Project description:In this study, we found that the highly expressed miRNAs appear in EPDELNs (Edible plant-derived exosome-like nanoparticles) have the potential to regulate human mRNA in a cross-kingdom manner. Target prediction and functional analysis revealed that highly expressed miRNAs were closely associated with inflammatory responses and cancer-related pathways. Therefore, we hypothesized that miRNAs in EPDELNs may be a crucial factor behind the regulatory function of EPDELNs.

2018-06-25 | GSE116095 | GEO

The nuclear RNA exosome is co-opted to enhance host:viral RNA hybrids that propel influenza virus ribogenesis and infectivity

Project description:The nuclear RNA exosome is an essential multi-subunit complex that controls RNA homeostasis. Congenital mutations in exosome genes are associated with neurodegenerative diseases. Here, we show that transient depletion of nuclear RNA exosome subunits in epithelial cells inhibits influenza virus replication. Similarly, viral biogenesis was suppressed in cells derived from mice with conditional ablation of the RNA exosome subunit Exosc3. Furthermore, patient-derived cells with a congenital EXOSC3 mutation were less susceptible to influenza virus infection. Using proteomics and next generation sequencing during infection, we show that the viral polymerase complex (PA, PB2, PB1) co-opts the nuclear RNA exosome complex and cellular RNAs en route to 3’ end degradation. Mechanistically, the nuclear RNA exosome coordinates the initial steps of viral transcription with RNAPII at host promoters. Exosome deficiency uncouples chromatin targeting of the viral polymerase complex and the formation of cellular:viral RNA hybrids, which are essential RNA intermediates that license transcription of antisense genomic viral RNAs. Overall, we discovered a critical nexus between an essential component of the influenza virus (polymerase) and an essential component of the cell (exosome), alteration of which leads to breakage of host-pathogen symmetry and a lose-lose scenario (viral impairment and neurodegeneration).

2017-05-08 | GSE96677 | GEO

Nuclear exosome

Project description:Nuclear exosome

| PRJNA304634 | ENA

Transcriptome analysis of the scleroderma skin tissue treated with BMSC derived exosome in mouse

Project description:We aim to explore the transcriptome of the dermis of the bleomycin induced murine scleroderma model which were treated with PBS or bone marrow stem cell derived exosome.

2021-06-15 | GSE165117 | GEO

Tumor exosome integrins determine organotropic metastasis

Project description:Stephen Paget first proposed, in 1889, that organ distribution of metastases is a non-random event, yet metastatic organotropism remains one of the greatest mysteries in cancer biology. Here, we demonstrate that exosomes released by lung-, liver- and brain-tropic tumor cells fuse preferentially with resident cells at their predicted destination, such as fibroblasts and epithelial cells in the lung, Kupffer cells in the liver, and endothelial cells in the brain. We found that exosome homing to organ-specific cell types prepares the pre-metastatic niche and that treatment with exosomes derived from lung tropic models can redirect metastasis to the lung. Proteomic profiling of exosomes revealed distinct integrin expression patterns associated with each organ-specific metastasis. Whereas exosomal integrins α6β4 and α6β1 were associated with lung metastasis, exosomal integrins αvβ5 and αvβ3 were linked with liver and brain metastases, respectively. Targeting α6β4 and αvβ5 integrins decreased exosome uptake and metastasis in the lung and liver, respectively. Importantly, we demonstrate that exosome uptake activates a cell-specific subset of S100 family genes, known to support cell migration and niche formation. Finally, our clinical data indicate that integrin-expression profiles in circulating plasma exosomes from cancer patients could be used to predict organ-specific metastasis. Education of human von Kupffer cells in vitro with human pancreatic cancer exosomes

2015-06-17 | E-GEOD-68919 | biostudies-arrayexpress

Human placenta-derived mesenchymal stem cells ameliorate diabetic nephropathy

Project description:Human placenta-derived mesenchymal stem cells ameliorate diabetic nephropathy

| PRJNA641792 | ENA