regulation, and oncogenic signaling pathways.
- It inhibits HNC growth via apoptosis induction, cell cycle arrest, and suppression of oncogenic pathways, extending beyond Nrf2 activation.
- Sulforaphane enhances the efficacy of chemotherapy, radiotherapy, and photodynamic therapy in HNC models.
- The nuclear factor erythroid 2-related factor 2 (Nrf2) pathway is a key target modulated by sulforaphane.
Conclusions:
- Sulforaphane exhibits promising anticancer properties against head and neck cancers through multiple molecular mechanisms.
- It may serve as a valuable adjunct to conventional treatments, improving therapeutic outcomes.
- Further clinical trials are essential to validate the translational potential of sulforaphane in HNC management.
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