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RNA sequencing of RNA obtained from urinary extracellular vesicles

ABSTRACT: Comparing small urinary extracellular vesicle purification methods with a view to RNA sequencing – enabling robust and non-invasive biomarker research

PROVIDER: PRJEB30403 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR3006060.fastq.gz	Fastqsanger.gz
	ERR3006070.fastq.gz	Fastqsanger.gz
	ERR3006080.fastq.gz	Fastqsanger.gz
	ERR3006061.fastq.gz	Fastqsanger.gz
	ERR3006071.fastq.gz	Fastqsanger.gz

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Project description:Purpose: Gastric cancer (GC) is one of the most common causes of cancer deaths worldwide; however, reliable and non-invasive screening methods for GC are not established. Therefore, we conducted this study to develop a biomarker for GC detection, consisting of urinary microRNAs (miRNAs). Experimental Design: We matched 306 participants by age and sex (153 pairs consisting of patients with GC and healthy controls [HCs]), then randomly divided them across three groups: (1) the discovery cohort (4 pairs); (2) the training cohort (95 pairs); (3) the validation cohort (54 pairs). Moreover, 64 participants (32 pairs) with serum samples were also enrolled in the serum cohort. Result: There were 22 urinary miRNAs with significantly aberrant expressions between the two groups in the discovery cohort. Upon multivariate analysis of the training cohort, urinary expression levels of miR-6807-5p and miR-6856-5p were significantly independent biomarkers for diagnosis of GC, in addition to Helicobacter pylori (H. pylori) status. A diagnostic panel that combined the aberrant miRNAs and H. pylori status distinguished between HC and GC samples with an area under the curve (AUC) = 0.736. In the validation cohort, urinary miR-6807-5p and miR-6856-5p showed significantly higher expression levels in the GC group, and the combination biomarker panel of miR-6807-5p, miR-6856-5p, and H. pylori status also showed excellent performance (AUC = 0.885). In addition, serum levels of miR-6807-5p and miR-6856-5p were significantly higher in the GC group. Conclusion: This novel biomarker panel enables early and non-invasive detection of GC.

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