Differential regulation of GPR54 transcription by specificity protein-1 and partial estrogen response element in mouse pituitary cells.
Precise spatial and temporal expression of the recently identified G-protein coupled receptor GPR54 is critical for proper reproductive function and metastasis suppression. However, regulatory factors that control GPR54 expression remain unknown. Thus, the identification of these cis-acting DNA elements can provide insight into the role of GPR54 in reproduction and cancer. Using luciferase reporter, electrophoretic mobility shift, and chromatin immunoprecipitation assays, we demonstrate that three SP1 sites and a partial estrogen response element modulate mouse GPR54 (mGPR54) promoter activity. Supporting experiments show transcription factor SP1 binds directly to the mGPR54 promoter region and activates gene expression. In conclusion, these novel findings now identify factors that regulate activity of the mGPR54 promoter, and these factors are highly conserved across multiple mammalian species.
DeFino
Mia C
MC
Department of Pharmacology, Box 357280, University of Washington, Seattle, WA 98195-7280, USA.
Wacker
Jennifer L
JL
Lyssand
John S
JS
Wang
Edith H
EH
Hague
Chris
C
D000818:Animals; D001483:Base Sequence; D002460:Cell Line; D004967:Estrogens / Q000378:metabolism / Q000494:pharmacology; D017930:Genes, Reporter; D016678:Genome; D008156:Luciferases / Q000235:genetics; D051379:Mice; D008969:Molecular Sequence Data; D010902:Pituitary Gland / Q000166:cytology / Q000187:drug effects / Q000378:metabolism*; D043562:Receptors, G-Protein-Coupled / Q000235:genetics*; D000074502:Receptors, Kisspeptin-1; D020218:Response Elements; D016329:Sp1 Transcription Factor / Q000378:metabolism*; D014158:Transcription, Genetic; D015533:Transcriptional Activation
D004967:Estrogens; C492248:Kiss1r protein, mouse; D043562:Receptors, G-Protein-Coupled; D000074502:Receptors, Kisspeptin-1; D016329:Sp1 Transcription Factor; D008156:Luciferases