Study on the relationship and mechanism between intestinal flora imbalance and endometrial cancer
Ontology highlight
ABSTRACT:
DISEASE(S): Endometrial Carcinoma
PROVIDER: 2726318 | ecrin-mdr-crc |
REPOSITORIES: ECRIN MDR
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Project description:The gut-uterus axis plays a pivotal role in the pathogenesis of endometrial cancer (EC). However, the correlations between the endometrial microbiome and endometrial tumor transcriptome in patients with EC and the impact of the endometrial microbiota on hematological indicators have not been thoroughly clarified. In this prospective study, endometrial tissue samples collected from EC patients (n = 30) and healthy volunteers (n = 10) were subjected to 16S rRNA sequencing of the microbiome. The 30 paired tumor and adjacent nontumor endometrial tissues from the EC group were subjected to RNAseq. Result: We found that Pelomonas and Prevotella were enriched in the EC group with a high tumor burden. Further transcriptome analysis identified 8 robust associations between Prevotella and fibrin degradation-related genes expressed within ECs. Conclusions: Our results suggest that the increasing abundance of Prevotella in endometrial tissue combined with high serum DD and FDP contents may be important factors associated with tumor burden.
2021-10-13 | GSE183185 | GEO
Project description:Endometriosis is a chronic, estrogen-dependent gynecological condition that affects approximately 10% of women of reproductive age. The most widely accepted theory of the etiology of endometriosis includes the process of retrograde menstruation, where menstrual effluent travels up the Fallopian tubes, accesses the peritoneal cavity, and in some people is able to establish endometriotic lesions. Recent reports suggest the uterus is not devoid of bacteria, as was once believed. Thus, the refluxed menstrual effluent may also carry bacteria along with it, and this bacteria has been suggested to contribute to inflammation, and establishment and growth of endometriotic lesions. Here, we sought to compare and contrast the uterine bacteria (endometrial microbiota) in women with surgically confirmed presence or absence of endometriosis using next-generation 16S rRNA gene sequencing. We obtained an average of more than 9000 sequence reads per endometrial biopsy, and found that the endometrial microbiota of women with endometriosis was more diverse (greater Shannon Diversity Index and greater proportion of ‘Other’ taxa) than that of symptomatic controls (women with pelvic pain, but with surgically confirmed absence of endometriosis; diagnosed with other benign gynecological conditions at surgery). The difference in endometrial microbiotas was supported in unsupervised cluster analyses where some clustering of endometrial microbiota by disease status (endometriosis vs. controls) was observed. The bacterial taxa enriched in the endometrial microbiota of women with endometriosis belonged to the Actinobacteria phylum, Oxalobacteraceae and Streptococcaceae families, and Tepidimonas genus, while those enriched in the symptomatic controls (without endometriosis) belonged to the Burkholderiaceae family, and Ralstonia genus. Taken together, our findings suggest the endometrial microbiota is perturbed in people with endometriosis.
2021-04-16 | GSE172172 | GEO
Project description:Interventions: different phenotypes vs. HNPCC group vs. healthy control group:Nil
Primary outcome(s): Alpha diversity analysis;ß-diversity analysis;LDA EffectSize (LEfSe) analysis
Study Design: Factorial
| 2701429 | ecrin-mdr-crc
Project description:Endometrial microbiota Raw sequence reads
| PRJNA1017407 | ENA
Project description:The molecular events implicated in the development of endometrial carcinosarcoma remain poorly understood. Using complementary DNA microarrays, we analyzed a group of 15 endometrial carcinosarcomas and compared their gene expression profiles with those obtained from a group of 23 endometrioid endometrial carcinomas. We demonstrated changes in the expression of genes modulating processes such as the epithelial to mesenchymal transition, muscle differentiation, the expression of cancer/testis antigens, and immune response in endometrial carcinosarcomas. The high mobility group AT-hook 2 gene is an embryonic nuclear factor that mediates epithelial to mesenchymal transition in various tumor models, and it was among the genes overexpressed in endometrial carcinosarcomas. High mobility group AT-hook 2 overexpression was confirmed in 54% of endometrial carcinosarcomas by quantitative real time-polymerase chain reaction and immunohistochemistry. Moreover, we found a significant inverse correlation between the expression of high mobility group AT-hook 2 and let-7b, a member of the let-7 family of microRNAs that represses high mobility group AT-hook 2 expression. These changes were also associated with overexpression of Lin28B, a suppressor of microRNA biogenesis that is implicated in cancer progression and metastasis. Finally, high mobility group AT-hook 2 overexpression, which was detected in less than 3% of endometrioid endometrial carcinomas, was observed in many nonendometrioid carcinomas (46% of 28 samples). This pattern of expression, restricted to nonendometrioid carcinomas and endometrial carcinosarcomas, reflects a role for high mobility group AT-hook 2 in endometrial carcinogenesis that is associated with aggressive phenotypes and points to its potential use as a marker to distinguish between endometrioid and nonendometrioid tumors.
