MiRNA expression in the extracellular vescle (EV) fraction
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE212033 | GEO | 2023/12/20
REPOSITORIES: GEO
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Project description:We report the high-throughput profiling of small RNA in extracellular vesicles (EVs) and their producing mammalian cells using Illumina small RNA sequencing platform. By obtaining over 2190 miRNA expression from 18 samples, the miRNA profile in EVs and their producing cells were compared. Results provide insight into gene profile difference between EV loading and the producing cells.
2017-05-31 | GSE99430 | GEO
Project description:Much recent work has been dedicated to exploring the utility of extracellular vesicles (EVs) as circulating cancer biomarkers. This is driven by the understanding that the molecular cargo of EVs reflects their originating cell, meaning EVs may enable non-invasive tumour surveillance. Few attempts have been made, however, to empirically validate this assumption on the -omic level and define the relationship between the molecular phenotype of cells and EVs. To this end, we present an integrative multi-omic analysis of a panel of breast cancer cell lines and corresponding EVs. Transcriptomic analysis of the cells was first used to confirm that expression of disease-related transcripts remained stable following transition to a low serum EV production medium. Proteomic analysis of the EVs indicated that neither the ER nor PR protein could be directly detected in EVs, but cellular expression of ER could be indirectly inferred from the EV proteome. Transcriptomic analyses generally suggested a direct positive correlation between transcript levels in cells and EVs. Integrative analysis suggested that the EV proteome and transcriptome captured select hallmarks of aberrant pathway activity in the originating cells, supporting the potential use of EVs to non-invasively monitor molecular evolution in breast cancers.
2023-11-03 | GSE188385 | GEO
Project description:Cilia are conserved EV shedding organelles that release ciliary EVs for transmitting
13 signals. However, the content of ciliary EVs produced by living animals has not been explored.
14 Here we used evolutionarily conserved PKD-2::GFP EV cargo of Caenorhabditis elegans as a
15 marker of ciliary EVs to identify animal EV proteome. Top candidates were experimentally
16 confirmed using fluorescent reporter tracking and live animal imaging. Our findings indicate that
17 cilia produce multiple EVs with distinct protein content and that EVs from different neuronal
18 types carry different EV cargo. We discover that ciliary EVs carry nucleic acid binding proteins,
19 implying the role of cilia in epigenetic regulation and transfer of genetic information in trans.
20 Our dataset also contains non-ciliary EV cargo candidates from other tissues, such as cuticle,
21 somatic gonad, and germline, that can be explored using our MyEVome Web App.
2021-08-04 | MSV000087943 | MassIVE
Project description:COPD is a heterogeneous condition without effective disease modifying therapies. Identification of novel inflammatory endotype markers such as extracellular vesicles (EVs), which are important intercellular messengers carrying microRNA (miRNA), may enable earlier diagnosis and disease stratification for a targeted treatment approach. Our aim was to identify differentially expressed EV miRNA in the lungs of COPD patients compared with healthy ex-smokers and determine whether they can help define inflammatory COPD endotypes. EV miRNA were isolated and sequenced from ex-smoking COPD patients and healthy ex-smoker bronchoalveolar lavage fluid. Results were validated with RT-qPCR and compared to differential inflammatory cell counts. Differential expression analysis identified five upregulated miRNA in COPD (miR-223-3p, miR-2110, miR-182-5p, miR-200b-5p and miR-625-3p) and three downregulated miRNA (miR-138-5p, miR-338-3p and miR-204-5p), all with a log2 fold change of >1/-1, FDR<0.05. These miRNAs correlated with disease defining characteristics such as FEF 25-75% (a small airways disease measure) and DLCO % (a surrogate measure of emphysema). Receiver operator curve analysis demonstrated miR-2110, miR-223-3p and miR-182-5p showed excellent combinatory predictive ability (AUC 0.91, p<0.0001) in differentiating between health and mild COPD. Furthermore, miR-223-3p and miR-338-3p correlated with airway eosinophilia and were able to distinguish “pure eosinophilic” COPD from other airway inflammatory subtypes (AUC 0.94 and 0.85 respectively). This is the first study to identify differentially expressed miRNA in COPD bronchoalveolar lavage fluid EVs. These findings suggest specific lung derived EV miRNA are a strong predictor of disease presence even in mild COPD. Furthermore, specific miRNA correlated with inflammatory cell numbers in COPD, and may have a role in defining inflammatory endotypes for future treatment stratification.
