Expression profiles of circRNAs in goat skeletal muscle development
Ontology highlight
ABSTRACT:
ORGANISM(S): Capra hircus
PROVIDER: GSE200971 | GEO | 2023/12/31
REPOSITORIES: GEO
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Project description:MicroRNAs (miRNAs) are small (∼22 nucleotides) noncoding ribonucleic acids (RNAs) that regulate gene expression by binding to their complementary sequences. Recent years, a great deal of miRNAs which highly-enriched in skeletal muscle have been identified, which can influence multiple facets of muscle development and function through their regulation of key genes controlling myogenesis. However, to date no miRNAs have been reported to modulate muscle development in goat. Total RNAs from the xuhuai goats longissimus thoracis at fetal and six month old stages were used to construct small RNA libraries for Solexa SBS technology sequencing. In the small RNA profile, a total of 15,627,457 clean reads were obtained from the fetal goat library and 15,593,721 clean reads from the six month old goat library. There are 471 conserved miRNAs overlapped in both libraries, of which 343 miRNAs were differential expressed. We identified 122 novel miRNAs in the fetal caprine library and 53 novel miRNAs in the six month old-caprine library.
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Project description:In the present study, RNA-seq technique was used to compare the expression profiles of circRNAs from goat endometrium samples at gestational day 5 (pre-receptive endometrium, PE) and day 15 (receptive endometrium, RE). A total of 21,813 circRNAs were identified in goat endometrium, of which only 31.22% (6,810) circRNAs were co-expressed at both stages, and 5,925 circRNAs were identified specifically in RE and 9,078 in PE, suggesting high stage specificity in the circRNAs in dairy goats. Further analysis found that there were 334 DECs (differentially expressed circRNAs) in RE compared to PE (P< 0.05), and circRNA8077 was up-regulated with the highest FPKM value in RE. It was noteworthy that half of the up-regulated circRNAs with top 10 highest FPKM value in RE were come from CRIM1. Moreover, GO and KEGG analysis of the hgDEGs (hosting genes of DECs) revealed some circRNAs, genes and pathways that may involve in the formation of the receptive endometrium in dairy goats. In a word, our data provided an endometrium circRNA expression atlas related to the biology of the goat receptive endometrium during embryo implantation, and the results suggested that a subset of circRNAs might involve in the processes of the formation and development of endometrial receptivity.
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Project description:To explore the overall circRNAs involved in growth and development of Arabidopsis thaliana across the lifespan, we deeply sequenced samples of whole plants from different developmental stages (cotyledons emergence, rosette leavesï¹¥1 mm, rosette growth complete, first flower open, flourishing florescence, first silique shattered, senescence). The total RNA was purified by rRNA-depletion and linear RNA removal with RNAseR, and sequenced by the Illumina HiSeq2500 platform. We obtained 31 Gb raw data and identified 1217 circRNAs with expression quantity. We annotated these circRNAs and predicted their targeted microRNA. The circRNAs involved in growth and development of Arabidopsis thaliana across lifespan were identified and analyzed using the Illumina HiSeq2500 platform.
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Project description:The goal of this study was to compare the transcriptome profiles (RNA-seq) of fetal and six month old goat in skeletal muscle. Total RNAs from the Chinese Xuhuai goat longissimus thoracis at fetal and six month old stages were used to construct cDNA libraries for Solexa SBS technology sequencing. After remove reads with adapters, reads in which unknown bases were more than 5% and low quality reads, we obtained 27,512,850 clean reads from the fetal caprine (FC) library and 27,582,908 clean reads from the six month old caprine (SMC) library. The total basepairs were 2,476,156,500 for FC and 2,482,461,720 for SMC. The ratio of clean reads mapped to reference genome was 45.43% for FC and 33.73% for SMC. The ratio of reads mapped to reference gene was 47.77% for FC and 34.03% for SMC. To reveal the molecular events during different development stages, genes that differentially expressed between the two libraries were identified. Clean reads that matched reference genes in each library were used to evaluate the expression level of transcripts. In total, 11663 genes were differentially expressed between the two development stages. There were 5134 genes with at least a two-fold difference in expression between FC and SMC libraries (FDR, 0.001), of which 1070 genes were up-regulated, 4064 were down-regulated in the six month old caprine compared to the fetal caprine muscle tissue, and 4911 were expressed in both library. Genes with less than one fold changes between FC and SMC libraries were excluded from further analysis. The results indicated that there were significant difference between the two development phase in gene-expression. In addition, some muscle related genes such as MyoD, Myf5, Myogenin, Mrf4, myosin heavy chain 3 (MYH3), Myoglobin and DLK1 were differentially expressed.
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