Ontology highlight
ABSTRACT:
PROVIDER: PRJNA561210 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR10007636_1.fastq.gz | Fastqsanger.gz | |||
| SRR10007636_2.fastq.gz | Fastqsanger.gz | |||
| SRR10007637_1.fastq.gz | Fastqsanger.gz | |||
| SRR10007637_2.fastq.gz | Fastqsanger.gz | |||
| SRR10007638_1.fastq.gz | Fastqsanger.gz |
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Project description:This quantitative protepomics study (TMT10 isobaric labeling) of the protein expression in the retina of Msi1/Msi2 double knockout mouse compared to floxed controls. The Msi1 and Msi2 genes were knocked out in photoreceptor cells using tamoxifen inducible Cre (Cre-ERT2) under the control of Pde6g promoter. Tamoxifen was administered by intrapertoneal injection for three consecutive day starting at postnatald day 30, and the retina was collected at postnatal day 51. Retinas from floxed animals lacking the Cre recombinase and treated with tamoxifen were used as controls. Five biological replicates for each knockout (three femailes, two males) and control (two femaes and three males) group were used.
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Project description:mRNA-seq and ribosome profiling of neural stem cells overexpressing or knocked out for Musashi RNA-binding proteins Study of the global effects of Musashi (Msi) proteins on the transcriptome of embryonic neural stem cells. Neural stem cells were derived from brains of E12.5 or E13.5 embryos engineered to have inducible Msi1 or Msi2 genes, or from embryos with double floxed alleles of Msi1 and Msi2 carrying a Tamoxifen-induclble Cre (CreER). The overexpression mice were made using the Flp-in system (OpenBioSystems), where a cDNA of interest (in this case Msi1 or Msi2) is knocked into the Collagen (Col1A1) locus. The expression of the cDNA of interest is driven by m2rTTA that is knocked into the Rosa26 locus (R26). KH2 describes a strain containing the R26-m2rTTA but lacking Msi1 or Msi2 cDNA. MSI1 describes a strain containing R26-m2rTTA and Msi1 cDNA in Col1A1. MSI2 describes a strain containing R26-m2rTTA and Msi2 cDNA in Col1A1. C1 describes a strain lacking the CreER allele but containing double floxed alleles of Msi1/Msi2 (used as Tamoxifen control). C4 describes a strain carrying the CreER allele and double floxed alleles of Msi1/Msi2.
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Project description:Members of the Msi family of RNA-binding proteins have recently emerged as potent oncoproteins in a range of malignancies. MSI2 is highly expressed in hematopoietic cancers, where it is required for disease maintenance. In contrast to the hematopoietic system, colorectal cancers can express both Msi family members, MSI1 and MSI2. Here, we demonstrate that, in the intestinal epithelium, Msi1 and Msi2 have analogous oncogenic effects. Further, comparison of Msi1/2-induced gene expression programs and transcriptome-wide analyses of Msi1/2-RNA-binding targets reveal significant functional overlap, including induction of the PDK-Akt-mTORC1 axis. Ultimately, we demonstrate that concomitant loss of function of both MSI family members is sufficient to abrogate the growth of human colorectal cancer cells, and Msi gene deletion inhibits tumorigenesis in several mouse models of intestinal cancer. Our findings demonstrate that MSI1 and MSI2 act as functionally redundant oncoproteins required for the ontogeny of intestinal cancers.
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Project description:Otx2 has been shown to be non cell autonomously required for photoreceptor cell survival in the adult mouse RPE. This study aims to identify Otx2 DNA binding profile in both RPE and neural retina to i) identify direct targets of Otx2 in the RPE ii) compare Otx2 binding profile in neural retina and RPE to unveil hidden functions in the neural retina. WT and GFP antibodies were used to perform two independent ChIP-seq experiments using Illumina GAIIx.
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Project description:Otx2 has been shown to be non cell autonomously required for photoreceptor cell survival in the adult mouse RPE. This study aims to identify Otx2 DNA binding profile in both RPE and neural retina to i) identify direct targets of Otx2 in the RPE ii) compare Otx2 binding profile in neural retina and RPE to unveil hidden functions in the neural retina.
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Project description:The MSI2 RNA binding protein has recently emerged as a potent oncogene playing key roles in hematopoietic stem cell homeostasis and malignant hematopoiesis. Here we demonstrate that MSI2 is expressed in the intestinal stem cell compartment, that its expression is elevated in colorectal adenocarcinomas, and that MSI2 loss of function abrogates colorectal cancer cell growth. We thus examined the oncogenic consequences of MSI2 gain of function in the intestinal epithelium with a drug inducible mouse model. Strikingly, MSI2 induction alone was sufficient to phenocopy the majority of morphological and molecular consequences of acute loss of the APC tumor suppressor in the intestinal epithelium. We demonstrate that this phenotype is independent of both the activation of the other oncogenic Musashi family member, Msi1, and of canonical Wnt pathway activation. Transcriptome-wide RNA-binding analysis indicates that MSI2 acts as a pleiotropic inhibitor of known intestinal tumor suppressors including Lrig1, Bmpr1a, Cdkn1a, and Pten. Finally, we demonstrate that inhibition of the PDK-AKT-mTORC1 axis downstream of Pten rescues oncogenic consequences of MSI2 induction. Taken together, our findings identify MSI2 as a central component in an unappreciated oncogenic pathway promoting intestinal transformation. 2 wild-type samples, 2 TRE-Msi2 samples
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