title: Identification and Expression Profiling of miRNAome in Goat longissimus dorsi Muscle from Prenatal Stages to a Neonatal Stage.
abstract: Skeletal muscle development is a complex biological process regulated by numerous genes and non-coding RNAs, such as microRNAs (miRNAs). In the current study, we made use of the deep sequencing data from Jianzhou Da'er goat longissimus dorsi sampled on days 45, 60, and 105 of gestation, as well as day three after birth to identify miRNAs that regulate goat skeletal myogenesis, and examine their temporal expression profiles. A total of 410 known goat miRNAs, 752 miRNA homologs and 88 novel miRNAs were identified across four stages. Besides three myomiRs, the abundance of 17 miRNAs, including chi-miR-424, chi-miR-542-3p and chi-miR-136-5p was more than 10,000 reads per million mapped reads (RPM), on average. Furthermore, 50 miRNAs with more than 100 RPM clustered at the imprinted DLK1-DIO3 locus on chromosome 21 and showed similar expression patterns, indicating that these miRNAs played important roles in skeletal myogenesis of goats. Based on pairwise comparisons, 221 differentially expressed (DE), known miRNAs were identified across four stages. GO and KEGG analyses of the genes targeted by the DE miRNAs revealed the significantly enriched processes and pathways to be consistent with temporal changes of skeletal muscle development across all sampled stages. However, follow-up experimental studies were required to explore functions of these miRNAs and targets underlying skeletal myogenesis.
authors: College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Postcode 611130, People's Republic of China.
authors: Jiazhong
authors: J
authors: Guo
authors: College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Postcode 611130, People's Republic of China.
authors: Wei
authors: W
authors: Zhao
authors: College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Postcode 611130, People's Republic of China.
authors: Siyuan
authors: S
authors: Zhan
authors: College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Postcode 611130, People's Republic of China.
authors: Li
authors: L
authors: Li
authors: College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Postcode 611130, People's Republic of China.
authors: Tao
authors: T
authors: Zhong
authors: College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Postcode 611130, People's Republic of China.
authors: Linjie
authors: L
authors: Wang
authors: College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Postcode 611130, People's Republic of China.
authors: Yao
authors: Y
authors: Dong
authors: College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Postcode 611130, People's Republic of China.
authors: Hongping
authors: H
authors: Zhang
mesh_terms: D000818:Animals; D002874:Chromosome Mapping; D002875:Chromosomes; D016000:Cluster Analysis; D005260:Female; D020869:Gene Expression Profiling; D018507:Gene Expression Regulation, Developmental; D063990:Gene Ontology; D006041:Goats / Q000235:genetics*; D059014:High-Throughput Nucleotide Sequencing; D006801:Humans; D007231:Infant, Newborn; D035683:MicroRNAs / Q000235:genetics*; D005810:Multigene Family; D018482:Muscle, Skeletal / Q000378:metabolism*; D011247:Pregnancy; D034622:RNA Interference; D012333:RNA, Messenger / Q000235:genetics; D015203:Reproducibility of Results; D059467:Transcriptome
chemical_list: D035683:MicroRNAs; D012333:RNA, Messenger