Comparative analysis among different species reveals that androgen receptor is a core transcriptional factor regulating the chicken follicular selection and ovulation [ChIP-Seq]
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ABSTRACT:
PROVIDER: PRJNA688080 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR13310715_1.fastq.gz | Fastqsanger.gz | |||
| SRR13310715_2.fastq.gz | Fastqsanger.gz | |||
| SRR13310716_1.fastq.gz | Fastqsanger.gz | |||
| SRR13310716_2.fastq.gz | Fastqsanger.gz | |||
| SRR13310717_1.fastq.gz | Fastqsanger.gz |
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Project description:The differences of reproductive processes at molecular levels between the viviparous and oviparous animals are still unclear, and in the oviparous animal, the locations to synthetize sex hormones and also the trends to enrich sex hormones during follicle development are different from that of viviparous animals. To explore the commonalities (key factors for follicular development) and individualities (factors that cause differences among species) in the follicular development of viviparous and oviparous animals, we compared the similarities and differences in follicle development between viviparous and oviparous animals in terms of transcriptome and super-enhancer-based transcriptional regulation, using humans, bovines, and mice as representatives of viviparous animals and chickens, for oviparous animals. It was found that follicle development in molecular terms tended to be more conservative between viviparous and oviparous animals. Estrogen receptors and androgen receptors occupied central positions in the transcriptional regulatory networks of viviparous and oviparous animals respectively, which may be related with differences in the synthesis and secretion of sex hormones between oviparous and viviparous animals. The role of androgen receptors in chicken follicle development was verified through cell level and field experiments. Our study would facilitate to extend existing results of follicle development in viviparous animals to oviparous animals, and our results emphasized the importance of the androgen receptor in chicken follicle development. Comparative analysis among different species in follicle development will help us to gain insight on the mechanisms of follicle development.
2021-02-28 | GSE163890 | GEO
Project description:The differences of reproductive processes at molecular levels between the viviparous and oviparous animals are still unclear, and in the oviparous animal, the locations to synthetize sex hormones and also the trends to enrich sex hormones during follicle development are different from that of viviparous animals. To explore the commonalities (key factors for follicular development) and individualities (factors that cause differences among species) in the follicular development of viviparous and oviparous animals, we compared the similarities and differences in follicle development between viviparous and oviparous animals in terms of transcriptome and super-enhancer-based transcriptional regulation, using humans, bovines, and mice as representatives of viviparous animals and chickens, for oviparous animals. It was found that follicle development in molecular terms tended to be more conservative between viviparous and oviparous animals. Estrogen receptors and androgen receptors occupied central positions in the transcriptional regulatory networks of viviparous and oviparous animals respectively, which may be related with differences in the synthesis and secretion of sex hormones between oviparous and viviparous animals. The role of androgen receptors in chicken follicle development was verified through cell level and field experiments. Our study would facilitate to extend existing results of follicle development in viviparous animals to oviparous animals, and our results emphasized the importance of the androgen receptor in chicken follicle development. Comparative analysis among different species in follicle development will help us to gain insight on the mechanisms of follicle development.
2021-02-28 | GSE163889 | GEO
Project description:The differences in reproductive processes at the molecular level between viviparous and oviparous animals are evident, and the site in the ovary that synthesizes sex hormones (androgens and oestrogens) and the trends for enriching sex hormones during follicle development in chickens are different from those in mammals, suggesting that the effect of sex hormones on follicle development in chickens is probably different from that in viviparous animals. To explore the specific role of androgen receptors (ARs) on chicken follicular development, we matched the correspondence of follicular development stages among chickens, humans, cows and identified chicken-specific genes related to follicle development (GAL-SPGs) by comparing follicle development-related genes and their biological functions among species (chickens, humans, and cows). A comparison of the core transcription factor regulatory network of granulosa cells (or ovaries) based on super enhancers among species (chicken, human, and mouse) revealed that AR is a core transcriptional regulator specific to chickens. In vivo experiments showed that inhibition of AR significantly reduced the number of syf (selected stage follicles) in chickens and decreased the expression of GAL-SPGs in F5 follicles, while in vitro experiments showed that inhibition of AR expression in chicken granulosa cells (GCs) significantly down-regulated the expression levels of GAL-SPGs, indicating that AR could regulate follicle selection through chicken-specific genes related to follicle development. A comparison among species (77 vertebrates) of the conserved genomic regions, where chicken super-enhancers are located, revealed that the chicken AR super-enhancer region is conserved in birds, suggesting that the role of AR in follicle selection may be widespread in birds. In summary, we found that AR can regulate follicle selection through chicken-specific genes related to follicle development, which also emphasizes the important role of AR in follicle selection in chickens and provides a new perspective for understanding the unique process of follicle development in chickens.
