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Increased circulating miR-625-3p - a potential biomarker for patients with malignant pleural mesothelioma.


Introduction: We investigated the ability of cell-free microRNAs (miRNAs) in plasma and serum to serve as a biomarker for malig- nant mesothelioma (MM). Methods: Using miRNA microarrays, we profiled plasma samples from MM patients and healthy controls. miRNAs with significantly different abundance between cases and controls were validated in a larger series of MM patients and in an independent series of MM patients using quantitative real-time polymerase chain reaction. Levels of candidate miRNAs were also quantified in MM tumor samples. Results: We compared cell-free miRNA profiles in plasma from MM patients with healthy controls. Reviewing 90 miRNAs previ- ously reported to be associated with MM, we found that the levels of two miRNAs, miR-29c* and miR-92a, were elevated in plasma sam- ples from MM patients. In addition, we identified 15 novel miRNAs present at significantly higher levels in the plasma of MM patients. Further analysis of candidate miRNAs by real time-quantitative polymerase chain reaction confirmed that one of them, miR-625-3p, was present in significantly higher concentration in plasma/serum from MM patients and was able to discriminate between cases and controls, in both the original and the independent series of patients. MiR-625-3p was also found to be up-regulated in tumor speci- mens from a group of 18 MM patients, who underwent extrapleural pneumonectomy. Conclusion: Our data confirm the potential of miR-29c* and miR- 92a as candidate tumor markers and reveal that miR-625-3p is a promising novel diagnostic marker for MM.

Type Journal
Authors Kirschner, M.B.; Cheng, Y.Y.; Badrian, B.; Kao, S.C.; Creaney, J.; Edelman, J.J.B.; Armstrong, N.J.; Vallely, M.P.; Musk, A.W.; Robinson, B.W.S.; McCaughan, B.C.; Klebe, S.; Mutsaers, S.E.; van Zandwijk, N.; Reid, G.
Publisher Name Journal of Thoracic Oncology
Published Date 2012-07-31
Published Volume 7
Published Issue 7
Published Pages 1184-1191
Status Published in-print
DOI 10.1097/JTO.0b013e3182572e83
OpenAccess link to author's accepted manuscript version