Tumor Biology

, Volume 37, Issue 4, pp 4445–4455 | Cite as

Upregulation of long non-coding RNA TUG1 correlates with poor prognosis and disease status in osteosarcoma

  • Bing Ma
  • Meng Li
  • Lei Zhang
  • Ming Huang
  • Jun-Bin Lei
  • Gui-Hong Fu
  • Chun-Xin Liu
  • Qi-Wen Lai
  • Qing-Quan Chen
  • Yi-Lian Wang
Original Article

Abstract

The pathogenesis of osteosarcoma involves complex genetic and epigenetic factors. This study was to explore the impact and clinical relevance of long non-coding RNA (lncRNA), Taurine up-regulated gene 1 (TUG1) on patients with osteosarcoma. Seventy-six osteosarcoma tissues and matched adjacent normal tissues were included for analysis. The plasma samples were obtained from 29 patients with osteosarcoma at pre-operation and post-operation, 42 at newly diagnosed, 18 who experienced disease progression or relapse, 45 post-treatment, 36 patients with benign bone tumor, and 20 healthy donors. Quantitative real-time reverse transcript polymerase chain reactions were used to assess the correlation of the expression levels of TUG1 with clinical parameters of osteosarcoma patients. TUG1 was significantly overexpressed in the osteosarcoma tissues compared with matched adjacent normal tissues (P < 0.01) and was closely correlated with tumor size, post-operative chemotherapy, and Enneking surgical stage. Upregulation of TUG1 strongly correlated with poor prognosis and was an independent prognostic indicator for overall survival (HR = 2.78, 95% CI = 1.29–6.00, P = 0.009) and progression-free survival (HR = 1.81, 95% CI = 1.01–3.54, P = 0.037). Our constructed nomogram containing TUG1 had more predictive accuracy than that without TUG1 (c-index 0.807 versus 0.776, respectively). In addition, for plasma samples, TUG1 expression levels were obviously decreased in post-operative patients (mean ΔCT −4.98 ± 0.22) compared with pre-operation patients (mean ΔCT −6.09 ± 0.74), and the changes of TUG1 expression levels were significantly associated with disease status. Receiver operating characteristic (ROC) curve analysis demonstrated that TUG1 could distinguish patients with osteosarcoma from healthy individuals compared with alkaline phosphatase (ALP) (the area under curve 0.849 versus 0.544). TUG1 was overexpressed in patients with osteosarcoma and strongly correlated with disease status. In addition, TUG1 may serve as a molecular indicator in maintaining surveillance and forecasting prognosis.

Keywords

lncRNA TUG1 Osteosarcoma Prognosis 

Notes

Author contributions

BM and YLW conceived and designed the experiments.

BM, ML, LZ, MH, JBL, GHF, CXL, QWL, and QQC performed the experiments.

MB, ML, and LZ analyzed the data.

LZ contributed reagents/materials/analysis tools.

BM and YLW wrote the manuscript.

BM and LZ designed the software used in the analysis.

Compliance with ethical standards

The Medical Ethics Committee of The third the People’s Hospital of Bengbu (Bengbu, China) has approved this protocol. Written informed consent was obtained from all enrolled patients. All samples were handled at The third the People’s Hospital of Bengbu and made anonymous based on ethical and legal standards.

Conflicts of interest

None

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Copyright information

© International Society of Oncology and BioMarkers (ISOBM) 2015

Authors and Affiliations

  • Bing Ma
    • 1
  • Meng Li
    • 2
  • Lei Zhang
    • 3
  • Ming Huang
    • 1
  • Jun-Bin Lei
    • 1
  • Gui-Hong Fu
    • 4
  • Chun-Xin Liu
    • 5
  • Qi-Wen Lai
    • 6
  • Qing-Quan Chen
    • 7
  • Yi-Lian Wang
    • 8
  1. 1.Department of OrthopaedicsThe third the People’s Hospital of BengbuBengbuChina
  2. 2.Department of OrthopaedicsAnhui Provincial HospitalHeifeiChina
  3. 3.Department of OrthopaedicsLanxi People’s HospitalJinhuaChina
  4. 4.Department of OrthopaedicsGuizhou Province Osteological HospitalGuiyangChina
  5. 5.Department of OrthopaedicsFujian Jianou HospitalFujianChina
  6. 6.Department of PediatricsDehua County HospitalFujianChina
  7. 7.Department of OrthopaedicsFuzhou General Hospital of Nanjing Military AreaFuzhouChina
  8. 8.Department of CardiologyThe Second People’s Hospital of LianyungangXinpuChina

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