Journal
SCIENTIFIC REPORTS
Volume 5, Issue -, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/srep10437
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Funding
- National Natural Science Foundation of China [81402750, 81230068, 81102089]
- Natural Science Foundation of Jiangsu Province [BK2011773]
- Key Program for Basic Research of Jiangsu Provincial Department of Education [11KJB330002, 12KJA330002]
- Jiangsu Provincial Six Talent Peaks Project [2012-SWYY-028]
- Specialized Research Fund for the Doctoral Program of Higher Education [20123234110001]
- Jiangsu Provincial Science and Technology Innovation Team
- Priority Academic Program Development of Jiangsu Higher Education Institutions (Public Health and Preventive Medicine)
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MicroRNAs (miRNAs), abundant and highly stable in the plasma, have been widely reported. This greatly pursued us to investigate whether plasma miRNAs could be considered as powerful biomarkers for diagnosing bladder cancer (BC). We performed a plasma miRNAs profile with the TaqMan Low Density Array, and a two-phase validation to detect the candidate miRNAs expression by quantitative PCR. The receiver operating characteristic curve (ROC) and the area under curve (AUC) were used to evaluate diagnostic accuracy. A total of eight plasma miRNAs abnormally expressed between BC patients and healthy controls in microarray analysis (i.e., elevated miRNAs for miR-505, miR-363 and miR-663b, and decreased for miR-99a, miR-194, miR-100, miR-497 and miR-1 in BC plasma). In further independent cohorts, miR-497 and miR-663b with significantly differential expression were confirmed. Moreover, the AUC, sensitivity and specificity were raised to 0.711 (95% CI = 0.641-0.780), 69.7% and 69.6%, respectively, when miR-497 and miR-663b were integrated. This is the first study systematically exploring the existence of specific plasma miRNAs as early diagnostic biomarkers for BC in Chinese population; and these findings supported that plasma miR-497 and miR-663b could be promising novel circulating biomarkers in clinical detection of BC.
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