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<dc:title xml:lang="en">Vitamin D effects on prostate cancer progression</dc:title>
<dcterms:alternative xml:lang="fr">Effets de la vitamine D sur la progression du cancer de la prostate</dcterms:alternative>
<dc:subject xml:lang="fr">Cancer de la prostate</dc:subject>
<dc:subject xml:lang="fr">Vitamine D</dc:subject>
<dc:subject xml:lang="fr">Stress oxydatif</dc:subject>
<dc:subject xml:lang="fr">Microenvironnement tumoral</dc:subject>
<dc:subject xml:lang="fr">Métastases</dc:subject>
<dc:subject xml:lang="fr">Résistance au docétaxel</dc:subject>
<dc:subject xml:lang="en">Prostate cancer</dc:subject>
<dc:subject xml:lang="en">Vitamin D</dc:subject>
<dc:subject xml:lang="en">Oxidative stress</dc:subject>
<dc:subject xml:lang="en">Tumor microenvironment</dc:subject>
<dc:subject xml:lang="en">Metastasis</dc:subject>
<dc:subject xml:lang="en">Docetaxel resistance</dc:subject>
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<dcterms:abstract xml:lang="fr">Le cancer de la prostate (CaP) est l’un des cancers le plus mortel chez les hommes. Le CaP avancé est traité avec les inhibiteurs du récepteur des androgènes ou la chimiothérapie (chimiothérapie), mais la plupart des patients développent des résistances. Ainsi, des nouvelles stratégies thérapeutiques sont nécessaires pour améliorer la prise en charge du CaP. Les faibles niveaux circulants de la vitamine D ou de son récepteur VDR dans les cellules épithéliales prostatiques (PECs) sont corrélés avec la gravité du CaP, mais le mécanisme sous-jacent n'est pas décrit. Cette étude montre que VDR réduit la prolifération des PECs dans un modèle murin de CaP, les souris Pten(i)pe-/-, via modération du stress oxydant. De plus, le VDR dans les PECs réduit le recrutement des neutrophiles, qui sont une cible thérapeutique pour la dissémination du CaP. Par ailleurs, la combinaison d'un agoniste de VDR avec le docétaxel réduit efficacement les volumes tumoraux du CaP chimiorésistant. Pour conclure, ce travail met en évidence comment la vitamine D ralentit la progression du CaP et suggère de nouvelles stratégies thérapeutiques pour cette maladie.</dcterms:abstract>
<dcterms:abstract xml:lang="en">Prostate cancer (PCa) is one of the leading causes of cancer-related deaths in men. Androgen receptor signaling inhibitors are the gold standard treatment for advanced PCa, but most patients develop castration-resistant prostate cancer (CRPC). The treatment of choice for CRPC is the chemotherapy (docetaxel), but the overall survival is only about one year. Thus, novel therapeutic strategies are required to improve PCa care. Low circulating vitamin D levels and reduced expression of its receptor VDR in prostatic epithelial cells (PECs) correlate with PCa severity, but the underlying mechanism is unclear. This study shows that VDR in PECs of Pten(i)pe-/- mice, a model of PCa, reduces cell proliferation via oxidative stress attenuation. Furthermore, VDR in PECs limits the recruitment of neutrophils, that are shown to be therapeutic target for PCa dissemination. Additionally, combining a VDR agonist with docetaxel effectively reduces tumor volumes in chemoresistant CRPC xenografts. Overall, this work highlights how vitamin D signaling slows PCa progression and suggests new therapeutic strategies for advanced PCa.</dcterms:abstract>
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