Expression of Serum Exosomal MicroRNA-21 in Human Hepatocellular Carcinoma

Overview

Journal Biomed Res Int

Publisher Wiley

Specialties Biomedical Engineering
Biotechnology
General Medicine

Date 2014 Jun 26

PMID 24963487

Citations 177

Authors

Hongwei Wang

Lijuan Hou

Aihui Li

Yuxiu Duan

Haili Gao

Xinwen Song

Affiliations

Soon will be listed here.

Abstract

New strategies for the diagnosis of hepatocellular carcinoma (HCC) are urgently needed. There is an increasing interest in using microRNAs (miRNAs) as biomarkers in diseases. In this study, we examined the expression of miR-21 in serum exosomes from patients with HCC or chronic hepatitis B (CHB) and investigated the potential clinical significance of miR-21. Quantitative RT-PCR indicated that the concentration of miR-21 was significantly higher in exosomes than in exosome-depleted supernatants or the whole serum. Further, the expression level of serum exosomal miR-21 was significantly higher in patients with HCC than those with CHB or healthy volunteers (P < 0.0001, P < 0.0001, resp.). High level of miR-21 expression correlated with cirrhosis (P = 0.024) and advanced tumor stage (P = 0.001). Although serum level of miR-21 was higher in patients with HCC than in patients with CHB and healthy volunteers, the sensitivity of detection is much lower than using exosomal miR-21. These findings indicate that miR-21 is enriched in serum exosomes which provides increased sensitivity of detection than whole serum. Exosomal miR-21 may serve as a potential biomarker for HCC diagnosis.

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