Zinc increases hormone receptor expression in human ovarian granulosa cells and gene profiling
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE201223 | GEO | 2022/04/25
REPOSITORIES: GEO
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Project description:Human granulosa cells are follicular cells surrounding the oocyte. Human granulosa cells are retrieved during in vitro fertilization a process where patients undergo hormonal stimulation including FSH and LH/hCG stimulation. Under the influence of the luteinizing hormone (LH) a process called luteinization they differentiate to luteal cells and contribute to the corpus luteum. Therefore, this cellular system is a good model for human corpus luteum (CL). To study processes within the human CL, IVF-derived GCs from patients were cultured for two to five days and then analyzed with mass spectrometry based shotgun proteomics.
2019-03-07 | PXD010658 | Pride
Project description:Granulosa cells (GCs) have many endocrine functions. However, in long-term in vitro culture GCs can change their properties. GCs were collected from hyper-stimulated ovarian follicles from woman during IVF procedures. They were cultured in in vitro long-term culture. RNA was collected after 1, 7, 15 and 30 days of culture. Expression microarrays were used for analysis, which allowed to identify groups of genes characteristic for particular cellular processes. In this study, we demonstrated the gene expression profile of long time primary cultured human ovarian granulosa cells.
2019-04-17 | GSE129919 | GEO
Project description:Human primary granulosa cells (GCs) derived from women, undergoing oocyte retrieval, can be cultured and are a cellular model for the study of human ovarian functions. In vitro they change rapidly, resembling initially cells of the preovulatory follicle and then cells of the corpus luteum. They are derived from individual patients and their different medical history, lifestyle and age lead to heterogeneity. Thus, cells can rarely be ideally matched for cellular experiments or, if available, only in small quantities. We reasoned that cryopreservation of human GCs may be helpful. Previous studies indicated feasibility of such an approach, but low survival of GCs was reported and consequences on GC functionality were only partially evaluated. We tested a slow freezing protocol (employing FCS and DMSO) of GCs upon isolation from follicular fluid. We compared cryopreserved and subsequently thawed cells with fresh, not cryopreserved ones, from the same patients. About 80 % of human GCs survived freezing/thawing. Neither morphology, nor levels of cell-cell contact, mitochondrial and steroidogenic genes were different between the two groups in cells cultured for 1-5 days. A proteomic analysis revealed no statistical significance in the abundance of a total of 5962 proteins. Both groups produced comparable basal levels of progesterone and responded similarly to hCG with elevation of progesterone. Taken together, we describe a rapid and readily available method for the cryopreservation of human GCs. We anticipate that it will allow future large-scale experiments and may thereby improve cellular studies with human ovarian cells.
2021-07-28 | PXD025632 | Pride
Project description:Human granulosa cells (GCs), obtained during medical reproductive procedures can be cultured and are a cellular model for the human ovary. Oxygen concentrations are regarded as important regulators of GCs. We examined consequences of low (1%) O2 versus standard atmospheric conditions in cultured human GCs for four days. A proteomic analysis of three pools of human GCs was performed. While differences between the pools of GCs were noted, the abundance of 133 proteins was significantly increased in hypoxia in all samples, whereas the abundance of 391 proteins was decreased.
2023-12-20 | PXD042934 | Pride
Project description:Ovarian follicle development is a complex and well-orchestrated biological process. Granulosa cells (GCs) are the most important somatic cells in the ovary, which play important roles in the growth of follicles. Three-dimensional (3D) chromatin architecture has emerged as an important regulator of transcription in eukaryote, but how these changes in granulosa cells during folliculogenesis of chicken are largely unexplored. Here, we performed an integrative analysis of transcriptomic and chromatin structural characterization for chicken follicular granulosa cells of 10 and 3 growth stages respectively.
2021-11-10 | GSE181756 | GEO
Project description:The mechanisms of oocyte meiotic defects and low competence during ovarian aging remains elusive for decades. Using Hi-C (genome-wide chromatin conformation capture) and Smart RNA-seq of oocytes from 6- weeks or 10- months aged ovaries, the abnormal loose chromatin structures and disturbing expression of meiosis associated genes at metaphase I phase were disclosed. Furthermore, the transcriptomic landscape of granulosa cells (GCs) surrounding oocytes from young and aged ovaries reveled that oocyte meiotic maturation was accompanied with a robust increased expression of genes involved with the mevalonate (MVA) pathway in GCs from young ovaries but these genes expression was not upregulated to counterpart level in GCs from aged ovaries.The inhibitor of MVA pathway of GCs, Statins significantly decreased polar body extrusion rate and increased the rate of irregularly assembled spindles and misaligned chromosomes remarkably in oocytes of culumus-oocyte complex (COCs) from young ovaries . Correspondingly, the activitor of MVA pathway of GCs, Geranylgeraniol ameliorated ovarian reserve and reduced meiotic defects in oocytes of COCs from aged ovaries. Mechanistically, MVA pathway activation in GCs culminated oocyte meiotic maturation by upregulating EGF signaling via LH receptor on GCs surrounding oocytes. Together, MVA pathway is a promising therapeutic target for prompting quality of oocytes from aged ovaries.
