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Novel cancer gene discovery using a forward genetic screen in RCAS-PDGFB driven gliomas

ABSTRACT: Novel cancer gene discovery using a forward genetic screen in RCAS-PDGFB driven gliomas

PROVIDER: PRJNA854593 | ENA |

REPOSITORIES: ENA

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Novel cancer gene discovery using a forward genetic screen in RCAS-PDGFB driven gliomas

Project description:Here we describe the use of a high-throughput pipeline coupled to the commonly used tissue-specific retroviral RCAS-TVA mouse tumor model system. Utilizing next generation sequencing, we show that retroviral integration sites can be reproducibly detected in malignant stem cell lines generated from RCAS-PDGFB-driven glioma biopsies.

2022-07-05 | GSE207264 | GEO

Genome-wide maps in PDGFB-induced glioma

Project description:We performed genome-wide profiling of oligodendrocyte lineage transcription factor 2 (Olig2) and other histone markers in platelet-derived growth factor subunit B (PDGFB)-induced glioma and genome-occupancy analyses coupled with transcriptome profiling to reveal gene regulatory network. Examination of Olig2, H327Ac, and H3K4me3 genome-wide occupancy in PDGFB-induced Ctrl-T and Olig2cKO brain tumors (gliomas).

2016-05-17 | E-GEOD-80088 | biostudies-arrayexpress

Expression data from RCAS PDGFB/Nestin tv-A glioma cells within Ptprd+/+p16-/- (n=2), Ptprd+/-p16-/- (n=2), and Ptrpd-/-p16-/- (n=3) mice.

Project description:PTPRD is a tumor suppressor of glioma that is frequently co-deleted with CDKN2A/p16. We show that Ptprd and p16 cooperate to promote gliomagenesis in the RCAS PDGFB / Nestin tv-A glioma mouse model. We found unique gene expression changes within tumor cells of Ptprd+/-p16-/- vs. Ptprd+/+p16-/- and Ptprd-/-p16-/- tumor cells. Neonatal mice were injected with RCAS PDGFB GFP. At symptoms, or at 12 weeks post injection, GFP+DAPI- tumor cells were sorted for RNA extraction and hybridization on Affymetrix microarrays. The mouse strain used was a mixed background of C57/BL6 and FVB/N. Ptprd mice were from Uetani et al. 2000 and p16/Nestin-tvA mice were from Tchouganouva et al. 2007.

2014-06-02 | E-GEOD-55061 | biostudies-arrayexpress

RNAseq analysis of murine brainstem gliomas with and without H3.3K27M

Project description:Using the RCAS/tv-a system, we induced murine brainstem gliomas (PDGF-B; p53 loss using RCAS-Cre with and without H3.3K27M) in Nestin tv-a; p53 floxed mice

2017-05-11 | GSE98765 | GEO

A forward genetic screen for regulators of muscle morphogenesis in Drosophila

Project description:We performed a forward genetic screen and used RNAseq to identify potential variants in 6 independent strains. This approach successfully identified causative variants.

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A forward genetics screen identifies modifiers of Rocaglate responsiveness

Project description:A forward genetics screen identifies modifiers of Rocaglate responsiveness

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Expression data from RCAS PDGFB/Nestin tv-A glioma cells within Ptprd+/+p16-/- (n=2), Ptprd+/-p16-/- (n=2), and Ptrpd-/-p16-/- (n=3) mice.

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A forward genetic screen for regulators of muscle morphogenesis in Drosophila

Project description:A forward genetic screen for regulators of muscle morphogenesis in Drosophila

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Single cell RNAseq of murine gliomas induced by PDGFB overexpression

Project description:Glioblastoma progression remains elusive, especially in its first stages. Here, by simultaneous transfer of PDGFB and genetic barcode in mouse brain, we triggered gliomagenesis in univocally labelled cells in vivo, hence enabling direct tracing of glioblastoma evolution from the earliest possible stage. We observed an unexpectedly high incidence of clonal extinction events and progressive clonal size divergence, even after the acquisition of a malignant phenotype. Computational modelling suggests these dynamics as the consequence of a clonal-based cell-cell competition. Bulk and single-cell transcriptome analyses, coupled to lineage tracing, revealed that the strongest correlation with clonal size unbalancing is shown by Myc transcriptional targets. Additionally, higher levels of Myc signalling discriminate "winner" from "loser" clones in early gliomagenesis. These results agree with recent understanding of the Myc-mediated induction of supercompetitive phenotype in mammalian embryo. Our findings shed light on aspects of glioblastoma evolution inaccessible by conventional retrospective approaches and highlight the potential of the combined use of clonal tracing and transcriptomic analyses in this field.

2023-07-18 | GSE189577 | GEO

Bulk RNAseq of murine gliomas driven by overexpression of PDGFB

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