Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA280703 | ENA |
REPOSITORIES: ENA
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Project description:We mated mice with floxed alleles of both Apc and Pten, to mice with floxed alleles for Arid1a, to obtain female mice with both copies of all three genes floxed. At 7 to 8 weeks of age the right ovarian bursal cavites of the mice were injected with 50 million plaque-forming units of adenovirus expressing Cre recombinase, which causes the floxed genes to be knocked out. Tumor tissue from 3 mice for each group was obtained at necropsy, RNA purified, and targets for Affymetrix arrays synthesized from the mRNAs. We used Affymetrix Mouse Genome 430 2.0 arrays, which hold 45101 probe-sets. Raw data was processed with Robust Multi-array Average algorithm (RMA). Data is log2-transformed transcript abundance estimates. We performed T-tests to compare the 3 vs 3 arrays. We supply a supplementary excel workbook that holds the same data as the data matrix file, but also holds the probe-set annotation at the time we analyzed the data, and some very simple statistical calculations, which select subsets of the probe-sets as differentially expressed. Consumers should consider obtaining more up-to-date probe-set annotation for the array platform. We have also supplied a second supplementary tar archive holding software and files to 1) perform permutation testing of the probe-set selection in order to estimate false discovery rates for the probe-sets we selected as differentially expressed, 2) perform enrichment testing of GO terms, and 3) to perform enrichment testing of KEGG pathways and 3000 curated gene sets from version 4 of the Molecular Signatures Database (MSigDB). The software is in "C". Ovarian endometrioid carcinoma samples from 3 female mice with conditional knockout of Apc and Pten, were compared to similar tumors from 3 female mice with conditional knockout of Apc, Pten, and Arid1a.
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Project description:Mice developed ovarian tumors after Arid1a and Pten double knockout. Gene expression profiles of 5 such ovarian tumors were compared with those of 4 normal ovaries. The differentially expressed genes were then used to investigate the similarity between the mouse ovarian tumors and major subtypes of human ovarian cancers. Total RNA obtained from the mouse ovarian tumors developing after Arid1a and Pten knockout compared to normal mouse ovaries.
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Project description:Mouse model of Endometrioid Ovarian Adenocarcinomas by conditional inactivation of PTEN and APC genes
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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.
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Project description:Somatic mutations in ARID1A, a SWI/SNF chromatin remodeling gene, are prevalent in human malignancies linked to endometriosis. Through comprehensive chromatin immunoprecipitation sequencing and transposase-accessible chromatin sequencing, we identified chromatin binding regions for ARID1A/BRG1-containing SWI/SNF remodeling complexes, which were enriched at enhancers and corresponded to a euchromatin state. ARID1A deletion caused global affinity reduction of BRG1-containing complexes in chromatin. Integrative analyses with transcriptome data obtained from endometrial epithelium and human endometrioid carcinomas identified high-confidence ARID1A-regulated genes that participate in tissue regeneration and tumorigenesis. Deletion of Arid1a was found to inactivate the TGF-β pathway and to accelerate tumor progression from pre-cancerous lesions to endometrioid carcinomas. Collectively, this study establishes functional roles of ARID1A mutation and loss in tumor progression.
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Project description:Somatic mutations in ARID1A, a SWI/SNF chromatin remodeling gene, are prevalent in human malignancies linked to endometriosis. Through comprehensive chromatin immunoprecipitation sequencing and transposase-accessible chromatin sequencing, we identified chromatin binding regions for ARID1A/BRG1-containing SWI/SNF remodeling complexes, which were enriched at enhancers and corresponded to a euchromatin state. ARID1A deletion caused global affinity reduction of BRG1-containing complexes in chromatin. Integrative analyses with transcriptome data obtained from endometrial epithelium and human endometrioid carcinomas identified high-confidence ARID1A-regulated genes that participate in tissue regeneration and tumorigenesis. Deletion of Arid1a was found to inactivate the TGF-β pathway and to accelerate tumor progression from pre-cancerous lesions to endometrioid carcinomas. Collectively, this study establishes functional roles of ARID1A mutation and loss in tumor progression.
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Project description:Somatic mutations in ARID1A, a SWI/SNF chromatin remodeling gene, are prevalent in human malignancies linked to endometriosis. Through comprehensive chromatin immunoprecipitation sequencing and transposase-accessible chromatin sequencing, we identified chromatin binding regions for ARID1A/BRG1-containing SWI/SNF remodeling complexes, which were enriched at enhancers and corresponded to a euchromatin state. ARID1A deletion caused global affinity reduction of BRG1-containing complexes in chromatin. Integrative analyses with transcriptome data obtained from endometrial epithelium and human endometrioid carcinomas identified high-confidence ARID1A-regulated genes that participate in tissue regeneration and tumorigenesis. Deletion of Arid1a was found to inactivate the TGF-β pathway and to accelerate tumor progression from pre-cancerous lesions to endometrioid carcinomas. Collectively, this study establishes functional roles of ARID1A mutation and loss in tumor progression.
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Project description:Mice developed ovarian tumors after Arid1a and Pten double knockout. Gene expression profiles of 5 such ovarian tumors were compared with those of 4 normal ovaries. The differentially expressed genes were then used to investigate the similarity between the mouse ovarian tumors and major subtypes of human ovarian cancers.
2014-04-05 | GSE56531 | GEO
Project description:99 individual ovarian tumors (37 endometrioid, 41 serous, 13 mucinous, and 8 clear cell carcinomas) and 4 individual normal ovary samples, each assayed on an Affymetrix HG_U133A array Experiment Overall Design: 99 individual ovarian tumors (37 endometrioid, 41 serous, 13 mucinous, and 8 clear cell carcinomas) and 4 individual normal ovary samples. RNA expression was analyzed using one Affymetrix HG_U133A array per sample.
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