2022-12-05 | GSE218571 | GEO
Project description:Extracellular Vesicles (EV) are an attractive therapy to boost cardiac regeneration. Nevertheless, identification of EV and corresponding cell platform(s) suitable for therapeutic application, is still a challenge. Here, we isolated EV from key stages of the human induced pluripotent stem cell-cardiomyocyte (hiPSC-CM) differentiation and maturation, i.e., from hiPSC (hiPSC-EV), cardiac progenitors (CPC-EV), immature (CMi-EV) and mature (CMm-EV) cardiomyocytes, with the aim of identifying a promising cell biofactory for EV production, and pinpoint the genetic signatures of bioactive EV. EV were characterized in terms of expression of specific markers, yield, and size. Bioactivity was assessed in human umbilical vein endothelial cells (HUVEC) and hiPSC-CM. Small RNA-Seq was performed to identify the differentially expressed miRNA in the four EV groups. Bioactivity assays showed increased tube formation and migration in HUVEC treated with hiPSC-EV compared to EV from committed cell populations. hiPSC-EV also significantly increased hiPSC-CM proliferation. Global miRNA expression profiles corroborated an EV-miRNA pattern indicative of stem cell to cardiomyocyte specification. A stemness maintenance miRNA cluster upregulated in hiPSC-EV was found to target the PTEN/PI3K/AKT pathway. Moreover, hiPSC-EV treatment mediated PTEN suppression and increased AKT phosphorylation. Overall, our findings validate hiPSC as suitable cell biofactories for EV production for cardiac regenerative applications.
2022-06-01 | GSE179323 | GEO
Project description:To detect gene expression changes in skeletal muscle caused by EVs from mMCF-10A/miR-122 cells, we analyzed RNA isolated from the GA muscle of EV-treated female NOD scid gamma (NSG) mice. Mice had received tail-vein injections of EVs twice a week for 5 weeks (~10 ug EV per injection). Gene expression in muscle from mice treated with MCF-10A/miR-122-derived EVs.
2022-01-01 | GSE164303 | GEO
Project description:Osteolineage cells represent one of the critical bone marrow niche components that support maintenance of hematopoietic stem and progenitor cells (HSPCs). Recent studies demonstrate that extracellular vesicles (EVs) regulate stem cell development via horizontal transfer of bioactive cargo, including microRNAs (miRNAs). Here, we characterize the miRNA profile of EVs secreted by human osteoblasts and study their biological effect of on human umbilical cord blood-derived CD34+ HSPCs by sequencing, gene expression and biochemical analyses. Using next-generation sequencing we show that osteoblast-derived EVs contain highly abundant miRNAs specifically enriched in EVs, including critical regulators of hematopoietic proliferation (e.g., miR-29a). EV treatment of CD34+ HSPCs alters the expression of candidate miRNA targets, such as HBP1, BCL2 and PTEN. Furthermore, EVs enhance proliferation of CD34+ cells and their immature subsets in growth factor-driven ex vivo expansion cultures. Importantly, EV-expanded cells retain their differentiation capacity in vitro and show successful engraftment in NOD.Cg-Prkdcscid Il2rgtm1Wjl/SzJ (NSG) mice in vivo. These discoveries reveal a novel osteoblast-derived EV-mediated mechanism for regulation of HSPC proliferation and warrant consideration of EV-miRNAs for the development of expansion strategies to treat hematological disorders.
2016-10-05 | E-MTAB-4560 | biostudies-arrayexpress
Project description:EVs were isolated from primary human aortic endothelial cells (ECs) (+/- IL-1b activation), quantified, and analysed by miRNA transcriptomics and proteomics. Compared to quiescent ECs, activated ECs increased EV release, with miRNA and protein cargo that were related to atherosclerosis pathways. RNA sequencing of EV-treated monocytes and vascular smooth muscle cells (VSMCs) revealed that EVs from activated ECs altered pathways that were pro-inflammatory and atherogenic.
2024-01-02 | GSE231715 | GEO
Project description:Phenotypic changes induced by extracellular vesicles (EVs) have been implicated in the recovery of acute kidney injury (AKI) induced by mesenchymal stromal cells (MSCs). miRNAs are potential candidates for cell reprogramming towards a pro-regenerative phenotype. The aim of the present study was to evaluate whether miRNA de-regulation inhibits the regenerative potential of MSCs and derived-EVs in a model of glycerol-induced AKI in SCID mice. For this purpose, we generated MSCs depleted of Drosha, a critical enzyme of miRNA maturation, to alter miRNA expression within MSCs and EVs. Drosha knock-down MSCs (MSC-Dsh) maintained the phenotype and differentiation capacity. They produced EVs that did not differ from those of wild type cells in quantity, surface molecule expression and internalization within renal tubular epithelial cells. However, EVs derived from MSC-Dsh (EV-Dsh) showed global down-regulation of miRNAs. Whereas, wild type MSCs and derived EVs were able to induce morphological and functional recovery in AKI, MSC-Dsh and EV-Dsh were ineffective. RNA sequencing analysis showed that genes deregulated in the kidney of AKI mice were restored by treatment with MSCs and EVs but not by MSC-Dsh and EV-Dsh. Gene Ontology analysis showed that down-regulated genes in AKI were associated with fatty acid metabolism. The up-regulated genes in AKI were involved in inflammation, ECM-receptor interaction and cell adhesion molecules. These alterations were reverted by treatment with wild type MSCs and EVs, but not by the Drosha counterparts. In conclusion, miRNA depletion in MSCs and EVs significantly reduced their intrinsic regenerative potential in AKI, suggesting a critical role of miRNAs. RNA-seq
2015-05-07 | E-GEOD-59958 | biostudies-arrayexpress