Differential expression profiles of plasma tsRNAs in children with fulminant myocarditis
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ABSTRACT:
PROVIDER: PRJNA688297 | ENA |
REPOSITORIES: ENA
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Project description:We report the application of high-throughput RNA sequencing technology to examine expression profiling of plasma transfer RNA (tRNA)-derived small RNAs (tsRNAs) in children with fulminant myocarditis during acute phase (FM-A group), children with fulminant myocarditis during convalescent phase (FM-C group), and healthy volunteers (Con group). A total of 750 precisely matched tsRNAs were identified in the plasma from the three groups. We find that a total of 13 tsRNAs were differentially expressed in FM-A and CON samples, of which 11 tsRNAs were upregulated and 2 were downregulated, and 694 tsRNAs were excluded ; a total of 8 tsRNAs were differentially expressed in paired FM-C and CON samples, of which 2 tsRNAs were upregulated and 6 were downregulated and 703 tsRNAs were excluded . This study provides new ideas for future research on elucidating the mechanisms of myocarditis through regulating tsRNAs levels.
2020-12-29 | GSE163944 | GEO
Project description:Fulminant myocarditis (FM) is the most serious type of childhood myocarditis. However, the molecular mechanism underlying the pathogenesis of FM has not been fully elucidated. Studies have shown that small extracellular vesicles (sEVs) play important roles in many diseases, but any potential role of sEVs in pediatric FM has not been reported. Here, the differential expression profiles of lncRNAs in plasma sEVs were studied in five children with FM and five healthy children using whole transcriptome sequencing, followed by functional analysis and screening of immune-related target genes. A total of 68 up-regulated and 11 down-regulated differentially expressed sEVs-lncRNAs were identified. Functional analysis showed that the differentially-expressed sEVs-lncRNAs were mainly involved in immune processes, apoptosis, and protein efflux. Further analysis of immune-related target genes revealed that differentially expressed sEVs-lncRNAs were closely related to immune activation, immune cell migration and cytokine pathway signal transduction in FM. Thus, sEVs-lncRNAs may play an important role in the pathogenesis of FM in children
2023-03-31 | GSE226412 | GEO
Project description:The pathophysiology of fulminant myocarditis (FM) is significantly influenced by the interactions between immunological and myocardial cells, involving exosome-mediated intercellular microRNA (miRNA) signaling. To further investigate the pathogenesis of FM and discover diagnostic biomarkers, we have employed miRNA microarray expression profiling as a discovery platform.
2023-05-02 | GSE221090 | GEO
Project description:Purpose: Exosome-derived microRNAs (miRNAs) are potential diagnostic biomarkers. However, little is known about their effectiveness as diagnostic biomarkers of fulminant myocarditis (FM). This study aimed to explore miRNA levels in serum exosomes of patients with FM as potential biomarkers for FM diagnosis. Methods: 10 samples were screened with a exosomal small RNA sequencing platform (RiboBio). A Mann-Whitney test was performed to discover differentially expressed miRNAs in the two pairwise comparisons: FM versus HC. Results: From the differentially expressed miRNAs, fourteen candidate miRNAs discovered via small RNA sequencing with P＜0.05 and fold expression change ＞2 were selected for further testing Conclusions: These data suggested that the miRNA panel in serum-derived exosomes provided excellent diagnostic capability for FM.
2021-01-27 | GSE147517 | GEO
Project description:Fulminant myocarditis (FM) is an acute fatal disease characterised by myocardial inflammation. Our previous study identified soluble growth stimulation- expressed gene 2 (sST2) as a sensitive and specific biomarker for early diagnosis of FM. However, its function in FM remains unclear.In the present study, we observed a marked elevation of sST2 in the plasma and hearts of mice with FM induced by coxsackievirus B3 (CVB3) and explored the main cellular sources of sST2 in FM. Moreover, using recombinant sST2 protein administration and unbiased transcriptomics analyses, we investigated the role and underlying mechanisms of sST2 in FM. Importantly, we found that sST2 has a novel non-classical function in cardiomyocytes, other than acting as an IL-33 decoy receptor. These findings reveal a novel role and action mechanism of sST2 in FM and suggest that sST2 may be a potential therapeutic target for FM.
2024-03-24 | GSE261940 | GEO
Project description:Serum exosomal miRNA profiles in fulminant myocarditis patients and healthy controls
| PRJNA615110 | ENA
Project description:SARS-CoV-2 infection in children is generally milder than in adults, yet a proportion of cases result in hyperinflammatory conditions often including myocarditis. To better understand these cases, we applied a multi-parametric approach to the study of blood cells of 56 children hospitalized with suspicion of SARS-CoV-2 infection. The most severe forms of MIS-C (multisystem inflammatory syndrome in children related to SARS-CoV-2), that resulted in myocarditis, were characterized by elevated levels of pro-angiogenesis cytokines and several chemokines. Single-cell transcriptomic analyses identified a unique monocyte/dendritic cell gene signature that correlated with the occurrence of myocarditis, characterized by sustained NF-kB activity, associated with decreased gene expression of NF-kB inhibitors and TNF-a signaling . We also found a weak response to type-I and type-II interferons, hyperinflammation and response to oxidative stress related to increased HIF-1a and VEGF signaling. These results provide potential for a better understanding of disease pathophysiology.
