8p9w | pdb_00008p9w
vitamin D receptor complex with Xe4MeCF3 analog
Structural highlights
FunctionVDRA_DANRE Nuclear hormone receptor. Transcription factor that mediates the action of vitamin D3 by controlling the expression of hormone sensitive genes. Regulates transcription of hormone sensitive genes via its association with the WINAC complex, a chromatin-remodeling complex. Plays a central role in calcium homeostasis.[1] Publication Abstract from PubMedBACKGROUND AND PURPOSE: Castration-resistant prostate cancer (CRPC) is a common male malignancy that requires new therapeutic strategies due to acquired resistance to its first-line treatment, docetaxel. The benefits of vitamin D on prostate cancer (PCa) progression have been previously reported. This study aimed to investigate the effects of vitamin D on chemoresistance in CRPC. EXPERIMENTAL APPROACH: Structure function relationships of potent vitamin D analogues were determined. The combination of the most potent analogue and docetaxel was explored in chemoresistant primary PCa spheroids and in a xenograft mouse model derived from a patient with a chemoresistant CRPC. KEY RESULTS: Here, we show that Xe4MeCF3 is more potent than the natural ligand to induce vitamin D receptor (VDR) transcriptional activities and that it has a larger therapeutic window. Moreover, we demonstrate that VDR agonists restore docetaxel sensitivity in PCa spheroids. Importantly, Xe4MeCF3 reduces tumour growth in a chemoresistant CRPC patient-derived xenograft. In addition, this treatment targets signalling pathways associated with cancer progression in the remaining cells. CONCLUSION AND IMPLICATIONS: Taken together, these results unravel the potency of VDR agonists to overcome chemoresistance in CRPC and open new avenues for the clinical management of PCa. A vitamin D-based strategy overcomes chemoresistance in prostate cancer.,Len-Tayon K, Beraud C, Fauveau C, Belorusova AY, Chebaro Y, Mourino A, Massfelder T, Chauchereau A, Metzger D, Rochel N, Laverny G Br J Pharmacol. 2024 Jul 9. doi: 10.1111/bph.16492. PMID:38982588[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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