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Transcriptome analysis reveals differentially expressed genes associated with high rates of egg production in chicken hypothalamic-pituitary-ovarian axis

ABSTRACT: Transcriptome analysis reveals differentially expressed genes associated with high rates of egg production in chicken hypothalamic-pituitary-ovarian axis

PROVIDER: PRJNA594020 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR10603400_1.fastq.gz	Fastqsanger.gz
	SRR10603400_2.fastq.gz	Fastqsanger.gz
	SRR10603385_1.fastq.gz	Fastqsanger.gz
	SRR10603385_2.fastq.gz	Fastqsanger.gz
	SRR10603386_1.fastq.gz	Fastqsanger.gz

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Transcriptome analysis reveals differentially expressed genes associated with high rates of egg production in chicken hypothalamic-pituitary-ovarian axis

Project description:Purpose: To identify the key regulatory genes and pathways involved in chicken high egg productivon in HPG axis. Methods: A total of 856 Chinese Luhua chicken was raised in poultry breeding farm of Sichuan Agricultural University, the highest two hundred and the lowest two hundred chicken egg production were considered as high egg production (HEP) and low egg production (LEP) according to the total egg number at 300 days of age, respectively, integrated with RNA-seq sequencing of samples of HPG axis (hypothalamus, pituitary gland and ovary) from three HEP and three LEP chickens at 300 days of age. Results: A total 86.7 Gb RNA-seq sequences were generated, and with each library averaged 5.1 Gb. Conclusions: These important data might improve our understanding of reproductive biology of Luhua chicken by providing comprehensive gene expression information at transcriptional level. We indicate that our approach will contribute to the isolation of effective molecular markers that can be used in genetic breeding programs in Chinese domestic Luhua chicken.

2019-12-07 | GSE141588 | GEO

Transcriptome analysis reveals differentially expressed genes associated with high rates of egg production in chicken hypothalamic-pituitary-ovarian axis.

Project description:The hypothalamic-pituitary-ovarian (HPO) axis regulates the breeding process cycle of laying hens. However, the key regulatory genes of the HPO axis and pathways that drive chicken egg laying performance remain elusive. A total of 856 Chinese Luhua chicken was raised and the highest two hundred and the lowest two hundred chicken egg production were considered as high egg production (HEP) and low egg production (LEP) according to the total egg number at 300 days of age, respectively. RNA-seq sequencing (RNA-Seq) was conducted to explore the chicken transcriptome from the hypothalamus, pituitary gland and ovary tissue of 6 Chinese Luhua chicken with 3 high and low-rate egg production. In total, 76.09 Gb RNA-seq sequences were generated from 15 libraries with an average of 5.07 Gb for each library. Further analysis showed that 414, 356 and 10 differentially expressed genes (DEGs) were identified in pituitary gland, ovary and hypothalamus between HEP and LEP chickens, respectively. In pituitary gland, DEGs were involve in regulation of cellular glucose homeostasis, Ras protein signal transduction, negative regulation of hormone secretion. In Ovary DEGs were mainly involved in embryonic organ development, regulation of canonical Wnt signaling, response to peptide hormone. Our study identified DEGs that regulate mTOR signaling pathway, Jak-STAT signaling pathway, Tryptophan metabolism and PI3K-Akt signaling pathways at HPO-axis in laying hens. These important data contribute to improve our understanding of reproductive biology of chicken and isolating effective molecular markers that can be used for genetic selection in Chinese domestic Luhua chicken.

| S-EPMC7136225 | biostudies-literature

Association of egg mass and egg sex in chicken

Project description:Association of egg mass and egg sex: gene expression analysis from maternal RNA in the germinal disc region of layer hens (Gallus gallus)

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The effects of phoenixin-14 on the hypothalamic-pituitary-gonadal (HPG) axis and spawning in green-spotted puffer (Dichotomyctere nigroviridis)

Project description:The effects of phoenixin-14 on the hypothalamic-pituitary-gonadal (HPG) axis and spawning in green-spotted puffer (Dichotomyctere nigroviridis)

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Transcriptome Analysis of Hypothalamic-Pituitary-Ovarian Axis Reveals circRNAs Related to Egg Production of Bian Chicken.

