Cancers, Volume 16, Issue 9
May-1 2024 - 175 articles
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Cover Story: The therapeutic potential of vitamin D3 in laryngeal cancer is widely debated. Some studies demonstrated a reduced risk of malignancy associated with high serum levels, while others observed no correlation between supplementation and prognosis. We hypothesized that the inconsistency of these reports is due to the tumor's local metabolism of serum vitamin D3. In this study, we demonstrated that Estrogen Receptor (ER)-positive and -negative laryngeal cancer cells can metabolize the circulating form of vitamin D3 into its active forms. We also show that the active metabolite produced, 24R, 25-dihydroxyvitamin D3, can regulate laryngeal cancer tumorigenesis in vitro. These findings indicate that the vitamin D metabolite acts via autocrine/paracrine signaling pathways correlated to ER levels. View this paper