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Bos taurus

ABSTRACT: The expression pattern of microRNAs in granulosa cells of subordinate and dominant follicles during the early luteal phase of bovine estrous cycle

PROVIDER: PRJNA241945 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR1198080.fastq.gz	Fastqsanger.gz
	SRR1198090.fastq.gz	Fastqsanger.gz
	SRR1198081.fastq.gz	Fastqsanger.gz
	SRR1198091.fastq.gz	Fastqsanger.gz
	SRR1198082.fastq.gz	Fastqsanger.gz

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The expression pattern of microRNAs in granulosa cells of subordinate and dominant follicles during the early luteal phase of bovine estrous cycle

Project description:This study was conducted to investigate the miRNA enrichment and degradation in the granulosa cells of dominant and subordinate follicle during the early luteal phase of the bovine estrous cycle using high throughput miRNA sequencing technology.

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Differential expression of miRNAs in granulosa cells of bovine preovulatory dominant and subordinate follicles

Project description:The study aimed to uncover differential expression pattern of regulatory microRNAs in bovine granulosa cells derived from preovulatory dominant and subordinate follicles.

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Project description:Bovine granulosa cells harvested from cohort follicles at 1.3 days after wave emergence, and from dominant and subordinate follicles at 2.6 days after wave emergence. Total RNA extracted from granulosa cells of 4 cohort, 4 dominant and 4 subordinate follicles was pooled for generation of each respective SAGE library. Keywords: other

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Granulosa cell gene expression profiling of bovine cohort, dominant and subordinate follicles

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Expression of microRNAs and their target genes and pathways associated with ovarian follicle development in cattle

Project description:Development of ovarian follicles is controlled at the molecular level by several gene products whose precise expression leads to regression or ovulation of follicles. MicroRNAs (miRNAs) are small non-coding RNAs that regulate gene expression through sequence-specific base pairing with target messenger RNAs (mRNAs) causing translation repression or mRNA degradation. The aim of this study was to identify miRNAs expressed in ovarian follicles, localize their expression within the theca and/or granulosa layers and their putative target genes/pathways that are involved in bovine ovarian follicle development. By using miRCURY microarray (Exiqon) we identified 14 and 49 differentially expressed miRNAs (P < 0.01) between dominant and subordinate follicles in theca and granulosa cells, respectively. The expression levels of four selected miRNAs were confirmed by qRT-PCR. To identify target prediction and pathways of differentially expressed miRNAs Union of Genes option in DIANA miRPath v.2.0 software was used. The predicted targets for these miRNAs were enriched for pathways involving oocyte meiosis, Wnt, TGF-beta, ErbB, Insulin, P13K-Akt and MAPK signaling pathways. This study identified differentially expressed miRNAs in the theca and granulosa cells of dominant and subordinate follicles, and clearly implicates them in having important roles in regulating known molecular pathways that determine the fate of ovarian follicle development.

2014-11-04 | GSE55890 | GEO

Bos taurus

Project description:Granulosa cell gene expression profiling of bovine cohort, dominant and subordinate follicles

