Macaca mulatta
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA118235 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:To study the miRNA expression profiles and explore the underlying roles of Helicobacter pylori (H. pylori), miR-196a/b-5p, and IFG2BP1 in the carcinogenesis of gastric mucosa.
2023-11-30 | GSE216285 | GEO
Project description:Promoter hypermethylation occurs in human gastric cancers, but whether the deregulated genes contribute to the multi-step Helicobacter pylori (H pylori)-induced gastric carcinogenesis remains unclear. We used Microarray-based Methylation Assessment of Single Samples (MMASS) to identify differential methylated genes in 10 human gastric cancer tissues.
2012-12-28 | GSE39599 | GEO
Project description:Forkhead box (Fox) proteins constitute an evolutionarily conserved family of transcriptional regulators whose deregulations lead to tumorigenesis. However, their regulation and function in gastric cancer are unknown. Promoter hypermethylation occurs during Helicobacter pylori (H pylori)-induced gastritis, but whether the deregulated genes contribute to the multi-step gastric carcinogenesis remains unclear. FOXD3 was found to be hypermethylated in a mouse model of H pylori infection and possess tumor-suppressive functions in gastric cancer cell lines. In order to characterize the direct targets of FOXD3 that confer its actions, we performed ChIP-chip in N87 gastric cancer cell line which express low level of FOXD3 in the nuclei of a sub-population of cells. Promoter hypermethylation occurs during Helicobacter pylori (H pylori)-induced gastritis, but whether the deregulated genes contribute to the multi-step gastric carcinogenesis remains unclear. We used MethylCap-microarray to identify hypermethylated genes in a mouse model of H pylori infection.
2012-12-28 | GSE39490 | GEO
Project description:BACKGROUND & AIMS: Gastric cancer results from a combination of Helicobacter pylori (H pylori) infection, exposure to dietary carcinogens, and predisposing genetic make-up. Because the role of these factors in gastric carcinogenesis cannot be determined readily in human beings, the present study examined the role of an oral carcinogen and H pylori infection in rhesus monkeys. METHODS: Gastroscopies were performed in 23 monkeys assigned to 4 groups: controls; nitrosating carcinogen ethyl-nitro-nitrosoguanidine administration alone; and inoculation of a virulent H pylori strain alone (H), or in combination with ethyl-nitro-nitrosoguanidine (EH). Follow-up gastroscopies and biopsies were performed at 3-month intervals for 5 years for pathologic and molecular studies. RESULTS: Postinoculation, H and EH groups showed persistent infection and antral gastritis. Starting at 2 and 5 years, respectively, gastric intestinal metaplasia and intraepithelial neoplasia developed in 3 EH monkeys but in no other groups. Transcriptional analysis of biopsies at 5 years revealed group-specific expression profiles, with striking changes in EH monkeys, plus a neoplasia-specific expression profile characterized by changes in multiple cancer-associated genes. Importantly, this neoplastic profile was evident in nonneoplastic mucosa, suggesting that the identified genes may represent markers preceding cancer. CONCLUSIONS: Gastric intraglandular neoplasia is induced in primates when H pylori infection is associated with consumption of a carcinogen similar to the nitrosaminesfound in pickled vegetables, suggesting that H pylori and the carcinogen synergistically induce gastric neoplasia in primates. Monkey arrays used for analysis of the affect of Helicobacter pylori and diet on development of gastric cancer. Each RNA was hybridized against a common reference. Biopsy numbers represent the following in terms of descriptions used in publication of the paper... Each set of numbers/descriptions is organized in the following order: Biopsy#; Monkey#; Group Code on Fig 5 Biopsy #4674; AB24; E; E1 Biopsy #4684; 16G; E; E2 Biopsy #4716; 89G; H; H1 Biopsy #4724; 54H; H; H2 Biopsy #4720; 20G; H; H3 Biopsy #4710; 92F; C; C1 Biopsy #4714; 26G; C; C2 Biopsy #4712; 92G; C; C3 Biopsy #4726; 08G; H; H4 Biopsy #4722; 57G; H; H5 Biopsy #4718; 85G; H; H6 Biopsy #4694; 48H; HE NON; HE1 Biopsy #4686; 59H; HE NON; HE2 Biopsy #4690; 81G; HE NEO; HE3 Biopsy #4696; 36G; HE NEO; HE4 Biopsy #4692; 63G; HE NEO; HE5 Biopsy #4680; 76G; E; E3 Biopsy #4682; 52G; E; E4 Biopsy #4678; 15G; E; E5 Biopsy #4676; 93G; E; E6 Biopsy #4688; 47H; HE NON; HE6 A pathogenicity experiment design type is where an infective agent such as a bacterium, virus, protozoan, fungus etc. infects a host organism(s) and the infective agent is assayed. Infection: Rhesus monkeys were infected with H. pylori (+/-) Compound Based Treatment: Rhesus monkeys were treated with ENNG (N-ethyl-N-nitrosoguanidine) (+/-) pathogenicity_design
2009-10-07 | E-GEOD-18434 | biostudies-arrayexpress
Project description:Helicobacter pylori (H. pylori) infection is a key initiating factor in the Correa cascade of gastric carcinogenesis, but the comprehensive understanding of the pathogenic mechanisms underlying H. pylori-induced GC remains elusive. Here, we generated a single-cell atlas of gastric tumorigenesis comprising 18 specimens of gastritis, intestinal metaplasia and gastric cancer (GC) with or without H. pylori infection. We identified 48 distinct cell subpopulations including novel rare subtypes, and revealed the influence of H. pylori infection on cellular heterogeneity across neoplastic lesions.
