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LncRNA sequencing of Laoshan dairy goat mammary gland at early, peak and late lactation stages.

ABSTRACT: LncRNA sequencing of Laoshan dairy goat mammary gland at early, peak and late lactation stages.

PROVIDER: PRJNA560658 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR9992787_1.fastq.gz	Fastqsanger.gz
	SRR9992787_2.fastq.gz	Fastqsanger.gz
	SRR9992788_1.fastq.gz	Fastqsanger.gz
	SRR9992788_2.fastq.gz	Fastqsanger.gz
	SRR9992789_1.fastq.gz	Fastqsanger.gz

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LncRNA sequencing of Laoshan dairy goat mammary gland at early, peak and late lactation stages.

Project description:Five healthy Laoshan dairy goats (four years old, third lactation) from Qingdao Laoshan dairy goat primary farm (Shandong Province, China) were used. The mammary gland samples were collected surgically after general anaesthesia using Xylazine Hydrochloride injection solution (Huamu Animal Health Products Co., Ltd. China) at corresponding lactation stage, including early, peak and late lactations.

2020-02-22 | GSE135930 | GEO

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Project description:In comparison with cow milk, goat (Capra hircus) milk contains much higher levels of unsaturated fatty acids, as well as higher levels of total fat, proteins, carbohydrates, calcium, and vitamins.The main objective of the present study was to better define the relationship of known miRNAs regulating milk fat metabolism. Our main purpose is to search for some known miRNAs regulating milk fat metabolism, to this end, we screened potential miRNAs with differential expression between peak-lactation and non-lactation.

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Discovery and Comparative Transcriptome Profiling of Dairy Goat MicroRNAs from Dry Period and Peak Lactation Mammary Gland Tissues

Project description:In this study, two small RNA libraries were constructed using dry period and peak lactation dairy goat mammary gland tissues and sequenced by the Illumina Solexa high-throughput sequencing system. A total of 346 conserved and 95 novel miRNAs were identified in the dairy goat. The expression of miRNAs was confirmed by qRT-PCR in nine tissues and the mammary gland during development cycles. In addition, several candidate miRNAs that may be involved in mammary gland development and lactation were found by the comparison of miRNA expression profiles among different tissue and developmental stages of the mammary gland. This study provides the identification and profile of miRNAs related to the biology of the mammary gland in the dairy goat. The identification of these miRNAs could contribute to understanding the molecular mechanisms of lactation physiology and the development of the mammary gland in the dairy goat.

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Differential expression analysis of miRNAs in goat (Capra hircus) mammary gland between peak and late lactation by Solexa sequencing

Project description:We report the application of Solexa high-throuthput sequencing technology for miRNA differential expression profiles. Using an optimized data analysis workflow, we mapped about 30 million sequence reads per sample to Ovis aries genome. The results were validated by qRT-PCR. Our study represents the first detailed analysis of miRNA expression profiles in goat mammary gland tissues, with biologic replicates generated by RNA-seq technology. miRNA expression profiles of goat mammary gland tissues between peak lactation and late lactation were generated by Illumina/Solexa sequencing

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Real-time quantitative PCR analysis of goat mammary glands in peak-lactation and late-lactation periods

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Capra hircus breed:Laoshan dairy goat

Project description:Capra hircus breed:Laoshan dairy goat Raw sequence reads

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Identification and functional analysis of m6A in the mammary gland tissues of dairy goats at the early and peak lactation stages

Project description:In this study, m6A-modified Methylated RNA immunoprecipitation sequencing (MeRIP-seq) and transcriptome sequencing (RNA-seq) were used to identify the key genes with m6A modification during mammary gland development and lactation in dairy goats. The results showed that m6A methylation occurred at 3,927 loci, which were significantly enriched in the 3' untranslated coding region(3’UTR) and the termination codon region. In the early stage (E) and peak stage (P) of lactation, m6A methylation occurred extensively in mammary tissues, and a total of 725 differentially expressed m6A-modified genes were obtained, all negatively correlated with mRNA expression. In addition, gene ontology (GO) enrichment and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis showed that different methylated genes were mainly involved in the growth and apoptosis of mammary epithelial cells through signaling pathways related to mammary gland development and lactation, such as the mitogen-activated protein kinase (MAPK) and phospholipase D pathways.

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Project description:Next-generation sequencing (NGS) has revolutionized systems-based analysis of miRNA expression files. The goals of this study are to obtain the miRNA expression files in dairy goat mammary gland at early lactation (10th day after parturition) and early involution (5th day after forced weaning at late lactation, 218 day after parturition).

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Comparative transcriptome profiling of dairy goat microRNAs from dry period and peak lactation mammary gland tissues.

Project description:BackgroundMicroRNAs (miRNAs) are small noncoding RNA molecules that serve as important post-transcriptional gene expression regulators by targeting messenger RNAs for post-transcriptional endonucleolytic cleavage or translational inhibition. miRNAs play important roles in many biological processes. Extensive high-throughput sequencing studies of miRNAs have been performed in several animal models. However, little is known about the diversity of these regulatory RNAs in goat (Capra hircus), which is one of the most important agricultural animals and the oldest domesticated species raised worldwide. Goats have long been used for their milk, meat, hair (including cashmere), and skins throughout much of the world.ResultsIn this study, two small RNA libraries were constructed based on dry period and peak lactation dairy goat mammary gland tissues and sequenced using the Illumina-Solexa high-throughput sequencing technology. A total of 346 conserved and 95 novel miRNAs were identified in the dairy goat. miRNAs expression was confirmed by qRT-PCR in nine tissues and in the mammary gland during different stages of lactation. In addition, several candidate miRNAs that may be involved in mammary gland development and lactation were found by comparing the miRNA expression profiles in different tissues and developmental stages of the mammary gland.ConclusionsThis study reveals the first miRNAs profile related to the biology of the mammary gland in the dairy goat. The characterization of these miRNAs could contribute to a better understanding of the molecular mechanisms of lactation physiology and mammary gland development in the dairy goat.

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