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Usage Information

Endothelial NOS, estrogen receptor β, and HIFs cooperate in the activation of a prognostic transcriptional pattern in aggressive human prostate cancer
Simona Nanni, … , Massimo Loda, Antonella Farsetti
Simona Nanni, … , Massimo Loda, Antonella Farsetti
Published April 13, 2009
Citation Information: J Clin Invest. 2009;119(5):1093-1108. https://doi.org/10.1172/JCI35079.
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Research Article Oncology

Endothelial NOS, estrogen receptor β, and HIFs cooperate in the activation of a prognostic transcriptional pattern in aggressive human prostate cancer

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Abstract

The identification of biomarkers that distinguish between aggressive and indolent forms of prostate cancer (PCa) is crucial for diagnosis and treatment. In this study, we used cultured cells derived from prostate tissue from patients with PCa to define a molecular mechanism underlying the most aggressive form of PCa that involves the functional activation of eNOS and HIFs in association with estrogen receptor β (ERβ). Cells from patients with poor prognosis exhibited a constitutively hypoxic phenotype and increased NO production. Upon estrogen treatment, formation of ERβ/eNOS, ERβ/HIF-1α, or ERβ/HIF-2α combinatorial complexes led to chromatin remodeling and transcriptional induction of prognostic genes. Tissue microarray analysis, using an independent cohort of patients, established a hierarchical predictive power for these proteins, with expression of eNOS plus ERβ and nuclear eNOS plus HIF-2α being the most relevant indicators of adverse clinical outcome. Genetic or pharmacologic modulation of eNOS expression and activity resulted in reciprocal conversion of the transcriptional signature in cells from patients with bad or good outcome, respectively, highlighting the relevance of eNOS in PCa progression. Our work has considerable clinical relevance, since it may enable the earlier diagnosis of aggressive PCa through routine biopsy assessment of eNOS, ERβ, and HIF-2α expression. Furthermore, proposing eNOS as a therapeutic target fosters innovative therapies for PCa with NO inhibitors, which are employed in preclinical trials in non-oncological diseases.

Authors

Simona Nanni, Valentina Benvenuti, Annalisa Grasselli, Carmen Priolo, Aurora Aiello, Stefania Mattiussi, Claudia Colussi, Vittoria Lirangi, Barbara Illi, Manuela D’Eletto, Anna Maria Cianciulli, Michele Gallucci, Piero De Carli, Steno Sentinelli, Marcella Mottolese, Paolo Carlini, Lidia Strigari, Stephen Finn, Elke Mueller, Giorgio Arcangeli, Carlo Gaetano, Maurizio C. Capogrossi, Raffaele Perrone Donnorso, Silvia Bacchetti, Ada Sacchi, Alfredo Pontecorvi, Massimo Loda, Antonella Farsetti

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Figure 396 13
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