Tamoxifen transcriptional regulation in human endometrial stromal cells (HESC)
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PROVIDER: PRJNA418377 | ENA |
REPOSITORIES: ENA
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Project description:Tamoxifen (TAM), used for adjuvant therapy of breast cancer, also increases the risk of endometrial cancer. To compare TAM-induced transcriptional changes we examined human and monkey uterus, as well as cultured normal human mammary epithelial cells (NHMECs) and human endometrial stromal cells (HESCs). Uterine DNA from TAM-exposed women (n=15) and monkeys (Erythrocebus patas n=5, and Macaca fascicularis n=12) showed no difference in 5-methyl-cytosine (5-meC) levels compared to unexposed controls. Studies comparing NHMECs and HESCs exposed to 10 µM TAM for 48 hr showed cell-specific differences by microarray, with confirmation by RT-PCR. In TAM-exposed NHMECs there was significant up-regulation of interferon signaling and immune response pathways, while the TAM-exposed HESCs showed significant up-regulation of steroid and fatty acid biosynthesis pathways. Promoter region CpG islands of several genes highly up-regulated by TAM in each cell type (NHMECs: MX1 and STAT1; HESCs: PPARG, SREBF2, HMCGS and Prune2), were examined for 5-meC, but the levels (≤ 7%), were too low to measure accurately. We also examined several histone H3 lysine dimethylases by Western blot, and showed a significant depletion of total H3 histone, H3K4, H3K27 and H3K36 in TAM-exposed HESCs, with similar but non-significant changes in TAM-exposed NHMECs. Whereas TAM exposure had no discernible effect on 5-meC levels in primate uterus, TAM exposure induced up-regulation of different transcriptional pathways in NHMECs and HESCs, and concomitantly depleted H3 histone lysine dimethylase levels. Therefore, transcriptional dysregulation by TAM, including reduction of histone H3 dimethylase levels, may be related to TAM-induced endometrial carcinogenesis.
2018-11-01 | GSE106890 | GEO
Project description:Tamoxifen transcriptional regulation in human mammary epithelial and endometrial stromal cells
| PRJNA418328 | ENA
Project description:Immune system cells and cells of the endometrium have long been proposed to interact in both physiological and pathological processes. The current study was undertaken to examine communication between cultured monocytes and endometrial stromal cells and also to assess responses of endometrial stromal cells to treatment with estradiol (E) in the absence and presence of medroxyprogesterone acetate (P). A telomerase-immortalized human endometrial stromal cell line (T-HESC) and the U-937 monocyte cell line were used. T-HESC were treated with E ± P ± monocyte conditioned medium; U-937 were treated ± T-HESC conditioned medium. Gene expression in response to treatment was examined by DNA microarray. Bi-directional communication, as demonstrated by changes in gene expression, clearly occurred between U-937 monocytes and T-HESC endometrial stromal cells.
2009-11-16 | GSE14808 | GEO
Project description:Decidualization of human endometrial stromal cells (HESCs) is a critical process in the establishment of uterine receptivity and successful pregnancy. It involves profound cellular and molecular changes, including alterations in energy metabolism, which are necessary to support the increased metabolic demands of the decidualizing cells. The enzyme lysophosphatidylcholine acyltransferase 3 (LPCAT3), known for its role in lipid remodeling, is hypothesized to influence the metabolic shifts occurring during HESC decidualization. To explore this hypothesis, we employed RNA sequencing (RNA-Seq) to assess the transcriptomic changes in HESCs following LPCAT3 knockdown during the decidualization process.
2026-08-08 | GSE274335 | GEO
Project description:Our previous studies have shown that bone morphogenetic protein 2 (BMP2), a morphogen belonging to the TGFM-NM-2 superfamily, is markedly induced in human primary endometrial stromal cells (HESC) as they undergo differentiation in response to steroid hormones and cAMP. WNT4 is a downstream target of BMP2 regulation in these cells. To identify the common downstream targets of BMP2 and WNT4 in human endometrial stromal cells, we performed gene expression profling of human ensometrial stromal cell transduced with BMP2 or WNT4 adenovirus. Gene expression profiling revealed that FOXO1, a forkhead family transcription factor and a known regulator of HESC differentiation, is a common downstream mediator of both BMP2 and WNT4 signaling. These studies uncovered a linear pathway involving BMP2, WNT4, and FOXO1 that operates in human endometrium to critically control decidualization. Human endometrial stromal cells were transduced with recombinant adenovirus expressing BMP2, WNT4, or a negative control GFP at MOI 50:1 in 2 ml of culture medium. After transduction for 24 h, the viral particles were removed and the cells were treated with E+P for 3 days to induce decidualization (n=3 for each treatment), pooled total RNA from these cells was then hybridized to high density affymetrix microarrays according to the Affymetrix protocol (Human Genome HG-U133 A2.0 Array) .
