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Full-coverage landscape of extracellular RNAs, coding and non-coding, secreted by human glioma stem cells

ABSTRACT: Full-coverage landscape of extracellular RNAs, coding and non-coding, secreted by human glioma stem cells

OTHER RELATED OMICS DATASETS IN: GSE93143

PROVIDER: PRJNA360129 | ENA |

REPOSITORIES: ENA

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Full-coverage landscape of extracellular RNAs, coding and non-coding, secreted by human glioma stem cells

Project description:Communication between glioblastoma brain tumor (GBM) and its microenvironment alters the parameters of tumor growth and host responses, and may be mediated in part by tumor-secreted RNA. The global repertoire of extracellular RNAs (exRNAs) released by GBM, however, has not been investigated. We have developed a protocol enabling quantitative, minimally biased analysis of vesicular and non-vesicular exRNA complexes, including microvesicles (MVs) and exosomes (collectively called extracelluar vesicles; EVs), as well as ribonucleoproteins (RNPs) and applied it to study exRNA in patient-derived glioma stem-like cultures (GSC). Despite the intertumoral heterogeneity, further exacerbated at the exRNA level, the extracellular complexes exhibit distinct RNA composition, with microvesicles most closely reflecting the cellular transcriptome, and exRNPs exhibiting the most discrete repertoire. Up to 90% of exRNA reads represent fragmented rRNA; the remaining content is enriched in small ncRNA species, such as miRNAs in exosomes, and precisely processed tRNA and Y RNA fragments in both EVs and exRNPs. EV-enclosed mRNAs are mostly fragmented, and UTRs are more abundant than ORF regions; nevertheless, some full-length transcripts are present. Overall, there is less than one copy of non-rRNA per EV. Our results suggest that massive EV/exRNA uptake would be required to ensure functional impact of transferred information to the normal recipient cells of the brain and predict the most impactful miRNAs in such conditions. This study also provides a catalog of diverse vesicular and non-vesicular exRNA species useful for biomarker discovery.

2018-01-04 | GSE93143 | GEO

Neuronal activity promotes glioma growth

Project description:Secreted molecules from active neurons promote glioma growth

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Scalable full-transcript coverage single cell RNA sequencing of PBMCs using Smart-seq3xpress

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Neural Precursor Cell-Derived Pleiotrophin Mediates Glioma Invasion of the Subventricular Zone

Project description:The lateral ventricle subventricular zone (SVZ) is a frequent and consequential site of pediatric and adult glioma spread, but the cellular and molecular mechanisms mediating this are poorly understood. We demonstrate that neural precursor cell (NPC):glioma cell communication underpins this propensity of glioma to colonize the SVZ through secretion of chemoattractant signals toward which glioma cells home. Biochemical, proteomic, and functional analyses of SVZ NPC-secreted factors revealed the neurite outgrowth-promoting factor pleiotrophin, along with required binding partners SPARC/SPARCL1 and HSP90B, as key mediators of this chemoattractant effect. Pleiotrophin expression is strongly enriched in the SVZ, and pleiotrophin knockdown starkly reduced glioma invasion of the SVZ in the murine brain. Pleiotrophin, in complex with the binding partners and signaling through the receptor PTPRZ1, activated glioma Rho/ROCK signaling, and ROCK inhibition decreased invasion toward SVZ NPC-secreted factors. These findings demonstrate a pathogenic role for NPC:glioma interactions and potential therapeutic targets to limit glioma invasion.

2017-07-26 | GSE99812 | GEO

miRNA data from extracellular vesicles secreted by Nippostrongylus brasiliensis

Project description:miRNA-Seq analysis of the miRNA present in the extracellular vesicles secreted by the nematode Nippostrongylus brasiliensis

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mRNA data from extracellular vesicles secreted by Trichuris muris

Project description:RNA-Seq analysis of the mRNA present in the extracellular vesicles secreted by the nematode Trichuris muris

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miRNA data from extracellular vesicles secreted by Trichuris muris

Project description:miRNA-Seq analysis of the miRNA present in the extracellular vesicles secreted by the nematode Trichuris muris

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Transcriptome of full-length cDNAs from human glioma stem cells

Project description:These data correspond to one SMRT cell sequencing run (performed on Sequel II, PacBio) of full length cDNAs from 3 pooled glioma stem cell line libraries. No tag was added to distinguish the 3 different samples

2022-04-21 | GSE190930 | GEO

1000 Genomes Full Production low coverage WGS population sequencing

Project description:1000 Genomes Full Production low coverage WGS population sequencing

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Glioma proteome organization under oncolytic adenoviral infection

Project description:Glioblastoma multiforme (GBM) is the most common and aggressive type of malignant glioma. Oncolytic adenoviruses are being modified to exploit the aberrant expression of proteins in tumor cells to enhance tumor tropism and glioma-selective replication. E1A mutant adenovirus Delta-24-RGD has shown favorable toxicity profile and remarkable efficacy in a first-in-human phase I clinical trial. However, the comprehensive modulation of glioma metabolism in response to Delta-24-RGD infection is poorly understood. Integrating mass spectrometry based-quantitative proteomics, physical and functional interaction data, and biochemical approaches, we conducted a cell-wide study of cytosolic, nuclear, and secreted glioma proteomes throughout the early time course of Delta-24-RGD infection.

2018-10-22 | PXD008022 | Pride

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