title: Development of Novel Cell Lines for High-Throughput Screening to Detect Estrogen-Related Receptor Alpha Modulators.
abstract: Estrogen-related receptor alpha (ERRα), the first orphan nuclear receptor discovered, is crucial for the control of cellular energy metabolism. ERRα and its coactivator, peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α), are required for rapid energy production in response to environmental challenges. They have been implicated in the etiology of metabolic disorders such as type 2 diabetes and metabolic syndrome. ERRα also plays a role in the pathogenesis of breast cancer. Identification of compounds that modulate ERRα signaling may elucidate environmental factors associated with these diseases. Therefore, we developed stable cell lines containing an intact ERRα signaling pathway, with and without the coactivator PGC-1α, to use as high-throughput screening tools to detect ERRα modulators. The lentiviral PGC-1α expression constructs and ERRα multiple hormone response element (MHRE) reporters were introduced into HEK293T cells that express endogenous ERRα. A cell line expressing the reporter alone was designated "ERR." A second cell line expressing both reporter and PGC-1α was named "PGC/ERR." Initial screenings of the Library of Pharmacologically Active Compounds (LOPAC) identified 33 ERR and 22 PGC/ERR agonists, and 54 ERR and 15 PGC/ERR antagonists. Several potent ERRα agonists were dietary plant compounds (e.g., genistein). In conclusion, these cell lines are suitable for high-throughput screens to identify environmental chemicals affecting metabolic pathways and breast cancer progression.
authors.affiliation: 1 Division of the National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, Durham, NC, USA.
authors.forename: Christina T
authors.initials: CT
authors.lastname: Teng
authors.affiliation: 1 Division of the National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, Durham, NC, USA.
authors.forename: Jui-Hua
authors.initials: JH
authors.lastname: Hsieh
authors.affiliation: 2 National Institutes of Health Chemical Genomics Center, NIH Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD, USA.
authors.forename: Jinghua
authors.initials: J
authors.lastname: Zhao
authors.affiliation: 2 National Institutes of Health Chemical Genomics Center, NIH Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD, USA.
authors.forename: Ruili
authors.initials: R
authors.lastname: Huang
authors.affiliation: 2 National Institutes of Health Chemical Genomics Center, NIH Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD, USA.
authors.forename: Menghang
authors.initials: M
authors.lastname: Xia
authors.affiliation: 3 Division of Intramural Research, Laboratory of Neurobiology, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, Durham, NC, USA.
authors.forename: Negin
authors.initials: N
authors.lastname: Martin
authors.affiliation: 1 Division of the National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, Durham, NC, USA.
authors.forename: Xiaohua
authors.initials: X
authors.lastname: Gao
authors.affiliation: 1 Division of the National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, Durham, NC, USA.
authors.forename: Darlene
authors.initials: D
authors.lastname: Dixon
authors.affiliation: 1 Division of the National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, Durham, NC, USA.
authors.forename: Scott S
authors.initials: SS
authors.lastname: Auerbach
authors.affiliation: 1 Division of the National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, Durham, NC, USA.
authors.forename: Kristine L
authors.initials: KL
authors.lastname: Witt
authors.affiliation: 1 Division of the National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, Durham, NC, USA.
authors.forename: B Alex
authors.initials: BA
authors.lastname: Merrick
mesh_terms: D045744:Cell Line, Tumor; D004305:Dose-Response Relationship, Drug; D055808:Drug Discovery / Q000379:methods; D004734:Energy Metabolism; D020847:Estrogen Receptor Modulators / Q000494:pharmacology*; D015870:Gene Expression; D017930:Genes, Reporter; D005822:Genetic Vectors / Q000235:genetics; D057809:HEK293 Cells; D057166:High-Throughput Screening Assays; D006801:Humans; D016086:Lentivirus / Q000235:genetics; D011960:Receptors, Estrogen / Q000378:metabolism*; D015203:Reproducibility of Results; D015398:Signal Transduction; D000097983:ERRalpha Estrogen-Related Receptor
chemical_list: D020847:Estrogen Receptor Modulators; D011960:Receptors, Estrogen; D000097983:ERRalpha Estrogen-Related Receptor
keywords: ERRα signaling; LOPAC library; PGC-1α; metabolic syndrome; quantitative high-throughput screening; stable cell lines