Project description:Diffuse large B-cell lymphoma (DLBCL) is the most common subtype of non-Hodgkin Lymphoma with complex clinical symptoms. Currently, the diagnosis of DLBCL depends largely on pathologic analysis of biopsy tissue, which is an invasive procedure and often poses some risk to patients. Exosomal miRNAs have emerged as promising noninvasive biomarkers for detecting tumor or monitoring disease progress. We aim to investigate the potential of circulating exosomal miRNAs to assist with diagnosis of DLBCL.In the present research, we used the miRCURY LNA™ microRNA Array to investgate the profiles of differentially expressed miRNAs in the exosomes of peripheral blood serum. As a result, circulating exosomal miRNA profiling yielded a total of 332 differentially expressed miRNAs (157 with up-expression and 175 with down-expression) between the DLBCL patients and healthy controls.
Project description:Exosomal miRNAs have emerged as promising disease biomarkers. We aim to investigate the potential of exosomal miRNAs to assist with AIS clinical diagnosis. In the present research, we used the Affymetrix Genechip miRNA 4.0 Array to investgate the profiles of differentially expressed miRNAs (DEMs) in the exosomes of peripheral blood plasma. As a result, exosomal miRNA profiling yielded a total of 05 DEMs between the AIS (Acute Ischemic Stroke) patients and controls.
Project description:Tuberculosis (TB) is difficult to diagnose under complex clinical conditions. Exosomal miRNAs have emerged as promising disease biomarkers. We aim to investigate the potential of exosomal miRNAs to assist with TB clinical diagnosis. In the present research, we used the Affymetrix Genechip miRNA 4.0 Array to investgate the profiles of differentially expressed miRNAs (DEMs) in the exosomes of peripheral blood plasma. As a result, exosomal miRNA profiling yielded a total of 102 DEMs (98 with up-expression and 4 with down-expression) between the TB (pulmonary tuberculosis and tuberculosis meningitis) patients and controls.
Project description:Objective: The expression pattern of exosomal miRNAs derived from parathyroid tumor is still unknown. In the present work, we aimed to examine the differences on microRNA (miRNA) expression, present in serum exosomes, by comparing parathyroid carcinoma (PC) and parathyroid adenoma (PA). Methods: MiRNA expression profile of serum exosomes, derived from 4 PC patients and 4 PA patients, were analyzed by next-generation sequencing technology. The differential expressions of target miRNAs were further verified in both serum exosomes and tissues of PC/PA patients by quantitative reverse transcription polymerase chain reaction (qRT-PCR). Lastly, receiver operating characteristic (ROC) curves were plotted to investigate the efficiency of target exosomal miRNAs in distinguishing PC patients from PA controls. Results: Multiple differentially expressed miRNAs of serum exosomes were screened out by sequencing. Based on this screening, hsa-miR-146b-5p (p=0.0846), hsa-miR-27a-5p (p=0.0412), hsa-miR-93-5p (p=0.73), hsa-miR-381-3p (p=0.1239) and hsa-miR-134-5p (p=0.0694) were up-regulated in the serum exosomes of PC patients. These results were validated by qPCR, where the trend on differential miRNA expression was consistent with the sequencing results. Specifically, the expression of exosomal hsa-miR-27a-5p was able to clearly distinguish PC patients from PA controls, and related analysis indicated that the area under the ROC curve was 0.8594 (p=0.0157). Conclusion: Here we present, for the first time, the miRNA expression profile of serum exosomes derived from PC patients. Based on this result, we presently suggest that the exosomal hsa-miR-27a-5p may serve as a putative tumor marker for preoperative identification of PC and PA subjects.
Project description:The aim of this study was to identify and evaluate exosomal miRNAs in serum as early diagnostic markers for gastric cancer (GC). Methods: Using next-generation sequencing (NGS) and bioinformatics, we identified candidate serum exosomal miRNA markers for early detection of GC in patients. The candidates were further validated by qRT-PCR in 50 newly recruited early-stage GC patients and matched healthy individuals. Results: NGS revealed that the average mappable reads in the RNA libraries were about 6.5 million per patient. A total of 66 up and 13 down-regulated exosomal miRNAs were found in the screened cohort after removal of log2 transformed read counts <5 and p >0.05. In the validation cohort, by comparing candidate exosomal miRNAs levels in early-stage GC patients and healthy individuals, higher levels of miR-92b-3p, let-7g-5p, miR-146b-5p and miR-9-5p were found to be significantly associated with GC. Diagnostic power of the combined panels of the exosomal miRNAs or the combination of exosomal miRNAs and CEA outperformed that of single exosomal miRNA marker for establishing a diagnosis of early-stage GC. In addition, serum levels of exosomal miR-92b-3p were significantly associated with low adhesion, let-7g-5p and miR-146b-5p were significantly correlated with nerve infiltration, and miR146b-5p was statistically correlated with tumor invasion depth in early-stage GC. Conclusions: Serum exosomal miR-92b-3p, -146b-5p, -9-5p, and let-7g-5p may serve as potential noninvasive biomarkers for early diagnosis of GC. Further validation of these candidate exosomal miRNAs in larger experimental cohorts are required in order to confirm the diagnostic values.
Project description:Occupational dermatitis medicamentosa-like of TCE (ODMLT) is a complex immune process which can cause serious damage of liver function, and becoming a serious occupational health problem in China. However, the pathogenesis of ODMLT remained undefined. The aim of the present study was to identify the expression profiles of circulating exosomal miRNAs in ODMLT patients and its role in the regulation of liver injury. The exosomes were isolated from the serum of patients and healthy individuals, and characterized by electron microscopy, nanoparticle tracking analysis, and Western blot and total RNA was extracted. Expression of exosomal miRNAs was evaluated with Agilent Human miRNA microarrays and the expression of selective serum exosomal miRNA were verified by qRT-PCR.