title: Expression and regulation of miR-1, -133a, -206a, and MRFs by thyroid hormone during larval development in Paralichthys olivaceus.
abstract: MiR-1, miR-133a, and miR-206a have been identified as muscle-specific miRNAs. They play multiple crucial roles in the regulation of muscle development. Here, we show that these miRNAs were differentially expressed during the larval development of flounder, and specifically expressed in skeletal muscle and heart in adult tissues/organs. The expression levels of these miRNAs were significantly changed by thyroid hormone (TH) or thiourea (TU) treatment during metamorphosis from 17 dph (days post hatching) to 42 dph. In addition, the expression levels of MyoD and Myf5 mRNAs markedly increased at 14 dph (pre-metamorphosis) compared to metamorphic stages, and their expression levels are far above the myogenin during larval development. Moreover, these MRFs (myogenic regulatory factors) expression were directly or indirectly regulated by thyroid hormone or thiourea during metamorphosis. All the results suggest that miRNAs and MRFs might be involved in signaling pathway of TH or TU-mediated flounder metamorphosis.
authors.affiliation: Key laboratory of Freshwater Aquatic Genetic Resources, Shanghai Ocean University, Ministry of Agriculture, Shanghai 201306, China.
authors.forename: Yuan-Shuai
authors.initials: YS
authors.lastname: Fu
authors.forename: Zhi-Yi
authors.initials: ZY
authors.lastname: Shi
authors.forename: Gu-Yue
authors.initials: GY
authors.lastname: Wang
authors.forename: Wen-Juan
authors.initials: WJ
authors.lastname: Li
authors.forename: Jun-Ling
authors.initials: JL
authors.lastname: Zhang
authors.forename: Liang
authors.initials: L
authors.lastname: Jia
mesh_terms: D000818:Animals; D005432:Flounder / Q000033:anatomy & histology / Q000235:genetics* / Q000254:growth & development*; D020869:Gene Expression Profiling; D018507:Gene Expression Regulation, Developmental / Q000187:drug effects*; D007814:Larva / Q000187:drug effects / Q000235:genetics; D035683:MicroRNAs / Q000235:genetics* / Q000378:metabolism; D018006:Myogenic Regulatory Factors / Q000235:genetics* / Q000378:metabolism; D018008:Myogenin / Q000235:genetics / Q000378:metabolism; D009928:Organ Specificity / Q000187:drug effects / Q000235:genetics; D013890:Thiourea / Q000494:pharmacology; D013963:Thyroid Hormones / Q000494:pharmacology*
chemical_list: D035683:MicroRNAs; D018006:Myogenic Regulatory Factors; D018008:Myogenin; D013963:Thyroid Hormones; D013890:Thiourea