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S Kerkhofs Molecular Endocrinology Laboratory, Department of Molecular Cell Biology, University of Leuven, Campus Gasthuisberg O&N1, PO Box 901, Herestraat 49, BE-3000 Leuven, Belgium

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S Denayer Molecular Endocrinology Laboratory, Department of Molecular Cell Biology, University of Leuven, Campus Gasthuisberg O&N1, PO Box 901, Herestraat 49, BE-3000 Leuven, Belgium

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A Haelens Molecular Endocrinology Laboratory, Department of Molecular Cell Biology, University of Leuven, Campus Gasthuisberg O&N1, PO Box 901, Herestraat 49, BE-3000 Leuven, Belgium

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F Claessens Molecular Endocrinology Laboratory, Department of Molecular Cell Biology, University of Leuven, Campus Gasthuisberg O&N1, PO Box 901, Herestraat 49, BE-3000 Leuven, Belgium

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differentiation of male urogenital structures (male external genitalia, urethra, and prostate; Wilson et al . 1993 , Nef & Parada 2000 ). To mediate their actions, testosterone, and DHT bind to the intracellular androgen receptor (AR), a ligand

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Seung Chul Kim Department of Obstetrics and Gynecology, Biomedical Research Institute, Pusan National University School of Medicine, Busan, Republic of Korea

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Mee-Na Park Department of Biomaterials Science, College of Natural Resources & Life Science/Life and Industry Convergence Research Institute, Pusan National University, Republic of Korea

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Young Joo Lee Department of Obstetrics and Gynecology, Biomedical Research Institute, Pusan National University School of Medicine, Busan, Republic of Korea

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Jong Kil Joo Department of Obstetrics and Gynecology, Biomedical Research Institute, Pusan National University School of Medicine, Busan, Republic of Korea

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Beum-Soo An Department of Biomaterials Science, College of Natural Resources & Life Science/Life and Industry Convergence Research Institute, Pusan National University, Republic of Korea

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placenta are associated with complications such as preeclampsia and preterm delivery ( Albrecht & Pepe 2010 ). Estrogen acts by binding to its receptor, estrogen receptor (ER). ER exists in two main forms, ERα (ESR1) and ERβ (ESR2), which have distinct

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B Horard
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JM Vanacker
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The nuclear receptor family comprises ligand-dependent and orphan receptors. To the latter group belong the estrogen receptor-related receptors (ERRs) for which conflicting results have been published concerning the nature (constitutive or liganded) of their transcriptional activities. ERRs interfere in various ways, positively and negatively, with estrogen signaling. Moreover recent data analyzing ERR expression in human breast tumors have proposed ERRalpha and ERRgamma as prognostic markers of these cancers. The identification of modulators (positive or negative) of ERR activities would therefore be highly useful in our understanding of estrogen-related pathologies. The purpose of this review is to summarize our knowledge of the nature of ERR activities and progresses in identifying synthetic ERR modulators.

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Eliza A Walthers Department of Zoology, Oregon State University, Corvallis, OR 97331, USA

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C Samuel Bradford Department of Zoology, Oregon State University, Corvallis, OR 97331, USA

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Frank L Moore Department of Zoology, Oregon State University, Corvallis, OR 97331, USA

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Introduction The opioid receptor-like (ORL1; also called NOP) receptor is a G-protein-coupled receptor (GPCR) that shares high sequence identity with the three classically recognized opioid receptor types, μ, δ, and κ ( Mollereau et

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Ingrid Langer Department of Biological Chemistry and Nutrition, Faculty of Medicine, Université Libre de Bruxelles, Bat GE, CP 611, 808 Route de Lennik, B-1070 Brussels, Belgium

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Christelle Langlet Department of Biological Chemistry and Nutrition, Faculty of Medicine, Université Libre de Bruxelles, Bat GE, CP 611, 808 Route de Lennik, B-1070 Brussels, Belgium

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Patrick Robberecht Department of Biological Chemistry and Nutrition, Faculty of Medicine, Université Libre de Bruxelles, Bat GE, CP 611, 808 Route de Lennik, B-1070 Brussels, Belgium

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system ( Gomariz et al. 2001 ). The effects of VIP are mediated through interaction with two receptor subclasses named VPAC 1 and VPAC 2 receptors ( Harmar et al. 1998 ). These receptors are members of the G-protein-coupled receptor (GPCR)-B family

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C Samuel Bradford Department of Zoology, 3029 Cordley Hall, Oregon State University, Corvallis, Oregon 97331, USA

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Eliza A Walthers Department of Zoology, 3029 Cordley Hall, Oregon State University, Corvallis, Oregon 97331, USA

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Brian T Searcy Department of Zoology, 3029 Cordley Hall, Oregon State University, Corvallis, Oregon 97331, USA

