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Vera Cappelletti
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Luigi Celio
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Emilio Bajetta
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Arianna Allevi
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Raffaella Longarini
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Patrizia Miodini
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Raffaella Villa
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Alessandra Fabbri
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Luigi Mariani
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Riccardo Giovanazzi
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Emanuele Galante
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Marco Greco
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Maria Grazia Daidone
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Introduction Most breast tumors express the estrogen receptor (ER), herein referred to as ER-α, which is associated with the likelihood of response to endocrine therapy and is considered, along with the progesterone receptor (PgR

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R J Santen
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R X Song
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Z Zhang
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R Kumar
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M-H Jeng
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A Masamura
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J Lawrence Jr
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L Berstein
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W Yue
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initially postulated that enhanced receptor-mediated transcription of genes related to cell proliferation might be involved. Indeed, the levels of estrogen receptor-α (ERα) increased four- to tenfold during long-term estradiol deprivation ( Jeng et al

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Penn Muluhngwi Department of Biochemistry and Molecular Genetics, Center for Genetics and Molecular Medicine, University of Louisville School of Medicine, Louisville, Kentucky 40292, USA

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Carolyn M Klinge Department of Biochemistry and Molecular Genetics, Center for Genetics and Molecular Medicine, University of Louisville School of Medicine, Louisville, Kentucky 40292, USA

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Introduction The sustained exposure to endogenous estrogens is involved in the initiation and progression of breast cancer ( Colditz 1998 ). The cellular effects of estrogens are mediated by estrogen receptors alpha and beta (ERα and ERβ) and their

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Emmanuelle Fleurot Normandie Univ, UNICAEN, OERECA, Caen, France

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Caroline Goudin Normandie Univ, UNICAEN, OERECA, Caen, France

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Vincent Hanoux Normandie Univ, UNICAEN, OERECA, Caen, France

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Pierre-Jacques Bonnamy Normandie Univ, UNICAEN, OERECA, Caen, France

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Jérôme Levallet Normandie Univ, UNICAEN, OERECA, Caen, France
Normandie Univ, UNICAEN, CEA, CNRS, ISTCT/CERVOxy Group, Caen, France

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transcription factors ERα and ERβ (encoded by ESR1 and ESR2, respectively) mediate the biological functions of estrogens, directly through binding to estrogen response elements (ERE) of target genes or through binding to transcription factors such as AP-1, SP1

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M Christine Bruce Department of Biochemistry and Medical Genetics, Manitoba Institute of Cell Biology, University of Manitoba and CancerCare Manitoba, 675 McDermot Avenue, Winnipeg, Manitoba, Canada R3E 0V9

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Danielle McAllister Department of Biochemistry and Medical Genetics, Manitoba Institute of Cell Biology, University of Manitoba and CancerCare Manitoba, 675 McDermot Avenue, Winnipeg, Manitoba, Canada R3E 0V9

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Leigh C Murphy Department of Biochemistry and Medical Genetics, Manitoba Institute of Cell Biology, University of Manitoba and CancerCare Manitoba, 675 McDermot Avenue, Winnipeg, Manitoba, Canada R3E 0V9

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(p70S6K1) has been shown to phosphorylate ERα ( Yamnik & Holz 2010 ) and under IGF1 stimulation p70S6K1 can be co-immunoprecipitated with ERα in ER+ breast cancer cells ( Becker et al . 2011 ). PPM1D/Wip1 is known for its p53 inhibitory effects and

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A Bardin
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N Boulle
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G Lazennec
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F Vignon
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P Pujol
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are mediated by estrogen receptor (ER)α and ERβ, which are members of the nuclear steroid receptor superfamily. ERα and ERβ classically mediate their action by ligand-dependent binding to the estrogen-response element (ERE) of target genes, leading to

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Paola Galluzzo Department of Biology, University ‘Roma Tre’, Viale G Marconi, 446,I-00146 Roma, Italy

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Francesco Caiazza Department of Biology, University ‘Roma Tre’, Viale G Marconi, 446,I-00146 Roma, Italy

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Sandra Moreno Department of Biology, University ‘Roma Tre’, Viale G Marconi, 446,I-00146 Roma, Italy

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Maria Marino Department of Biology, University ‘Roma Tre’, Viale G Marconi, 446,I-00146 Roma, Italy

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mediated by a complex signaling network rather than a single uniform mechanism. In fact, in addition to its role as gene transcription regulator ( Acevedo & Kraus 2004 ), sustained by the two estrogen receptors (ERα and ERβ ), E2 induces rapid, membrane

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Tesa M Severson Division of Molecular Pathology, the Netherlands Cancer Institute, Amsterdam, the Netherlands
Division of Molecular Carcinogenesis, the Netherlands Cancer Institute, Amsterdam, the Netherlands

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Wilbert Zwart Division of Molecular Pathology, the Netherlands Cancer Institute, Amsterdam, the Netherlands

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Introduction Male breast cancer is rare, accounting for around 1% of all breast cancers ( Siegel et al. 2016 ) and is frequently positive for ERα (91–95%) and/or PR (80–81%) ( Giordano et al. 2004 , Anderson et al. 2010 , Nilsson et

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Marie Mc Ilroy
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Fergal J Fleming
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Yvonne Buggy
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Arnold D K Hill
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Leonie S Young
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normal breast development and in the initiation and progression of breast cancer, hence, disruption of ER function is the main therapeutic strategy employed in targeting the disease. The ER is encoded for by two genes, ER-α and ER-β. Variation between the

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Amanda J M O’Donnell Cancer Research UK Centre, University of Edinburgh, Crewe Road South, Edinburgh EH4 2XR, UK

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Kenneth G Macleod Cancer Research UK Centre, University of Edinburgh, Crewe Road South, Edinburgh EH4 2XR, UK

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David J Burns Cancer Research UK Centre, University of Edinburgh, Crewe Road South, Edinburgh EH4 2XR, UK

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John F Smyth Cancer Research UK Centre, University of Edinburgh, Crewe Road South, Edinburgh EH4 2XR, UK

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Simon P Langdon Cancer Research UK Centre, University of Edinburgh, Crewe Road South, Edinburgh EH4 2XR, UK

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normal ovaries and in the development and progression of ovarian carcinoma, but the mechanisms of action remain unclear. The biological effects of estrogens are mediated by two forms of estrogen receptor (ER) that are encoded by separate genes, ERα and

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