2023-12-11 | GSE249874 | GEO
Project description:Forkhead box (Fox) proteins constitute an evolutionarily conserved family of transcriptional regulators whose deregulations lead to tumorigenesis. However, their regulation and function in gastric cancer are unknown. Promoter hypermethylation occurs during Helicobacter pylori (H pylori)-induced gastritis, but whether the deregulated genes contribute to the multi-step gastric carcinogenesis remains unclear. FOXD3 was found to be hypermethylated in a mouse model of H pylori infection and possess tumor-suppressive functions in gastric cancer cell lines. In order to characterize the direct targets of FOXD3 that confer its actions, we performed ChIP-chip in N87 gastric cancer cell line which express low level of FOXD3 in the nuclei of a sub-population of cells. Promoter hypermethylation occurs during Helicobacter pylori (H pylori)-induced gastritis, but whether the deregulated genes contribute to the multi-step gastric carcinogenesis remains unclear. We used MethylCap-microarray to identify hypermethylated genes in a mouse model of H pylori infection. human Samples: Human gastric tumor cell line, N87 was grown in RPMI1640 supplemented with 10% fetal bovine serum. ChIP assays were performed using anti-FOXD3 antibody. The immunoprecipitated-FOXD3 and -IgG DNA were used to probe the Agilent human ChIP-chip arrays. mouse Samples: Two-condition experiment, H pylori-infected vs. control gastric tissues. 2 dye-swap replicates.
2012-12-28 | E-GEOD-39490 | biostudies-arrayexpress
Project description:Resveratrol prevents diet-induced arterial degeneration and stiffening in nonhuman primates
| PRJNA196649 | ENA
Project description:Helicobacter pylori (H. pylori) is a human pathogen that infects almost half of the world’s population. Infection with H. pylori is frequently associated with chronic gastritis and can even lead to gastric and duodenal ulcers and gastric cancer. Although the persistent colonization of H. pylori and the development of H. pylori-associated gastritis remain poorly understood, it is believed that, in gastric mucosa, the modulated gastric epithelial cells (GECs) by H. pylori are key contributors. We used microarrays to detail the global programme of gene expression in Helicobacter pylori infected-gastric epithelial cell line AGS cells and identified up-regulated genes induced by Helicobacter pylori infection.
2024-04-18 | GSE264263 | GEO
Project description:Promoter hypermethylation occurs in human gastric cancers, but whether the deregulated genes contribute to the multi-step Helicobacter pylori (H pylori)-induced gastric carcinogenesis remains unclear. We used Microarray-based Methylation Assessment of Single Samples (MMASS) to identify differential methylated genes in 10 human gastric cancer tissues. Two-condition experiment, gastric cancers from patients (n = 5 per group) who survived 5 years or more (long-term survivors group) and who died of disease prior to 5 years (short-term survivors group)
2012-12-28 | E-GEOD-39599 | biostudies-arrayexpress
Project description:In this study, we treated the gastric cancer cell line AGS with PBS and Helicobacter pylori to perform RNA-seq analysis. A total of 18,308 different circRNA candidates were obtained in the experiment.Compared with the control, 101 significantly differentially expressed circRNAs were identified in the AGS cells infected with H. pylori, including 84 upregulated circRNAs and 17 downregulated circRNAs.Then, circMAN1A2 with the most significant expression difference was selected according to the sequencing results to study the epigenetic mechanism of H. pylori-induced gastric carcinogenesis.
2021-09-09 | GSE183628 | GEO