Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA144417 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Gene expression profiles of 10 uterine leiomyomas and their matched normal myometrium specimens were studied using Affymetrix GeneChip Human Genome U133 Plus 2.0 gene expression arrays. Four tumors displayed a codon 44 mutation, four carried a intron 1 mutation, and the remaining two displayed no MED12 mutation.
2011-08-26 | GSE30673 | GEO
Project description:Profiles of genome-wide DNA methylation were investigated in leiomyomas and in myometrium with and without leiomyomas. Profiles of DNA methylation in the myometrium with and without leiomyomas were quite similar while those in leiomyomas were distinct. Bisulphite converted DNA from the three uterine leiomyoma, three myometrium with leiomyoma and three myometrium without leiomyoma were hybridised to the Illumina infinium HumanMethylation450 BeadChip.
2013-09-01 | E-GEOD-45187 | biostudies-arrayexpress
Project description:The objective of this study was to elucidate the expression profile of coding RNA transcripts in leiomyomas with and without MED12 mutation and their paired myometrium.
2023-03-01 | GSE224991 | GEO
Project description:Profiles of genome-wide DNA methylation were investigated in leiomyomas and in myometrium with and without leiomyomas. Profiles of DNA methylation in the myometrium with and without leiomyomas were quite similar while those in leiomyomas were distinct. Total RNA from the three uterine leiomyoma, three myometrium with leiomyoma and three myometrium without leiomyoma were analyzed with the Affymetrix GeneChip Mouse Gene 1.0 ST Array.
2013-09-01 | E-GEOD-45188 | biostudies-arrayexpress
Project description:Uterine leiomyomas (ULs, or fibroids) are the most prevalent clinically significant tumors in reproductive-aged women, frequently causing abnormal uterine bleeding, pelvic pain, and infertility. Although surgical resection is effective for these benign neoplasms, the development of non-invasive, targeted therapies is an urgent clinical need. To bridge the gap between genotype and phenotype in ULs, we employed an integrated multi-omics strategy focused on the recurrent MED12 p.G44D mutation.
2025-12-18 | MSV000100276 | MassIVE
Project description:Background and objective: Uterine leiomyomas may arise from somatic stem or progenitor cells, leading to abnormal activation, proliferation, and clonal expansion. In organ cultures of myometrium and leiomyoma, differentiated cells decline after 7 days, whereas resident stem cells may persist within their niches and subsequently become activated, proliferate, and repopulate tissue slices. This study investigated gene expression programs that regulate the proliferation and differentiation of myometrial and MED12-mutant leiomyoma stem cells during long-term organ culture. Results: Comparison of normal and tumor tissues at baseline and after culture revealed several fibroid transcriptional signatures that were preserved during prolonged ex vivo culture. The MED12 mutation persisted in the repopulated fibroid slices, supporting the hypothesis that fibroids originate from stem or progenitor cells harboring MED12 mutation. Both tissues activated hypoxia and stemness-associated programs, including robust induction of HMGA1, HMGA2, and PLAG1. Myometrium induced KITLG/KIT expression, a limited number of CD49b (ITGA2)-stem-positive and Ki67-positive proliferating cells, indicating restrained proliferation, likely mediated by upregulation of ITGA2-AS1. Additionally, myometrial slice cultures were enriched for immune and endothelial/vascular programs, including several SOX family members. In contrast, leiomyoma cultures exhibited widespread CD24/CD73 expression, focal CD49b clusters, high Ki67 positivity, metabolic reprogramming toward complex carbohydrate degradation, SLC-mediated transport, and a low-PLIN2/high-ACLY signature. Uterine leiomyoma cultures repressed genes involved in vascular homeostasis (e.g., PLPP3) and preferentially activated pathways related to smooth muscle excitability and vesicle secretion. Extracellular matrix (ECM) remodeling was strongly pro-fibrotic in leiomyomas, with significant upregulation of several TGFB-regulated and related genes, a disrupted balance of KLF regulators, including loss of the anti-fibrotic repressor KLF10 and induction of the pro-fibrotic KLF5 factor, and broad upregulation of integrins. Differential expression of multiple HOX genes further distinguished ECM regulation between tissues. From niche survival to pro-fibrotic expansion, the study delineates checkpoints primed for intervention, highlighting potential therapeutic opportunities targeting profibrotic signaling, metabolic dependencies, and integrin-mediated ECM interactions. Conclusion: Long-term organ culture recapitulates key molecular features of fibroids and reveals tissue-specific mechanisms governing stem cell activation and differentiation. These findings identify potential therapeutic opportunities and establish long-term organ culture as a robust, physiologically relevant platform for investigating normal and tumor biology.
