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Dardenne, Etienne; Beltran, Himisha; Benelli, Matteo; Gayvert, Kaitlyn; Berger, Adeline; Puca, Loredana; Cyrta, Joanna; Sboner, Andrea; Noorzad, Zohal; MacDonald, Theresa; Cheung, Cynthia; Yuen, Ka Shing; Gao, Dong; Chen, Yu; Eilers, Martin; Mosquera, Juan-Miguel; Robinson, Brian D.; Elemento, Olivier; Rubin, Mark A.; Demichelis, Francesca; Rickman, David S.
Cancer cell, 10/2016, Letnik: 30, Številka: 4Journal Article
The transition from castration-resistant prostate adenocarcinoma (CRPC) to neuroendocrine prostate cancer (NEPC) has emerged as an important mechanism of treatment resistance. NEPC is associated with overexpression and gene amplification of MYCN (encoding N-Myc). N-Myc is an established oncogene in several rare pediatric tumors, but its role in prostate cancer progression is not well established. Integrating a genetically engineered mouse model and human prostate cancer transcriptome data, we show that N-Myc overexpression leads to the development of poorly differentiated, invasive prostate cancer that is molecularly similar to human NEPC. This includes an abrogation of androgen receptor signaling and induction of Polycomb Repressive Complex 2 signaling. Altogether, our data establishes N-Myc as an oncogenic driver of NEPC. Display omitted •N-Myc drives the NEPC phenotype and associated molecular program•N-Myc abrogates AR signaling, which results in enhanced AKT activity•N-Myc redirects EZH2 activity and sensitizes cells to EZH2 inhibitors•N-Myc interacts with Aurora-A, which facilitates N-Myc target gene expression Dardenne et al. demonstrate that N-Myc overexpression in pre-clinical models drives aggressive prostate cancer that mimics human neuroendocrine prostate cancer, including reduced AR signaling and enhanced PRC2 target gene repression, and sensitizes cells to an Aurora-A inhibitor and EZH2 SET domain inhibitors.
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in: SICRIS
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