2012-11-01 | GSE33723 | GEO
Project description:Patients with endometrial hyperplasia representing preliminary stages of endometrial cancer have shown to respond to therapy in 100% of the cases when treated with levonorgestrel -impregnated intrauterine device. Antiproliferative effect has also been reported after application of an anti-progestin impregnated intrauterine device which showed to induce endometrial atrophy. The intention of the present study was to obtain more information of novel therapeutic targets for hormonal treatment in endometrial hyperplasia and endometrial cancers. Gene expression of signaling pathways after stimulation of Ishikawa cells with high doses of progesterone (10 μM) or Mifepristone (10 μM) was performed. After using an oligo microarrays representing 24,650 human genes and 37,580 gene transcripts, 6,154 genes remained after pre-processing and filtering. This resulted in a total of 993 up-regulated genes with 189 genes for progesterone and 255 genes for Mifepristone. The 550 down regulated genes were distributed with 256 genes for progesterone, 127 genes for RU 486. The results showed that genes presenting the epidermal growth factor (EGF)/MAP-kinase pathway were significantly over-represented by progesterone treatment, whereas, by Mifepristone treatment genes involved in the p53 pathway were also up-regulated (data not shown). These genes may be interesting as potential new therapeutic targets in endometrial hyperplasia and endometrial cancer, as candidate genes for therapy response or as candidate markers for tumor progression. 20 samples, 4 different condition groups with 5 replicates for each group, linear factorial experimental design. Short time (4hrs) dose response to progesterone and Mifepristone in combination and alone. Only 18 samples are represented in this Series.
2010-05-06 | E-GEOD-14713 | biostudies-arrayexpress
Project description:Although the function of COUP-TFII in uterine decidualization has been described in mice, its role in the human uterus remains unknown.To interrogate the role of COUP-TFII in human endometrial function, we utilized a siRNA-mediated loss of function approach in primary human endometrial stromal cells. Primary human endometrial stromal cells (HESCs), coup-TFII siRNA group and control group Two group comparison
2014-01-07 | E-GEOD-47052 | biostudies-arrayexpress
Project description:Microbiota in endometrial pathology and cancer
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Project description:We find that the Endometrial Blood Vessel Generation is an important part ofthe establishment of Endometrial Receptivity. We have demonstrated inprevious experiments: Acupuncture in IVF-ET treatment can effectively improve Endometrial Receptivity and improve the pregnancy rate, therefore, we proposea VEGF signaling pathway in Acupuncture can improve Endometrial receptivity, thus improving the success rate of IVF-ET Hypothesis. Around the hypothesisintends to adopt the rat model of IVF-ET, through methods of acupuncture, acupuncture combined with blocker, research the related indexes effect performance that acupuncture on the VEGF signaling pathway in endometrial. Using experimental techniques such as Morphological observation, ELIAS, Immunohistochemistry, Real-time quantitative PCR, Methylation-sensitive high-resolution melting curve method(MS-HRM), to complete the research ofobserving the Effect of acupuncture interference IVF-ET, Blocking the impaction VEGF to the effect, the relationship VEGF or gene methylation inits receptors with effect. From the molecular level clarify the adverse effects and mechanism action that acupuncture will improve IVF-ET superovulation of endometrial receptivity, through adjust VEGF signaling pathway, to provide a scientific basis for acupuncture in IVF-ET treatment
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Project description:Proper decidualization is vital in preparation for a potential embryo receptivity, placentation, menstrual health and subsequent endometrial regeneration. Given the importance of extracellular vesicles (EVs) in intercellular communication, and recently in embryo implantation and indicators of menstrual cycle and fertility, we investigated their role during decidualization. Overall, this study provides an insight into distinct variation in sEV composition depending upon the level of decidualization of endometrial stromal cells, with the signaling potential to coordinate endometrial health ranging from embryo implantation, facilitating placentation and subsequent endometrial regeneration.
2021-11-17 | PXD026342 | Pride