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The muscle development transcriptome landscape of ovariectomized goat.

ABSTRACT: In practical production, almost all rams and about 50% of ewes are used to fatten. Researchers have proved that ewe ovariectomy could improve the productivity significantly, but the specific molecular mechanism is still unknown. In this study, five independent cDNA libraries (three and two from ovariectomized and normal ewe longissimus dorsi samples, respectively) were constructed to thoroughly explore the global transcriptome, further to reveal how the ovariectomized ewes influence muscle development by Illumina2000 sequencing technology. As a result, 205?358 transcripts and 118?264 unigenes were generated. 15?490 simple sequence repeats (SSRs) were revealed and divided into six types, and the short repeat sequence SSR (monomers, dimers, trimers) was the domain type. Single nucleotide polymorphism analysis found that the number of transition was greater than the number of transversion among the five libraries. Furthermore, 1612 differently expressed genes (DEGs) (Log2fold_change?>?1 and p?

SUBMITTER: Zhang S

PROVIDER: S-EPMC5750031 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature

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The muscle development transcriptome landscape of ovariectomized goat.

Zhang Sihuan S Xu Han H Liu Xinfeng X Yang Qing Q Pan Chuanying C Lei Chuzhao C Dang Ruihua R Chen Hong H Lan Xianyong X

Royal Society open science 20171220 12

In practical production, almost all rams and about 50% of ewes are used to fatten. Researchers have proved that ewe ovariectomy could improve the productivity significantly, but the specific molecular mechanism is still unknown. In this study, five independent cDNA libraries (three and two from ovariectomized and normal ewe longissimus dorsi samples, respectively) were constructed to thoroughly explore the global transcriptome, further to reveal how the ovariectomized ewes influence muscle devel ...[more]

PMID: 29308264

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Project description:BACKGROUND:Circular RNA (circRNA) is produced during the splicing of mRNA (in addition to linear splicing) and is part of the gene regulatory network. The temporal expression patterns the different developmental stages were inseparable from these molecules' function. RESULTS:Skeletal muscles of Anhui white goat (AWG) across seven fetal to postnatal development stages were sequenced and 21 RNA sequencing libraries were constructed. We thereby identified 9090 circRNAs and analyzed their molecular properties, temporal expression patterns, and potential functions at the different stages. CircRNAs showed complexities and diversity of formation as the same host gene produces multiple isoforms of these nucleic acids with different expression profiles. The differential expression of 2881 circRNAs (DECs, P < 0.05) was identified and four were randomly selected and validated by qPCR. Moreover, 1118 DECs under strict selected (SDECs, |log2FC| > 2 and P-adj value < 0.01) showed 4 expression trends (Clusters 0, 19, 16 and 18). Cluster 0 molecules had increasing expression at all stages with effects on muscle through metabolism, regulation of enzyme activity, and biosynthesis. Cluster 16 circRNAs had high expression in the early and late stages and are involved in "Wnt signaling pathway", "AMPK signaling pathway" and others. Cluster 18 molecules were mainly expressed at F120 and participate in "cytoskeletal protein binding", "Notch signaling pathway" and so on. Cluster 19 circRNAs were down-regulated at all stages and related to muscle structure and development. Lastly, the SDECs divided the period of skeletal muscle development into three transitional stages: stage 1 (F45 to F90), which related to muscle satellite cell proliferation and muscle fiber structure; stage 2 (F90 to B1), in which the attachment of the cytoplasmic surface to the actin cytoskeleton initiates; and stage 3, which involved the "cGMP-PKG signaling pathway". Moreover, the paraffin sections messages also validated that there are three transitional stages of skeletal muscle development. CONCLUSION:Our current study provides a catalog of goat muscle-related circRNAs that can stratify skeletal muscle development fetus 45 days to newborn 90 days into three developmental stages. These findings better our understanding of functional transitions during mammalian muscle development.

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The muscle development transcriptome landscape of ovariectomized goat.

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The muscle development transcriptome landscape of ovariectomized goat.

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