2021-08-16 | GSE182083 | GEO
Project description:Comparative analysis among different species reveals that androgen receptor is a core transcriptional factor regulating the chicken follicular selection and ovulation [RNA-Seq]
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Project description:Comparative analysis among different species reveals that androgen receptor is a core transcriptional factor regulating the chicken follicular selection and ovulation [RNA-Seq 2]
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Project description:The composition of follicular fluid reflects crucial paracrine signalling between granulosa- and theca cells and the oocyte. Dynamic changes in the protein composition of human follicular fluid across multiple time points in the period where final meiotic maturation and release of the oocyte take place are previously undescribed. Twenty-five women undergoing IVF- or ICSI treatment in a standard antagonist protocol with agonist ovulation trigger were included in this prospective cohort study. From each patient one follicle was aspirated by transvaginal ultrasound guided puncture at one of five specific time points either before ovulation induction (T=0) or 12-, 17-, 32- or 36 hours after ovulation induction (five patients/time point). Proteomics was carried out by liquid chromatography-mass spectrometry. In total, 400 proteins were identified (FDR<0.05) and 30 were significantly regulated across time points (one-way ANOVA, adjusted p<0.05). Compared to compiled human plasma proteome sets, 47 proteins were unique to follicular fluid. Enriched biological functions among differentially expressed proteins included immune functions, wound healing and functions related to blood coagulation (FDR<0.02). The most profound changes occurred shortly after ovulation induction. We confirmed parallel protein expression to known granulosa cell mRNA changes and described many hitherto unknown protein expression profiles during ovulation. Thus, the study endorsed important biological functions of some proteins and suggested additional proteins, which may be crucial to intrafollicular signalling and oocyte competence that should be further investigated.
2019-07-29 | PXD012561 | Pride
Project description:Vitrification is a method for long-term biological sample cryopreservation without causing intra- and extra-cellular ice formation. We recently established a novel closed vitrification system to cryopreserve mouse ovarian follicles. Using the 3D alginate hydrogel encapsulated in vitro follicle growth (eIVFG) method, we have demonstrated that compared to freshly-harvested follicles, vitrified follicles have normal follicle and oocyte reproductive outcomes. Our recent study further demonstrated the faithful preservation of molecular signatures of follicle-stimulating hormone (FSH)-stimulated follicle maturation in vitrified follicles. However, it is unknown whether ovulation, another crucial gonadotropin-dependent follicular event, and involved ovulatory gene regulatory pathways are well conserved in vitrified follicles. Fresh and vitrified follicles grown for 8 days by eIVFG were collected at 0, 1, 4 and 8-hour post human chorionic gonadotropin (hCG) treatment for the single-follicle RNA sequencing. Principal component analysis (PCA) and Pearson’s correlation analysis revealed that vitrified follicles have similar transcriptomic profiles to fresh follicles. Furthermore, the expression of several genes essential for ovulation were comparable between vitrified and fresh follicles. In summary, these results demonstrate that our closed vitrification system preserves follicular transcriptomic dynamics during ex vivo ovulation. Together with our previous findings that vitrification preserves FSH-stimulated follicle maturation, the integration of vitrification of immature follicles and eIVFG has a great potential to serve as an additional fertilization preservation approach for young cancer patients and endangerers species. Moreover, follicle vitrification enables a high-content ovarian follicle biobank, which can greatly improve the throughput of eIVFG for studying ovulation biology, anovulatory disease, toxicology, and novel contraceptive drug development targeting ovulation.
