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Hepcidin regulation in prostate and its disruption in prostate cancer #MMPMID25858146
Tesfay L; Clausen KA; Kim JW; Hegde P; Wang X; Miller LD; Deng Z; Blanchette N; Arvedson T; Miranti CK; Babitt JL; Lin HY; Peehl DM; Torti FM; Torti SV
Cancer Res 2015[Jun]; 75 (11): 2254-63 PMID25858146show ga
Hepcidin is a circulating peptide hormone made by the liver that is a central regulator of systemic iron uptake and recycling. Here we report that prostate epithelial cells also synthesize hepcidin, and that synthesis and secretion of hepcidin are markedly increased in prostate cancer cells and tissue. Prostatic hepcidin functions as an autocrine hormone, decreasing cell surface ferroportin, an iron exporter, increasing intracellular iron retention, and promoting prostate cancer cell survival. Synthesis of hepcidin in prostate cancer is controlled by a unique intersection of pathways that involves BMP4/7, IL6, Wnt, and the dual BMP and Wnt antagonist, SOSTDC1. Epigenetic silencing of SOSTDC1 through methylation is increased in prostate cancer, and is associated with accelerated disease progression in prostate cancer patients. These results establish a new connection between iron metabolism and prostate cancer, and suggest that prostatic dysregulation of hepcidin contributes to prostate cancer growth and progression.