| PRJNA92011 | ENA

Expression profiling of microRNAs in Bovine ovarian follicular development

Project description:The study aimed to identify miRNAs expression profiles associated with growth and regression of dominant-size follicles in bovine. Follicles and corpora lutea (CL, from days 1 to 4 of the estrous cycle) were collected from abattoir ovaries and their status (healthy/atretic) was assessed by measuring steroid levels and aromatase expression. Total RNA was isolated from whole follicles at different developmental stages and from CL. An heterologous microarray (Exiqon, Denmark) approach followed by RT-qPCR validation (Qiagen, UK) was used to identify and compare miRNA profiles between large healthy follicles (diameter, 13–16 mm, n=6) and each of small (4–8 mm, n=6 pools of follicles), large atretic folllicles (13-16 mm, n=6) and CL (n=6) . RNA from the above groups was hybridized to the miRCURY LNA™ microRNA Hi-Power Labeling Kit,Hy3™/Hy5™ (Exiqon) and hybridized on the miRCURY LNA™ microRNA Array (6th gen). A total of 17 and 57 microRNAs were differentially expressed (> 2 fold, adj. P-value < 0.05) between Large Healthy and each of Small and Large Atretic follicles, respectively, a fraction of which corresponded to registered bovine miRNA sequences. A subset of 5 bovine miRNAs (miR-144, miR-202,vmiR-451, miR-652, miR-873) were confirmed by qPCR to be upregulated in Large Healthy follicles, were enriched in mural granulosa cells and their predicted targets mapped to genes involved in follicular cell proliferation and differentiation, suggesting an involvemet of this subset of microRNAs in ovarian follicle development. Moreover, a total of 11 and 22 unique miRNAs were up- and down-regulated, respectively (≥ 2.5 fold; adjusted P-value < 0.01), in corpora lutea relative Large Healthy follicles, including an upregulated cluster, miR-183-96-182, which was shown to be involved in luteal cell proliferation and steroidogenesis

2014-06-15 | GSE54692 | GEO

Bos taurus

Project description:Differential expression of miRNAs in granulosa cells of bovine preovulatory dominant and subordinate follicles

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Expression profiling of microRNAs in Bovine ovarian follicular development; comparative analyses between LHF and CL groups

Project description:The study aimed to identify miRNAs expression profiles associated with growth and regression of dominant-size follicles in bovine. Follicles were collected from abattoir ovaries and their status (healthy/atretic) was assessed by measuring steroid levels and aromatase expression. Corpora lutea (CL) were collected from ovarian pairs correponding to days 1 to 4 of the oestrus cycle. Total RNA was isolated from whole follicles at different developmental stages and from CL. An heterologous microarray (Exiqon, Denmark) approach followed by RT-qPCR validation (Qiagen, UK) was used to identify and compare miRNA profiles between large healthy follicles (diameter, 13–16 mm, n=6) and each of small (4–8 mm, n=6 pools of follicles), large atretic folllicles (13-16 mm, n=6) and CL (n=6). RNA from the above groups was hybridized to the miRCURY LNA™ microRNA Hi-Power Labeling Kit,Hy3™/Hy5™ (Exiqon) and hybridized on the miRCURY LNA™ microRNA Array (6th gen). A total of 17 and 57 microRNAs were differentially expressed (> 2 fold, adj. P-value < 0.05) between Large Healthy and each of Small and Large Atretic follicles, respectively, a fraction of which corresponded to registered bovine miRNA sequences. A subset of 5 bovine miRNAs (miR-144, miR-202,vmiR-451, miR-652, miR-873) were confirmed by qPCR to be upregulated in Large Healthy follicles, were enriched in mural granulosa cells and their predicted targets mapped to genes involved in follicular cell proliferation and differentiation, suggesting an involvemet of this subset of microRNAs in ovarian follicle development. In addition, the miR-183-96-183 cluster was identified as upregulated in CL and was shown to be involved in luteal survival and progesterone production.

2017-04-14 | GSE87347 | GEO

Stötzel2012 - Bovine estrous cycle, synchronization with prostaglandin F2α

Project description:C. Stötzel, J. Plöntzke, W. Heuwieser & S. Röblitz. Advances in modeling of the bovine estrous cycle: synchronization with PGF2α. Theriogenology 78, 7 (2012). Our model of the bovine estrous cycle is a set of ordinary differential equations which generates hormone profiles of successive estrous cycles with several follicular waves per cycle. It describes the growth and decay of the follicles and the corpus luteum, as well as the change of the key reproductive hormones, enzymes and processes over time. In this work we describe recent developments of this model towards the administration of prostaglandin F2α. We validate our model by showing that the simulations agree with observations from synchronization studies and with measured progesterone data after single dose administrations of synthetic prostaglandin F2α.

2024-09-02 | BIOMD0000000481 | BioModels

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