2023-09-20 | GSE227091 | GEO
Project description:Vitrification preserves follicular transcriptomic dynamics during ex vivo ovulation
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Project description:Polycystic ovary syndrome (PCOS) is a common reproductive endocrine disease which leads to serious impairment of reproductive health in women of child-bearing age. Anovulation or oligo-ovulation is a common clinical manifestation of PCOS patients. The disturbance of ovarian immune microenvironment contributes to the disorders of follicle development and ovulation, and the mechanism remains unclear. Here we demonstrated the protective effect of immune factor interleukin-22 (IL-22) on PCOS follicle development and ovulation. Follicular IL-22 levels were significantly lower in PCOS patients than in the control group and were positively correlated with the oocyte fertilization rate and the high-quality embryo rate. Additionally, IL-22 evidently improved follicle development in vitro and promoted ovulation-related gene expression, which was disrupted by the depletion of interleukin-22 receptor 1 (IL-22R1) or inhibition of STAT3 in granulosa cells, indicating that IL-22 acted through IL-22R1 and STAT3 signalling pathway to promote follicle development and ovulation in PCOS. In summary, this study elucidated the vital role of ovarian immune microenvironment in follicle development and ovulation, the application of IL-22 may provide new insights into the treatment of PCOS patients.
2024-10-09 | GSE266340 | GEO
Project description:The mammalian follicular development is a well-orchestrated and complex molecular process characterized by sequences of follicular waves that yield the ovulatory follicle. It has been reported that bi-directional communication between the growing oocyte and the surrounding somatic cells is a hallmark of mammalian follicular development, partially mediated by extracellular vesicles (EVs) present in the follicular fluid (FF). Bioactive molecules such as the miRNAs encapsulated in the EVs mediate this communication within the follicular environment. Here, we aimed to decipher the dynamics of the miRNAs in the EVs of equine FF aspirated in vivo during different stages of follicular development. Hence, all follicles ≥6 mm were ablated on Days 10–11 of the estrous cycle (ovulation = Day 0) and the new induced wave was ultrasound-monitored daily until the largest growing follicle for at least three consecutive days was randomly allocated to one of the five groups (n = 8 follicles/group) namely: predeviation (preDEV; 18–20 mm), deviation (DEV; 22–25 mm), postdeviation (postDEV; 26–29 mm), preovulatory (preOV; 30–35 mm), and impending ovulation (IMP; ~40 mm). The FF was collected from each target group by ultrasound-guided transvaginal follicle aspiration. After removal of cells, cellular debris, and larger particles, EVs were isolated from FF groups (4 biological replicates/group; 0.5 mL FF/replicate) using high-speed ultracentrifugation (120,000xg for 70 min). Isolated EVs were characterized using western blot for EV marker proteins, NanoSight Tracking Analysis, and electron microscopy. MiRNA enriched total RNA was isolated from EVs using an Exosomal RNA Isolation kit and small-RNA library preparation and RNAseq (NextSeq500; Illumina) was performed by Novogene Co, Ltd. Approximately 180 known miRNAs were detected in each group with 148 mutually found in all groups. Among the expressed miRNAs, miR-148a, miR-21, miR-192, and miR-99a were the top highly abundant miRNAs in all groups. Cluster analysis exhibited 15 different expression patterns during follicular development. Among these patterns, a group of 23 miRNAs (including miR-106b, miR-199a-5p, and miR-125a-5p) exhibited a stable expression at the preDev until the postDev stage, a significant increase at the preOV stage, and then a significant decrease at the IMP stage. This miRNA cluster has been found to target genes involved in TGF-signaling and endocytosis pathways. Another interesting pattern with 22 miRNAs (including miR-146b-5p, miR-140, and miR-143) exhibited a sharp reduction in their expression from the preDEV until the preOV stage and was predicted to target genes associated with fatty acid biosynthesis, cell cycle, and oocyte meiosis pathways. In contrast, a group of 16 miRNAs (including miR-483, miR-128, and miR-192) gradually increased in expression from preDEV to the postDEV and then downregulated at the preOV stage. This miRNA cluster targets several signaling pathways, including ErbB, thyroid, and estrogen signaling. In conclusion, this study provides greater insights into the stage-specific expression dynamics of the FF EV-miRNAs during equine follicular development, which may play a role in folliculogenesis in mares.
2023-02-23 | GSE211179 | GEO