Project description:The hypothalamic-pituitary-ovarian (HPO) axis plays a pivotal role in the regulation of egg production in chickens. In addition to the traditional understanding of the HPO axis, emerging research highlights the significant role of circRNAs in modulating the functions of this axis. In the study, we collected hypothalamus, pituitary, and ovarian tissues from low-yielding and high-yielding Bian chickens for transcriptome sequencing. We identified 339, 339, and 287 differentially expressed (DE) circRNAs with p_value < 0.05 and |log2 (fold change)| ≥ 1 in hypothalamus, pituitary, and ovarian tissues. The Gene Ontology (GO) enrichment analysis for the source genes of DE circRNAs has yielded multiple biological process (BP) entries related to cell development, the nervous system, and proteins, including cellular component morphogenesis, cell morphogenesis, nervous system development, neurogenesis, protein modification process, and protein metabolic process. In the top 30 Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways, we observed the enrichment of the GnRH signaling pathway in both the hypothalamus and the pituitary, solely identified the GnRH secretion pathway in the pituitary, and discovered the pathway of oocyte meiosis in the ovary. Furthermore, given that circRNA primarily functions through the ceRNA mechanism, we constructed ceRNA regulatory networks with DE circRNAs originating from the GnRH signaling pathway, GnRH secretion, ovarian steroidogenesis, steroid hormone biosynthesis, and the estrogen signaling pathway. Finally, several important ceRNA regulatory networks related to reproduction were discovered, such as novel_circ_003662-gga-let-7b/miR-148a-3p/miR-146a-5p/miR-146b-5p and novel_circ_003538-gga-miR-7464-3p-SLC19A1. This study will contribute to advancements in understanding the involvement of circRNAs in the HPO axis, potentially leading to innovations in improving egg production and poultry health.

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Exploring differentially expressed genes in the hypothalamic-pituitary-gonadal axis of estrous and anestrous primiparous sows using RNA-Seq technique

Project description:To investigate the effects of HPG axis on reproductive function and the underlying mechanisms involved, six libraries, including hypothalamic, pituitary and ovarian samples (termed A, B and C) from the sows in normal estrus and the corresponding samples (termed A1, B1 and C1) from the sows in which anestrus was caused by inactive ovaries, were constructed and sequenced to analyze the differentially expressed genes (DEGs) between different HPG axises. A total of 710 (392 up and 318 down), 707 (283 up and 424 down), and 956 (635 up and 321 down) DEGs were identiﬁed in A vs. A1, B vs. B1 and C vs. C1, respectively. Gene ontology (GO) and KEGG pathway analyses showed that the DEGs were most enrichment in neuropeptide hormone activity, ovarian steroidogenesis, FoxO signaling pathway and GnRH signaling pathway etc.

2020-08-15 | GSE102743 | GEO

Effect of maternal exposure to dioxin on the pituitary and hypothalamic expression of genes in PND70 male pups

Project description:Our previous studies have revealed that treatment of pregnant rats with 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD, 1 M-NM-<g/kg) at gestational day (GD) 15 reduces the pituitary synthesis of luteinizing hormone (LH) during late fetal and early postnatal period, leading to imprinting of defects in sexual behaviors at adulthood. However, it remains obscure how the attenuation of pituitary LH links to sexual immaturity. To address this issue, we firstly performed a DNA microarray analysis to identify the gene(s) responsible for dioxin-induced sexual immaturity, using the pituitary and hypothalamus of male pups, at the age of postnatal day (PND)70, born from TCDD-treated dams. Among the reduced genes, we focused on gonadotropin-releasing hormone (GnRH) in the hypothalamus, because of its role in sexual behaviors suggested so far. The present study strongly suggests that maternal exposure to TCDD fixes the status of the lowered expression of GnRH in the offspring by reducing steroidogenesis at perinatal stage, and this is the mechanism for the imprinting of defects in sexual behaviors at adulthood. Total RNA was isolated from the pituitary and hypothalamus of PND70 male pups born from the dams treated with TCDD (1 M-NM-<g/kg) or vehicle at GD15, using an RNeasy Mini Kit (QIAGEN). To identify the gene(s) the altered expression of which is fixed and linked to defects in sexual behaviors, the profile of gene expression was analyzed using the Illumina RatRef-12 Expression BeadChip. This series includes two dataset; hypothalamic and pituitary samples (each case; N=3x2). The normalization applied each dataset.

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Project description:The pituitary gland is a neuroendocrine organ that is involved in several processes within the body such as metabolism, growth, immune function, and reproduction. Increased ambient temperatures are environmental stressor that leads to several welfare concerns in poultry production but also economic losses. Because of the involvement of the pituitary gland in several processes that are affected by heat stress, it is hypothesized this tissue's gene expression will be impacted by heat stress. The objectives of the project are to (a) identify genes that constitue the pituitary gland when compared to other collected chicken tissues (Insert tissues) and (b) identify genes that respond to heat stress via differential expression analysis to better understand the chicken's response to heat at the transcriptomic level.

2017-02-10 | GSE89297 | GEO

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Project description:Hypothalamic -pituitary axis changes related to growth rate in Kołudzka White geese

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