2023-02-26 | GSE175832 | GEO
Project description:Granulosa cells are essential to the growth, development, and maturation of oocytes and follicles. In patients with EMs-related infertility, follicle maturation disorders, poor oocyte quality may be closely related to GCs in the follicle. However, the molecular biological mechanism of GCs in EMs-related infertility has not been reported. Therefore, we tried to explore the possible causes of EMs-related infertility through the study of ovarian GCs in patients with EMs-related infertility and tubal factor infertility.
2021-03-05 | GSE168214 | GEO
Project description:The interaction between germ cells and somatic cells in the ovaries plays a crucial role in establishing the follicle reserve in mammals. Turner syndrome (TS) predominantly occurs in females who have either a partial or complete loss of one of their X chromosomes. Our understanding of the role granulosa cells (GCs) play in TS disease progression and pathogenesis remains limited. Here, we elevated GC differentiation efficiency up to the level of 80% differentiated cells from iPSCs. In our attempt to replicate the differentiation process of embryonic granulosa cells, we observed that specific genes—GATA4, FOXL2, AMHR2, CYP19A1, and FSH—were downregulated in Turner syndrome-derived granulosa cells (TS-GCs). Additionally, dysregulation of the cell cycle was observed in TS-GCs. To reveal the endogenous defects in the TS-GCs, we conducted a comparison of the global transcriptome patterns between differentiated granulosa cells derived from iPSCs in both healthy and Turner syndrome groups. The apelin/APJ pathway displayed a differential between the healthy and TS groups. Supplementation of apelin ligands and activation of apelin/APJ downstream signals via Akt/PKB restored the cell cycle progression and marker gene expression. We hypothesize that during early embryonic development failures in apelin/APJ signaling in GCs in Turner syndrome patients leads to abnormalities in ovarian development and consequently to early loss of oocytes and infertility.
2024-11-20 | GSE271780 | GEO
Project description:The Forkhead Box, FOXO1 and FOXO3, transcription factors regulate multiple functions in mammalian cells. Selective inactivation of the Foxo1 and Foxo3 genes in murine ovarian granulosa cells severely impairs follicular development and apoptosis causing infertility, and as shown herein, granulosa cell tumor (GCT) formation. Coordinate depletion of the tumor suppressor Pten gene in the Foxo1/3 strain enhanced the penetrance and onset of GCT formation A direct comparison of ovarian granulosa cells from wild type d25 and FOXO/PTEN knockout granulosa cell tumors.
2015-06-17 | E-GEOD-67662 | biostudies-arrayexpress
Project description:The mechanisms of oocyte meiotic defects and low competence during ovarian aging remains elusive for decades. Using Hi-C (genome-wide chromatin conformation capture) and Smart RNA-seq of oocytes from 6- weeks or 10- months aged ovaries, the abnormal loose chromatin structures and disturbing expression of meiosis associated genes at metaphase I phase were disclosed. Furthermore, the transcriptomic landscape of granulosa cells (GCs) surrounding oocytes from young and aged ovaries reveled that oocyte meiotic maturation was accompanied with a robust increased expression of genes involved with the mevalonate (MVA) pathway in GCs from young ovaries but these genes expression was not upregulated to counterpart level in GCs from aged ovaries.The inhibitor of MVA pathway of GCs, Statins significantly decreased polar body extrusion rate and increased the rate of irregularly assembled spindles and misaligned chromosomes remarkably in oocytes of culumus-oocyte complex (COCs) from young ovaries . Correspondingly, the activitor of MVA pathway of GCs, Geranylgeraniol ameliorated ovarian reserve and reduced meiotic defects in oocytes of COCs from aged ovaries. Mechanistically, MVA pathway activation in GCs culminated oocyte meiotic maturation by upregulating EGF signaling via LH receptor on GCs surrounding oocytes. Together, MVA pathway is a promising therapeutic target for prompting quality of oocytes from aged ovaries.
2023-02-26 | GSE175830 | GEO