PMID- 9545558 OWN - NLM STAT- MEDLINE DCOM- 19980709 LR - 20190909 IS - 0925-4773 (Print) IS - 0925-4773 (Linking) VI - 73 IP - 1 DP - 1998 Apr TI - Expression of ARNT, ARNT2, HIF1 alpha, HIF2 alpha and Ah receptor mRNAs in the developing mouse. PG - 117-23 AB - The basic helix-loop-helix-PAS (bHLH-PAS) protein ARNT is a dimeric partner of the Ah receptor (AHR) and hypoxia inducible factor 1 alpha(HIF1 alpha). These dimers mediate biological responses to xenobiotic exposure and low oxygen tension. The recent cloning of ARNT and HIF1(homologues (ARNT2 and HIF2 alpha) indicates that at least six distinct bHLH-PAS heterodimeric combinations can occur in response to a number of environmental stimuli. In an effort to understand the biological relevance of this combinatorial complexity, we characterized their relative expression at a number of developmental time points by parallel in situ hybridization of adjacent tissue sections. Our results reveal that in general there is limited redundancy in the expression of these six transcription factors and that each of these bHLH-PAS members displays a unique pattern of developmental expression emerging as early as embryonic day 9.5. CI - Copyright 1998 Elsevier Science Ireland Ltd. FAU - Jain, S AU - Jain S AD - Department of Molecular Pharmacology and Biological Chemistry, Northwestern University Medical School, IL, USA. FAU - Maltepe, E AU - Maltepe E FAU - Lu, M M AU - Lu MM FAU - Simon, C AU - Simon C FAU - Bradfield, C A AU - Bradfield CA LA - eng GR - ES06883/ES/NIEHS NIH HHS/United States GR - P30-CA07175/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - Ireland TA - Mech Dev JT - Mechanisms of development JID - 9101218 RN - 0 (Arnt protein, mouse) RN - 0 (Arnt2 protein, mouse) RN - 0 (Basic Helix-Loop-Helix Transcription Factors) RN - 0 (DNA-Binding Proteins) RN - 0 (Hif1a protein, mouse) RN - 0 (Hypoxia-Inducible Factor 1) RN - 0 (Hypoxia-Inducible Factor 1, alpha Subunit) RN - 0 (Nuclear Proteins) RN - 0 (RNA, Messenger) RN - 0 (Receptors, Aryl Hydrocarbon) RN - 0 (Transcription Factors) RN - 138391-32-9 (Aryl Hydrocarbon Receptor Nuclear Translocator) SB - IM MH - Animals MH - Animals, Newborn MH - Aryl Hydrocarbon Receptor Nuclear Translocator MH - Basic Helix-Loop-Helix Transcription Factors MH - DNA-Binding Proteins/biosynthesis/*genetics MH - Embryo, Mammalian/*metabolism MH - Genes, Overlapping MH - Hypoxia-Inducible Factor 1 MH - Hypoxia-Inducible Factor 1, alpha Subunit MH - In Situ Hybridization MH - Mice MH - Mice, Inbred C57BL MH - Nuclear Proteins/biosynthesis/*genetics MH - RNA, Messenger/*biosynthesis MH - Receptors, Aryl Hydrocarbon/biosynthesis/*genetics MH - Transcription Factors/biosynthesis/*genetics EDAT- 1998/05/28 00:00 MHDA- 1998/05/28 00:01 CRDT- 1998/05/28 00:00 PHST- 1998/05/28 00:00 [pubmed] PHST- 1998/05/28 00:01 [medline] PHST- 1998/05/28 00:00 [entrez] AID - S0925-4773(98)00038-0 [pii] AID - 10.1016/s0925-4773(98)00038-0 [doi] PST - ppublish SO - Mech Dev. 1998 Apr;73(1):117-23. doi: 10.1016/s0925-4773(98)00038-0.