title: Expression of Arnt and Arnt2 mRNA in developing murine tissues.
abstract: The basic helix-loop-helix (bHLH-PAS) proteins aryl hydrocarbon receptor nuclear translocator (Arnt) and Arnt2 are transcriptional regulators that function as dimerizing partners for several bHLH-PAS proteins and also some nonrelated partners. They are involved in various biological functions, including regulation of developmental genes. In earlier studies, the developmental expression of Arnt was reported to be almost ubiquitous, whereas Arnt2 expression has been shown to be more limited, comprising neuronal tissues as the main site of expression. Here we provide a detailed description of the expression of Arnt and Arnt2 mRNA in mouse tissues during embryonic and early postnatal development. Arnt and also Arnt2 transcripts, in contrast to earlier reports, are shown to be expressed more widely during development yet show a temporally and spatially specific pattern.
authors.affiliation: Department of Developmental Biology, Tampere University Hospital, Tampere, Finland.
authors.forename: Marjo H
authors.initials: MH
authors.lastname: Aitola
authors.forename: Markku T
authors.initials: MT
authors.lastname: Pelto-Huikko
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D051784:Aryl Hydrocarbon Receptor Nuclear Translocator; D051792:Basic Helix-Loop-Helix Proteins; D004268:DNA-Binding Proteins; D005314:Embryonic and Fetal Development; D005333:Fetus / Q000378:metabolism*; D018507:Gene Expression Regulation, Developmental; D018257:Helix-Loop-Helix Motifs; D017403:In Situ Hybridization; D051379:Mice; D009928:Organ Specificity; D012333:RNA, Messenger / Q000096:biosynthesis; D018336:Receptors, Aryl Hydrocarbon; D014157:Transcription Factors / Q000096:biosynthesis* / Q000235:genetics
chemical_list: D051784:Aryl Hydrocarbon Receptor Nuclear Translocator; D051792:Basic Helix-Loop-Helix Proteins; D004268:DNA-Binding Proteins; D012333:RNA, Messenger; D018336:Receptors, Aryl Hydrocarbon; D014157:Transcription Factors; C497397:Arnt protein, mouse; C099817:Arnt2 protein, mouse