2021-07-13 | GSE167028 | GEO
Project description:SARS-CoV-2 infection in children is generally milder than in adults, yet a proportion of cases result in hyperinflammatory conditions often including myocarditis. To better understand these cases, we applied a multi-parametric approach to the study of blood cells of 56 children hospitalized with suspicion of SARS-CoV-2 infection. The most severe forms of MIS-C (multisystem inflammatory syndrome in children related to SARS-CoV-2), that resulted in myocarditis, were characterized by elevated levels of pro-angiogenesis cytokines and several chemokines. Single-cell transcriptomic analyses identified a unique monocyte/dendritic cell gene signature that correlated with the occurrence of myocarditis, characterized by sustained NF-kB activity, associated with decreased gene expression of NF-kB inhibitors and TNF-a signaling . We also found a weak response to type-I and type-II interferons, hyperinflammation and response to oxidative stress related to increased HIF-1a and VEGF signaling. These results provide potential for a better understanding of disease pathophysiology.
2021-07-13 | GSE167029 | GEO
Project description:Increasing evidences indicate diet-induced metabolic disorder could be paternally inherited, but the exact sperm epigenetic carrier remains unclear. Here, in a paternal high-fat diet (HFD) mouse model, we revealed that a highly enriched subset of sperm small RNAs (30-34 nt) that derived from the 5â halves of tRNAs (tsRNAs), exhibit changes in both expression profiles and RNA modifications. Injection of sperm tsRNAs from HFD male but not synthetic tsRNAs lacking RNA modifications, into normal zygotes generated metabolic disorders in the F1 offspring. Injection of HFD sperm tsRNAs derails gene expression in both early embryos and islets of F1 offspring, enriched in metabolic pathways, but unrelated to DNA methylation at CpG-enriched region. Collectively, we uncover sperm tsRNAs as a type of âepigenetic carrierâ that mediate intergenerational inheritance of acquired traits. Mature sperm small-RNA profiles between High-fat-diet (HFD) and Normal-diet (ND) males; Transcriptional profiles of 8-cell embryos and balstocysts that developed from zygotes that injected with sperm RNAs from HFD vs ND males. Transcriptional profiles and RRBS profiles of islets of F1 offsrping that generated from zygotes that injected with sperm RNAs from HFD vs ND males.
2015-12-31 | E-GEOD-75544 | biostudies-arrayexpress
Project description:Immune checkpoint inhibitors (ICIs), antibodies targeting PD-1/PD-L1 or CTLA4 have revolutionized cancer management but are associated with devastating immune-related adverse events (irAEs) including myocarditis. The main risk factor for ICI myocarditis is the use of combination PD-1 and CTLA4 inhibition. ICI-myocarditis is often fulminant and is pathophysiologically characterized by myocardial infiltration of T lymphocytes and macrophages. While much has been learned regarding the role of T-cells in ICI-myocarditis, little is understood regarding the identity, transcriptional diversity, and functions of infiltrating macrophages. We employed an established murine ICI myocarditis model (Ctla4+/-Pdcd1-/- mice) to explore the cardiac immune landscape using single-cell RNA-sequencing, immunostaining, and molecular imaging. We observed marked increases in CCR2+ monocyte-derived macrophages and CD8+ T-cells in this model. The macrophage compartment was heterogeneous and displayed marked enrichment in an inflammatory CCR2+ subpopulation expressing Cxcl9, Cxcl10, Gbp2b, and Fcgr4 that originated from CCR2+ monocytes. Importantly, a similar macrophage population expressing CXCL9, CXCL10, and CD16α (human homologue of mouse FcgR4) were found selectively in patients with ICI myocarditis compared to other forms of heart failure and myocarditis. In silico prediction of cell-cell communication suggested interactions between T-cells and Cxcl9+Cxcl10+ macrophages via IFN-γ and CXCR3 signaling pathways. Depleting CD8+T-cells and blockade of IFN-γ signaling blunted the emergence of Cxcl9+Cxcl10+ macrophages in the heart and attenuated myocarditis suggesting that this interaction was necessary for disease pathogenesis. Collectively, these data demonstrate that ICI-myocarditis is associated with the emergence of a specific population of inflammatory macrophages and suggest the possibility that IFN-γ blockade may serve as an effective treatment for this devastating condition.
2023-07-01 | GSE227437 | GEO