2026-05-11 | GSE309174 | GEO
Project description:Our study seeks to identify genes differentially expressed between uterine leiomyomas and normal myometrial tissue. This series consists of samples derived from normal myometrium and uterine leiomyomas obtained from fibroid afflicted patients.Total RNA was extracted from samples, converted to biotin-labeled cRNA, hybridized to oligonucleotide arrays, and followed by model based expression analysis.,In order to select differentially expressed genes of interest, dChip model-based expression analysis was employed. Significant genes were identified, utilizing the dChip software, as having an average fold change of > +1.5 or < -1.5 between leiomyoma and normal myometrium and p < 0.05. Under these conditions the 226 genes in the following list were identified.
2007-09-28 | E-GEOD-593 | biostudies-arrayexpress
Project description:Uterine leiomyomas are the most common benign tumor in humans causing significant morbidity with vaginal bleeding, pelvic pressure and pain. Histologically, leiomyomas show a large degree of extracellular matrix disorganization. I am working with a colleague who recently found Notch pathway gene expression were clearly altered in fibroids (“Differential expression of the Notch signal transduction pathway: ligands, receptors and Numb in uterine leiomyomas vs. myometrium,” G. Christman, H. Tang, I. Ahmad, J. Stribley, Fertility and Sterility, Volume 88, Supp 1, S72, September 2007). Glycosaminoglycan expression was found to be over-expressed in uterine leiomyomas compared to myometrial samples (Fertility and Sterility, Vol 88 Supp 1, S106, September, 2007), but glycosyltransferase and glycosidase expression has not been reported. We have purified RNA samples from paired uterine leiomyoma and normal myometrium from a previous clinical study. Dr. Domino's laboratory hypothesis is that Notch pathway activation inhibits apoptosis in uterine leiomyomas leading to fibroid growth. Notch ligands are fucosylated glycans. The bulk of a fibroid is the extracellular matrix yet little has been studied on leiomyocyte expression of enzymes that model glycans in the extracellular matrix. RNA preparations of paired samples of excess human tissues from hysterectomies, with two different groups normal myometrium, and leiomyoma tumors were sent to Microarray Core (E). The RNA was amplified, labeled, and hybridized to GLYCO_v3 microarrays.
2011-04-29 | E-GEOD-28945 | biostudies-arrayexpress
Project description:Our study seeks to identify genes differentially expressed between uterine leiomyomas and normal myometrial tissue. This series consists of samples derived from normal myometrium and uterine leiomyomas obtained from fibroid afflicted patients.Total RNA was extracted from samples, converted to biotin-labeled cRNA, hybridized to oligonucleotide arrays, and followed by model based expression analysis. In order to select differentially expressed genes of interest, dChip model-based expression analysis was employed. Significant genes were identified, utilizing the dChip software, as having an average fold change of > +1.5 or < -1.5 between leiomyoma and normal myometrium and p < 0.05. Under these conditions the 226 genes in the following list were identified. Keywords: other
2003-10-17 | GSE593 | GEO
Project description:Profiles of genome-wide DNA methylation were investigated in leiomyomas and in myometrium with and without leiomyomas. Profiles of DNA methylation in the myometrium with and without leiomyomas were quite similar while those in leiomyomas were distinct.
2013-09-01 | GSE45188 | GEO