Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA516973 | ENA |
REPOSITORIES: ENA
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Project description:Synovial sarcoma-like tumors were generated in mice by conditionally expressing the human t(X;18) translocation-derived SYT-SSX2 fusion protein. Using a Tamoxifen-inducible CreER system, we show here that sporadic expression of SYT-SSX2 across multiple tissue types leads to exclusive formation of synovial sarcoma-like tumors while its widespread expression is lethal. CreER-based sporadic expression both avoids the severe early developmental phenotypes associated with widespread SYT-SSX2 expression and better models natural pathogenesis of cancers where transformed cells usually arise within an environment of largely normal cells. Experiment Overall Design: Genetically engineered mice capable of conditionally expressing the human synovial sarcoma-associated SYT-SSX2 fusion oncogene were mated with genetically engineered mice expressing the CreER fusion protein from ROSA locus. The progenies harboring both CreER and SYT-SSX2 were followed up with or without tamoxifen injection. Tumors were generated in these mice that were dissected out, RNA extracted, and subjected to expression profiling by microarray analysis.
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Project description:Transcriptome comparisons by RNAseq of genetically engineered mouse models of synovial sarcoma, expressing SS18-SSX1 or SS18-SSX2 and having homozygous conditional genetic silencing of Pten or wildtype Pten.
2016-11-03 | GSE81476 | GEO
Project description:RNA sequencing of a primary tumors from a sarcoma genetically engineerted mouse model with activation of oncogenic Kras, deletion of p53 and deletion of Atrx, as compared to control sarcomas with identical genetic alterations but with wild-type Atrx. Tumors were either untreated or recieved 20 Gy of ionizing radiation and were harvested at 4 hrs, 3 day, or 6 day timepoints post treatment. For cell lines, isogenic ATRX wild-type (WT) and ATRX knockout (KO) paired isogenic cell lines treated with either 1.)interferon stimulatory DNA (ISD) and harvested 24 hours after treatment, 2)4 Gy ionizing radiation and harvested 36 hours after treatment, or 3) untreated control. These experiments help determine the differential impact of ATRX mutational status on cGAS-STING and type-I interferon signaling in soft tissue sarcoma.
2021-03-06 | GSE167537 | GEO
Project description:Fusion-negative rhabdomyosarcoma (FN-RMS) is the most common soft tissue sarcoma of childhood arising from undifferentiated skeletal muscle cells. Tumor cells derived from genetically engineered murine models are a valid tool to study cancer biology. In order to investigate the poor myogenic commitment of FN-RMS, we performed RNA sequencing of two cell lines derived from a previously described genetically engineered murine model of FN-RMS. We then performed bioinformatics analysis to compare the transcriptome with murine satellite cells, and identify the key factors that distinguish FN-RMS from skeletal muscle cells.
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Project description:<p>Pediatric Ewing sarcoma is a pediatric cancer that primarily arises from the bone. It is characterized by chimeric fusions of the EWS gene and an ETS family transcription factor. In this study, we performed massively parallel sequencing of a larger collection of Ewing sarcoma tumors to define the genomic landscape of this disease. We found that these tumors are among of the most genetically normal cancers currently characterized. There was also a marked absence of recurrent mutations in immediately targetable signaling transduction pathway genes. In this study we answer outstanding questions about ETS transcription factor expression, effects of treatment on mutational burden in Ewing sarcoma tumors, and describe patterns of tumor evolution. We also found that loss-of-function mutations in STAG2 were present in approximately 15% of Ewing sarcoma tumors and loss of STAG2 expression was associated with disease metastasis in this patient cohort.</p>
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Project description:To characterize the impact of KRAS co-mutations KEAP1 and STK11/Lkb1 on the metabolic and immune microenvironment of lung adenocarcinoma in immune-intact models, we generated a cohort of genetically engineered mouse models (GEMMs) to reflect the diverse tumor suppressor landscape seen in patients. Mice carrying the KrasG12D allele (K)21 were crossed with Keap1flox/flox (KK)22 and/or Lkb1flox/flox (KKL, KL)23 mice and genetic recombination induced by intranasal inhalation of Ad5-CMV-Cre adenovirus. We interrogated the metabolites present in lung tumor nodules collected from cohorts of KK, KL and KKL mice.
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Project description:Expression data from synovial sarcoma-like tumors induced in a genetically engineered mouse model
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