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Frank L Moore Department of Zoology, 3029 Cordley Hall, Oregon State University, Corvallis, Oregon 97331, USA

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Introduction Kappa (κ), delta (δ), mu (μ) and ORL1 (opioid receptor-like) represent the four main classes of opioid receptors, which are defined and distinguished by primary structures, anatomical distributions, pharmacological

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Carolin L Piechowski Institute of Experimental Pediatric Endocrinology, Charité-Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, Augustenburger Platz 1, 13353 Berlin, Germany

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Anne Rediger Institute of Experimental Pediatric Endocrinology, Charité-Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, Augustenburger Platz 1, 13353 Berlin, Germany

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Christina Lagemann Institute of Experimental Pediatric Endocrinology, Charité-Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, Augustenburger Platz 1, 13353 Berlin, Germany

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Jessica Mühlhaus Institute of Experimental Pediatric Endocrinology, Charité-Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, Augustenburger Platz 1, 13353 Berlin, Germany

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Anne Müller Institute of Experimental Pediatric Endocrinology, Charité-Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, Augustenburger Platz 1, 13353 Berlin, Germany

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Juliane Pratzka Institute of Experimental Pediatric Endocrinology, Charité-Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, Augustenburger Platz 1, 13353 Berlin, Germany

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Patrick Tarnow Institute of Experimental Pediatric Endocrinology, Charité-Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, Augustenburger Platz 1, 13353 Berlin, Germany

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Annette Grüters Institute of Experimental Pediatric Endocrinology, Charité-Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, Augustenburger Platz 1, 13353 Berlin, Germany

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Heiko Krude Institute of Experimental Pediatric Endocrinology, Charité-Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, Augustenburger Platz 1, 13353 Berlin, Germany

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Gunnar Kleinau Institute of Experimental Pediatric Endocrinology, Charité-Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, Augustenburger Platz 1, 13353 Berlin, Germany

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Heike Biebermann Institute of Experimental Pediatric Endocrinology, Charité-Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, Augustenburger Platz 1, 13353 Berlin, Germany

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Introduction The melanocortin-4 receptor (MC4R) is encoded by a single-exon gene and is primarily expressed in the hypothalamic paraventricular nucleus, spinal cord, sympathetic preganglionic neurons, brain stem, and penis ( Van der Ploeg et al

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Christopher J Millard Henry Wellcome Laboratories of Structural Biology, Department of Biochemistry, University of Leicester, Leicester LE1 9HN, UK

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Peter J Watson Henry Wellcome Laboratories of Structural Biology, Department of Biochemistry, University of Leicester, Leicester LE1 9HN, UK

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Louise Fairall Henry Wellcome Laboratories of Structural Biology, Department of Biochemistry, University of Leicester, Leicester LE1 9HN, UK

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John W R Schwabe Henry Wellcome Laboratories of Structural Biology, Department of Biochemistry, University of Leicester, Leicester LE1 9HN, UK

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Historical perspective Nuclear receptors are a large family of DNA-binding transcription factors that are recruited to specific DNA sequences in the genome and regulate the expression of genes in the proximity (<1 million base pairs) of these sites

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Douglas R Houston Institute of Quantitative Biology, Biochemistry, and Biotechnology, School of Biological Sciences, University of Edinburgh, Edinburgh, UK

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Jane G Hanna Institute of Quantitative Biology, Biochemistry, and Biotechnology, School of Biological Sciences, University of Edinburgh, Edinburgh, UK

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J Constance Lathe Program in Neuroscience, University of Glasgow, Glasgow, UK

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Stephen G Hillier Medical Research Council Centre for Reproductive Health, University of Edinburgh, Edinburgh, UK

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Richard Lathe Division of Infection Medicine, University of Edinburgh, Edinburgh, UK

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Introduction Nuclear receptors (NRs) are essential to animal life, but their evolutionary origins are unknown. NRs are present in Metazoan species including sponges, insects, and vertebrates, but not in Archaea, bacteria, fungi, or plants. NRs

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Davide Calebiro Rudolf Virchow Center, DFG-Research Center for Experimental Biomedicine and Institute of Pharmacology and Toxicology, University of Würzburg, Versbacher Straße 9, 97078 Würzburg, Germany

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Viacheslav O Nikolaev Rudolf Virchow Center, DFG-Research Center for Experimental Biomedicine and Institute of Pharmacology and Toxicology, University of Würzburg, Versbacher Straße 9, 97078 Würzburg, Germany

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Martin J Lohse Rudolf Virchow Center, DFG-Research Center for Experimental Biomedicine and Institute of Pharmacology and Toxicology, University of Würzburg, Versbacher Straße 9, 97078 Würzburg, Germany

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Introduction G protein-coupled receptors (GPCRs) constitute the major family of cell surface receptors. They comprise receptors for light, taste, and smell as well as receptors for ions, small transmitters, peptides, and large protein hormones

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