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SnoRNA sequencing of sEV isolated from plasma of astronauts

ABSTRACT: snoRNA sequencing of sEV isolated from plasma of astronauts

PROVIDER: PRJNA822839 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR18590604.fastq.gz	Fastqsanger.gz
	SRR18590605.fastq.gz	Fastqsanger.gz
	SRR18590606.fastq.gz	Fastqsanger.gz
	SRR18590607.fastq.gz	Fastqsanger.gz
	SRR18590608.fastq.gz	Fastqsanger.gz

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snoRNA sequencing of sEV isolated from plasma of astronauts

Project description:This study aimed to determine whether the spaceflight-induced snoRNA changes in plasma extracellular vesicles (EV) and astronauts' peripheral blood mononuclear cells (PBMCs) can be utilized as potential biomarkers. Using unbiased small RNA sequencing, we evaluated the EV snoRNA changes in peripheral blood (PB) plasma of astronauts (n=5/group) who underwent median 12-day long Shuttle missions between 1998-2001. Using stringent cutoff (> log 2-fold change, FDR < 0.05), we detected 21 down-regulated snoRNAs and 9 upregulated in PB-EVs at three days after return (R+3) compared to ten days before launch (L-10). Our findings unveiled that spaceflight induced changes in EV and PBMCs snoRNA expression, thus suggesting snoRNAs may serve as novel biomarkers for monitoring astronauts' health.

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small-RNA sequencing of sEV isolated from plasma of astronauts

Project description:We sought to determine whether the spaceflight environment can induce alterations in small extracellular vesicles (sEV) smallRNA content and their utility as biomarkers. Using small RNA sequencing (sRNAseq), we evaluated the impact of the spaceflight environment on sEV miRNA content in peripheral blood (PB) plasma of 14 astronauts, who flew STS missions between 1998-2001. Samples were collected at three-time points:10 days before the launch (L-10), the day of return (R-0), and three days post-landing (R+3).

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small-RNA sequencing of sEV isolated from plasma of astronauts

Project description:small-RNA sequencing of sEV isolated from plasma of astronauts

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The changes of miRNAs in plasma small extracellular vesicles (sEV) isolated from 8-week diabetic rats compared with control animals

Project description:Compared with plasma sEV (Con-sEV) from control rats, plasma sEV (DM-sEV) from 8-week diabetic rats significantly induced cardiomyocyte apoptosis as evidenced by increased percentage of apoptotic cells and activity of pro-apoptotic protein caspase 3. The proapoptotic effect of DM-sEV was blunted by RNase but not proteinase K, suggesting that DM-sEV exerted the cardiotoxic effects mainly through their contained RNAs. Increasing evidence suggests that miRNAs are the most important molecules by which sEV regulate recipient cell function. To identify the sEV-containing specific miRNAs responsible for the effects, Con-sEV and DM-sEV were subjected to miRNA sequencing.

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Project description:There are unique stressors in the spaceflight environment. Exposure to such stressors is associated with adverse effects on astronauts' health, including increased cancer and cardiovascular disease risks. Small extracellular vesicles (sEVs, i.e., exosomes) play a vital role in intercellular communication and regulate various biological processes contributing to their role in disease pathogenesis. To assess whether spaceflight alters sEVs transcriptome profile, sEVs were isolated from the blood plasma of 3 astronauts at two different time points: 10 days before launch (L-10) and 3 days after return (R+3) from the Shuttle mission. Human adult ventricular cardiomyocyte cells (AC16) were treated with L-10 and R+3 astronauts-derived exosomes for 24 hours. Total RNA was isolated and analyzed for gene expression profiling using Affymetrix microarrays. Enrichment analysis was performed using Enrichr. Transcription factor enrichment analysis using the ENCODE/ChEA Consensus TF database identified gene sets related to the polycomb repressive complex 2 (PRC2) and Vitamin D receptor (VDR) in AC16 cells treated with R+3 compared to cells treated with L-10 astronauts-derived exosomes. Further analysis of the histone modifications using datasets from the Roadmap Epigenomics Project confirmed enrichment in gene sets related to the H3K27me3 repressive mark. Interestingly, analysis of previously published H3K27me3–chromatin immunoprecipitation sequencing (ChIP-Seq) ENCODE datasets showed enrichment of H3K27me3 in the VDR promoter. Collectively, our results suggest that astronaut-derived sEVs may epigenetically repress the expression of the VDR in human adult cardiomyocytes c by promoting the activation of the PRC2 complex and H3K27me3 levels.

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Astronauts plasma-derived exosomes induced gene expression in AC16 cells

Project description:Astronauts plasma-derived exosomes induced gene expression in AC16 cells

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Plasma Cell Type Isolated EVs

Project description:Plasma Cell Type Isolated EVs

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The changes of miRNAs in plasma small extracellular vesicles (sEV) isolated from 8-week diabetic rats compared with control animals

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Project description:The Sevenless receptor (Sev) is a key component of the complex regulatory network involved in R7 photoreceptor determination. However the genetic program that responds to Sev is still unknown. Here, we explore the transcriptional profile downstream of Sev, using eye imaginal discs from third instar larvae of the sev mutants sevS11 and sevd2 compared with wild-type controls. Keywords: loss and gain of function analysis

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