Comparative genomics identifies the mouse Bmp3 promoter and an upstream evolutionary conserved region (ECR) in mammals

• Published in: PloS one Vol. 8; no. 2; p. e57840
• Main Authors: Lowery, Jonathan W, Lavigne, Anna W, Kokabu, Shoichiro, Rosen, Vicki
• Format: Journal Article
• Language: English
• Published: United States Public Library of Science 22.02.2013; Public Library of Science (PLoS)
• Subjects: Activin; Analysis; Animal genetics; Animals; Binding Sites; Biocompatibility; Bioinformatics; Biological Evolution; Biology; Biomedical materials; Bone morphogenetic protein 3; Bone Morphogenetic Protein 3 - genetics; Bone Morphogenetic Protein 3 - metabolism; Bone morphogenetic proteins; Cell Line; Cloning; Conserved Sequence; Dentistry; Deoxyribonucleic acid; Developmental biology; DNA; Drosophila; Drug development; Enzymes; Evolution; Evolutionary conservation; Gene expression; Genomes; Genomic analysis; Genomics; Genomics - methods; HEK293 Cells; Humans; Insects; Kinases; Ligands; Mammals; Mammals - metabolism; Medicine; Mice; Molecular biology; Neural networks; Osteoblasts; Plasmids; Promoter Regions, Genetic; Rats; Regulatory sequences; Regulatory Sequences, Nucleic Acid; Signal transduction; Signaling; Transcription factors; Transcription Factors - genetics; Transcription Factors - metabolism; Upstream; Massachusetts
• ISSN: 1932-6203; 1932-6203
• DOI: 10.1371/journal.pone.0057840

The Bone Morphogenetic Protein (BMP) pathway is a multi-member signaling cascade whose basic components are found in all animals. One member, BMP3, which arose more recently in evolution and is found only in deuterostomes, serves a unique role as an antagonist to both the canonical BMP and Activin pathways. However, the mechanisms that control BMP3 expression, and the cis-regulatory regions mediating this regulation, remain poorly defined. With this in mind, we sought to identify the Bmp3 promoter in mouse (M. musculus) through functional and comparative genomic analyses. We found that the minimal promoter required for expression in resides within 0.8 kb upstream of Bmp3 in a region that is highly conserved with rat (R. norvegicus). We also found that an upstream region abutting the minimal promoter acts as a repressor of the minimal promoter in HEK293T cells and osteoblasts. Strikingly, a portion of this region is conserved among all available eutherian mammal genomes (47/47), but not in any non-eutherian animal (0/136). We also identified multiple conserved transcription factor binding sites in the Bmp3 upstream ECR, suggesting that this region may preserve common cis-regulatory elements that govern Bmp3 expression across eutherian mammals. Since dysregulation of BMP signaling appears to play a role in human health and disease, our findings may have application in the development of novel therapeutics aimed at modulating BMP signaling in humans.