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Dysregulated circRNAs in plasma from active tuberculosis patients

ABSTRACT: Dysregulated circRNAs in plasma from active tuberculosis patients

PROVIDER: PRJNA418495 | ENA |

REPOSITORIES: ENA

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Dysregulated circRNAs in plasma from active tuberculosis patients

Project description:Role of circRNAs in active tuberculosis (TB) remains unknown. The present study was aimed to determine plasma circRNA expression profile in active TB patients to identify potential biomarker by circRNA microarrays.

2018-07-06 | GSE106953 | GEO

Dysregulated circRNAs in plasma from active tuberculosis patients.

Project description:Endogenous circular RNAs (circRNAs) have been reported in various diseases. However, their role in active TB remains unknown. The study was aimed to determine plasma circRNA expression profile to characterize potential biomarker and improve our understanding of active TB pathogenesis. CircRNA expression profiles were screened by circRNA microarrays in active TB plasma samples. Dysregulated circRNAs were then verified by qRT-PCR. CircRNA targets were predicted based on analysis of circRNA-miRNA-mRNA interaction. GO and KEGG pathway analyses were used to predict the function of circRNA. ROC curve was calculated to evaluate diagnostic value for active TB. A total of 75 circRNAs were significantly dysregulated in active TB plasma. By further validation, hsa_circRNA_103571 exhibited significant decrease in active TB patients and showed potential interaction with active TB-related miRNAs such as miR-29a and miR-16. Bioinformatics analysis revealed that hsa_circRNA_103571 was primarily involved in ras signalling pathway, regulation of actin cytoskeleton, T- and B-cell receptor signalling pathway. ROC curve analysis suggested that hsa_circRNA_103571 had significant value for active TB diagnosis. Circulating circRNA dysregulation may play a role in active TB pathogenesis. Hsa_circRNA_103571 may be served as a potential biomarker for active TB diagnosis, and hsa_circRNA_103571-miRNA-mRNA interaction may provide some novel mechanism for active TB.

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circRNAs microarray analysis in plasma of Parkinson’s Disease

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Profile of plasma exosome-derived circrnas from acute ischemic stroke patients compared with controls

Project description:Stroke is one of the major causes of death and long-term disability, of which acute ischemic stroke (AIS) is the most common type. Although circRNA expression profiles of AIS patients have been reported to be significantly altered in blood and peripheral blood mononuclear cells, the role of exosome-contained circRNAs after AIS is still unknown. Plasma exosomes from ten AIS patients and ten controls were isolated, and through microarray and bioinformatics analysis, profile and putative function of circRNAs in the plasma exosomes were studied. A total of 198 circRNAs were differentially quantified (|log2 FoldChange|≥1.00, P<0.05) between AIS patients and controls.The functions of host genes of differentially quantified circRNAs, including RNA and protein process, focal adhesion and leukocyte transendothelial migration, were associated with the development of AIS. As miRNA sponge, differentially quantified circRNAs had the potential to regulate pathways related to AIS, like PI3K-Akt, AMPK and chemokine pathways. Of 198 differentially quantified circRNAs, 96 circRNAs possessing strong translational ability could affect cellular structure and activity, like focal adhesion, tight junction and endocytosis. Most differentially quantified circRNAs were predicted to bind to EIF4A3 and AGO2- two RNA binding proteins (RBPs)- and play a role in AIS. In conclusion, plasma exosome-derived circRNAs were significantly differentially quantified between AIS patients and controls, and participated in the occurrence and progression of AIS by sponging miRNA/RBPs or translating into proteins, indicating that circRNAs from plasma exosomes could be crucial molecules in the pathogenesis of AIS and promising candidates as diagnostic biomarkers and therapeutic targets for the condition.

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circRNAs expression in the plasma of DM patients, DKD patients and healthy controls

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