Tumor Biology

, Volume 36, Issue 11, pp 8845–8852 | Cite as

Identification of miR-199a-5p in serum as noninvasive biomarkers for detecting and monitoring osteosarcoma

Research Article

Abstract

Emerging evidence has suggested that circulating microRNAs (miRNAs) in serum/plasma can serve as noninvasive biomarkers for cancer detection; however, little is known about circulating miRNA profiles in osteosarcoma, a primary malignant bone tumor with high morbidity in young adults and adolescents. The objective of this study was to investigate whether circulating miRNAs in serum could be a useful biomarker for detecting osteosarcoma and monitoring tumor dynamics. Serum samples were obtained from 60 patients before surgery, 28 patients after 1 month of surgery, and 60 healthy individuals. The study was divided into three steps: (1) initial screening of the profiles of circulating miRNAs in pooled serum samples from both healthy controls and pre- and postoperative osteosarcoma patients using a TaqMan low-density qPCR array (TLDA); (2) evaluation of miRNA concentration in individual serum samples from 60 preoperative osteosarcoma patients and 60 healthy controls by a quantitative RT-PCR assay; and (3) evaluation of miRNA concentration in paired serum samples from 28 pre- and postoperative osteosarcoma patients by a quantitative RT-PCR assay. The initial analysis showed that concentrations of serum miRNAs were significantly altered between preoperative osteosarcoma patients and healthy controls and between pre- and postoperative osteosarcoma patients. The quantitative RT-PCR assay showed that serum miR-199a-5p concentrations were significantly higher in osteosarcoma patients than in controls. The value of the area under the ROC curve was 0.8606. Serum levels of miR-199a-5p were significantly lower in post- than preoperative samples. The results indicated the potential of circulating miRNAs as novel noninvasive biomarkers for detecting and monitoring osteosarcoma.

Keywords

MicroRNA Serum microRNA Osteosarcoma miR-199a-5p 

Notes

Acknowledgments

This work was supported by grants from the National Natural Science Foundation of China (no. 81102039), China Postdoctoral Science Foundation (no. 2012 M512178), and Special Fund of Jiangsu Province for the Clinical Center of Orthopedics (no. BL2012002). The funders had no role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript.

Conflicts of interest

None

Supplementary material

13277_2015_3421_MOESM1_ESM.doc (288 kb)
ESM 1 (DOC 288 kb)

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Copyright information

© International Society of Oncology and BioMarkers (ISOBM) 2015

Authors and Affiliations

  1. 1.Department of Orthopedics, Jinling Hospital, School of MedicineNanjing UniversityNanjingChina
  2. 2.State Key Laboratory of Pharmaceutical Biotechnology, School of Life SciencesNanjing UniversityNanjingChina

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