2013-02-08 | E-GEOD-39949 | biostudies-arrayexpress
Project description:Our previous studies have shown that bone morphogenetic protein 2 (BMP2), a morphogen belonging to the TGFβ superfamily, is markedly induced in human primary endometrial stromal cells (HESC) as they undergo differentiation in response to steroid hormones and cAMP. WNT4 is a downstream target of BMP2 regulation in these cells. To identify the common downstream targets of BMP2 and WNT4 in human endometrial stromal cells, we performed gene expression profling of human ensometrial stromal cell transduced with BMP2 or WNT4 adenovirus. Gene expression profiling revealed that FOXO1, a forkhead family transcription factor and a known regulator of HESC differentiation, is a common downstream mediator of both BMP2 and WNT4 signaling. These studies uncovered a linear pathway involving BMP2, WNT4, and FOXO1 that operates in human endometrium to critically control decidualization.
2013-02-08 | GSE39949 | GEO
Project description:Endometriosis is characterized by progesterone resistance and is associated with infertility. KrM-CM-<ppel-like Factor 9 (KLF9) is a progesterone receptor (PGR)-interacting protein, and mice null for Klf9 are subfertile. Whether loss of KLF9 contributes to progesterone resistance of eutopic endometrium of women with endometriosis is unclear. The aim of this study was to investigate KLF9 and PGR co-regulation of human endometrial stromal cell (HESC) transcriptome network. Microarray gene expression analysis was conducted in decidualizing HESC by silencing the expression of KLF9 and PGR, alone or in combination by a siRNA approach, to identify additional KLF9 and PGR co-regulated genes and signaling networks/pathways. HESC also treated with 8-bromo-cAMP, 17M-CM-^_-estradiol, and medroxyprogesterone acetate (cAME) to mimic stromal progression from a proliferative to a differentiated state.
2012-04-03 | E-GEOD-31683 | biostudies-arrayexpress
Project description:Cytokines are implicated in the development of inflammatory diseases such as endometriosis. This project was designed to test the hypothesis that specific cytokines that are secreted by macrophages, such as tumor necrosis factor α (TNFα) and interleukin 1 beta (IL1β), cause gene expression changes in endometrial stromal cells. Telomerase-immortalized human endometrial stromal cells (T-HESC) were treated with TNFα (5ng/ml) ± IL1β (1ng/ml). DNA microarray and real time RT-PCR were used to study the gene expression changes in T-HESC cells. Two hundred and nineteen genes featuring in various gene ontologies were found to be differentially expressed in T-HESC cells treated with TNFα ± ILIβ. The gene ontologies included functions expected to be associated with the development of endometriosis such as peptidases, cell adhesion, cell death/apoptosis, cell cycle, growth factors, cytoskeletal organization, defense/immune system, signal transduction, and transcriptional regulation. The differential expression of 4 genes (interleukin 8 (IL8), interleukin 6 (IL6), IL1β and matrix metalloproteinase (MMP3) was confirmed by real time RT-PCR. All four genes were up-regulated in response to TNFα ± ILIβ in T-HESC cells. The effect of TNFα ± ILIβ on migration and invasion of T-HESC cells, as measured with Boyden chambers, was not affected by treatment with these cytokines.
2014-08-01 | GSE40007 | GEO
Project description:RNA-Seq analysis LPCAT3 knockdown effect on primary human endometrial stromal cells(HESC).
| PRJNA1145986 | ENA
Project description:Tamoxifen, a small molecule inhibitor that binds the Estrogen Receptor alpha (ERα), blocks breast cancer progression while increasing the risk for endometrial cancer. In this study, we assessed genome-wide ERα-chromatin interactions in surgical specimens of endometrial tumors from patients who were previously treated for breast cancer with tamoxifen, and endometrial tumors from patients who were treated without tamoxifen. We compared ERα and signal at differential ERα sites in endometrial tumors of nine patients who received tamoxifen with endometrial tumors with six patients who never used tamoxifen. In addition, we performed H3K27ac (a marker for activity) ChIPs on the above mentioned endometrial tumors, and assed this signal at differential ERα sites. Compared to endometrial tumors of non-users, tamoxifen-associated endometrial tumors exposed higher H3K27ac intensities at ERα sites that are enriched in tamoxifen-associated endometrial tumors. Four tamoxifen-associated endometrial tumors that we used in our analysis have been previously published as Tumor A, B, D, and E in GSE81213.
2017-03-07 | GSE94523 | GEO