title: Mouse microRNA-23b regulates expression of Hes1 gene in P19 cells.
abstract: MicroRNAs (miRNAs) are abundant class of approximately 21-25 nts small endogenous RNAs. Recently several hundred miRNAs have been identified from diverse species; nematodes, insects, plants, and animals. These small RNAs can regulate gene expression at a post-transcriptional level by interacting with their target mRNAs. Interaction of these RNAs causes either repression of translation or RNAi-dependent cleavage of target RNAs. It has been recently found that they have critical regulatory roles in embryogenesis, development, differentiation, cellular proliferation, apoptosis, and so on. However, identifications of the target of the target of miRNAs have been almost unknown, especially in vertebrates. Here we show that Hairy/enhancer of split protein (Hes1), a bHLH transcriptional repressor functioning in neuronal differentiation, is a target of mouse miRNA-23b (miR-23b).
authors.affiliation: Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
authors.forename: Hitomi
authors.initials: H
authors.lastname: Kimura
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Kawasaki
authors.forename: Kazunari
authors.initials: K
authors.lastname: Taira
mesh_terms: D000818:Animals; D001483:Base Sequence; D051792:Basic Helix-Loop-Helix Proteins / Q000235:genetics* / Q000378:metabolism; D005786:Gene Expression Regulation; D018398:Homeodomain Proteins / Q000235:genetics* / Q000378:metabolism; D051379:Mice; D035683:MicroRNAs / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D008954:Models, Biological; D008969:Molecular Sequence Data; D009690:Nucleic Acid Conformation; D012333:RNA, Messenger / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D000072056:Transcription Factor HES-1
chemical_list: D051792:Basic Helix-Loop-Helix Proteins; D018398:Homeodomain Proteins; D035683:MicroRNAs; D012333:RNA, Messenger; D000072056:Transcription Factor HES-1; C489734:Hes1 protein, mouse