Dataset Information

EV-associated miRNAs from peritoneal lavage as potential diagnostic biomarkers in colorectal cancer.

ABSTRACT: BACKGROUND:Colorectal cancer (CRC) is the third leading cause of cancer-related mortality worldwide. Current systematic methods for diagnosing have inherent limitations so development of a minimally-invasive diagnosis, based on the identification of sensitive biomarkers in liquid biopsies could therefore facilitate screening among population at risk. METHODS:In this study, we aim to develop a novel approach to identify highly sensitive and specific biomarkers by investigating the use of extracellular vesicles (EVs) isolated from the peritoneal lavage as a source of potential miRNA diagnostic biomarkers. We isolated EVs by ultracentrifugation from 25 ascitic fluids and 25 peritoneal lavages from non-cancer and CRC patients, respectively. Analysis of the expression of EV-associated miRNAs was performed using Taqman OpenArray technology through which we could detect 371 miRNAs. RESULTS:210 miRNAs were significantly dysregulated (adjusted p value?

SUBMITTER: Roman-Canal B

PROVIDER: S-EPMC6585099 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature

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EV-associated miRNAs from peritoneal lavage as potential diagnostic biomarkers in colorectal cancer.

Roman-Canal Berta B Tarragona Jordi J Moiola Cristian Pablo CP Gatius Sònia S Bonnin Sarah S Ruiz-Miró Maria M Sierra José Enrique JE Rufas Maria M González Esperanza E Porcel José M JM Gil-Moreno Antonio A Falcón-Pérez Juan M JM Ponomarenko Julia J Matias-Guiu Xavier X Colas Eva E

Journal of translational medicine 20190620 1

<h4>Background</h4>Colorectal cancer (CRC) is the third leading cause of cancer-related mortality worldwide. Current systematic methods for diagnosing have inherent limitations so development of a minimally-invasive diagnosis, based on the identification of sensitive biomarkers in liquid biopsies could therefore facilitate screening among population at risk.<h4>Methods</h4>In this study, we aim to develop a novel approach to identify highly sensitive and specific biomarkers by investigating the ...[more]

PMID: 31221189

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Project description:AimThe study was designed to assess the possibility of using circulating miRNAs (serum miRNAs) as diagnostic biomarkers in colorectal cancer (CRC) and to identify their possibility as candidates for targeted therapy.MethodsThe study involved two sample sets: 1- a training set which included 90 patients with colorectal related disease (30 with CRC, 18 with inflammatory bowel disease (IBD), 18 with colonic polyps (CP) and 24 with different colonic symptoms but without any colonoscopic abnormality who were enrolled as control group) and 2- a validation set which included 100 CRC patients. Serum miRNAs were extracted from all subjects to assess the expression profiles for the following miRNAs (miR-17, miR-18a, miR-19a, miR-19b, miR-20a, miR-21, miR-146a, miR-223, miR-24, miR-454, miR-183, miR-135a, miR- 135b and miR- 92a) using the custom miScript miRNA PCR-based sybergreen array. The area under the receiver operating characteristic curve (AUC) was used to evaluate the diagnostic performance of the studied miRNAs for colorectal cancer diagnosis.ResultsData analysis of miRNA from the training set showed that; compared to control group, only miR-19b was significantly up-regulated in patients with IBD group (fold change = 5.24, p = 0.016), whereas in patients with colonic polyps, miR-18a was significantly up-regulated (fold change = 3.49, p-value = 0.018). On the other hand, miR-17, miR-19a, miR-20a and miR-223 were significantly up-regulated (fold change = 2.35, 3.07, 2.38 and 10.35; respectively and p-value = 0.02, 0.015, 0.017 and 0.016; respectively in CRC patients. However, the validation set showed that only miR-223 was significantly up-regulated in CRC patients (fold change = 4.06, p-value = 0.04).ConclusionAberrant miRNA expressions are highly involved in the cascade of colorectal carcinogenesis. We have found that (miR-17, miR-19a, miR-20a and miR-223) could be used as diagnostic biomarkers for CRC. On the other hand, miR-19b and miR-18a could be used as diagnostic biomarkers for CP and IBD respectively.

Dataset Information

EV-associated miRNAs from peritoneal lavage as potential diagnostic biomarkers in colorectal cancer.

Publications

EV-associated miRNAs from peritoneal lavage as potential diagnostic biomarkers in colorectal cancer.

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