Ontology highlight
ABSTRACT:
PROVIDER: PRJNA783450 | ENA |
REPOSITORIES: ENA
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Project description:Exosomes have recently been shown to play a key role in cell-to-cell communication through delivery of various functional content, including microRNAs (miRNAs). We investigated the potential roles of exosomal miRNA derived intrafollicular cells in polycystic ovary syndrome (PCOS). Using microarray profiling, a total of 492 miRNAs and 220 miRNAs were found in follicular fluid-derived exosomes and serum-derived exosomes, respectively, in PCOS and non-PCOS females. By excluding miRNAs existing in serum-derived exosomes, we found 179 miRNAs which were specifically expressed in follicular fluid-derived exosomes both in PCOS and non-PCOS females. Using microarray profiling, a total of 492 miRNAs and 220 miRNAs were found in follicular fluid-derived exosomes and serum-derived exosomes, respectively, in PCOS and non-PCOS females. By excluding miRNAs existing in serum-derived exosomes, we found 179 miRNAs which were specifically expressed in follicular fluid-derived exosomes both in PCOS and non-PCOS females.
2022-02-01 | GSE145318 | GEO
Project description:Small extracellular vesicles (sEV) are nano-sized (40-150 nm), membrane-encapsulated vesicles that are released by malignant or pathologic and non-pathologic cells into the extracellular space and function as intercellular signaling vectors through the horizontal transfer of biologic molecules, including microRNA (miRNA) and other small non-coding RNA (ncRNA), that can alter the phenotype of recipient cells. sEV are present in essentially all extracellular biofluids, including serum, urine and saliva, and offer a new avenue for discovery and development of novel biomarkers of various disease states and exposures. The objective of this study was to determine the similarities and differences between sEV ncRNA derived from saliva, serum and urine, as well as cell-free ncRNA from serum. Saliva, urine and serum were concomitantly collected from 4 healthy donors, and sEV were isolated from each respective biofluid, along with cfRNA from serum. sEVs were isolated from the respective biofluids via differential ultracentrifugation. Small RNA-sequencing was performed on each sample, and cluster analysis was performed based on ncRNA profiles. While some similarities existed in terms of sEV ncRNA cargo across biofluids, there are also notable differences in ncRNA class and ncRNA secretion, with each sEVs in each biofluid bearing a unique ncRNA profile. We conclude that sEV ncRNA cargo varies according to biofluid, so thus should be carefully selected and interpreted when designing translational or epidemiological studies.
2020-02-25 | GSE122621 | GEO
Project description:We characterized the extracellular miRNAs, isolated from serum-derived extracellular vesicles (EV), induced by vaccination against Ebola. We identified early miRNA signatures associated with the ZEBOV-specific IgG antibody responses at day 28 or 360 post-vaccination.
2023-12-18 | GSE242207 | GEO
Project description:Amyotrophic lateral sclerosis (ALS) is a terminal neurodegenerative disease. Clinical and molecular observations suggest that ALS pathology originates at a single site and spreads in an organized and prion-like manner, possibly driven by extracellular vesicles. Extracellular vesicles transfer cargo molecules associated with ALS pathogenesis, such as misfolded and aggregated proteins and dysregulated microRNAs (miRNAs). However, it is poorly understood whether altered levels of circulating extracellular vesicles or their cargo components reflect pathological signatures of the disease. In this study, we used immuno-affinity-based microfluidic technology, electron microscopy, and NanoString miRNA profiling to isolate and characterize extracellular vesicles and their miRNA cargo from frontal cortex, spinal cord, and serum of sporadic ALS (n=15) and healthy control (n=16) participants. We found larger extracellular vesicles in ALS spinal cord versus controls and smaller sized vesicles in ALS serum. However, there were no changes in the number of extracellular vesicles between cases and controls across any tissues. Characterization of extracellular vesicle-derived miRNA cargo in ALS compared to controls identified significantly altered miRNA levels in all tissues; miRNAs were reduced in ALS frontal cortex and spinal cord and increased in serum. Two miRNAs were dysregulated in all three tissues: miR-342-3p was increased in ALS, and miR-1254 was reduced in ALS. Additional miRNAs overlapping across two tissues included miR-587, miR-298, miR-4443, and miR-450a-2-3p. Predicted targets and pathways associated with the dysregulated miRNAs across the ALS tissues were associated with common biological pathways altered in neurodegeneration, including axon guidance and long-term potentiation. A predicted target of one identified miRNA (N-deacetylase and N-sulfotransferase 4; NDST4) was likewise dysregulated in an in vitro model of ALS, verifying potential biological relevance. Together, these findings demonstrate that circulating extracellular vesicle miRNA cargo mirror those of the central nervous system disease state in ALS, and thereby offer insight into possible pathogenic factors and diagnostic opportunities.
2021-10-10 | GSE179819 | GEO
Project description:To investigate changes in serum extracellular vesicle miRNAs during adipose tissue regeneration, we created tamoxifen-inducible adipocyte-specific insulin receptor knockout (iFIRKO) mice. We then performed comprehensive miRNA analysis on the serum extracellular vesicles of iFIRKO and control mice.
2023-04-18 | GSE227967 | GEO
Project description:Compared to whole serum miRNAs, miRNAs in serum small extracellular vesicles (sEVs) are well protected form RNA enzymes, thus provide a consistent source of miRNA for disease biomarker detection. Serum sEVs and their miRNA cargos released by injured liver cells could be promising biomarkers for diagnosis of liver diseases. We were very interested to find out the effects of liver injury on serum extracellular vesicles as well as the small RNA components they transported, if there is any difference between acute and chronic injury. Study in this regard will help us to identify new serum biomarkers for liver injury, and to find out if there are specific markers for acute or chronic liver injury. To identify potential biomarker for liver injury based on serum sEVs miRNAs, we established the carbon tetrachloride (CCL4) induced acute and chronic liver injury mice model, and examined the dynamic changes of small RNA components, especially miRNAs, in serum sEVs.
2021-08-07 | E-MTAB-9462 | biostudies-arrayexpress
Project description:microRNAs in serum extracellular vesicles in flu-infected mice
| PRJDB5798 | ENA