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Tumor Biology

, Volume 36, Issue 10, pp 7849–7858 | Cite as

CMTM3 inhibits cell growth and migration and predicts favorable survival in oral squamous cell carcinoma

  • Heyu Zhang
  • Jianyun Zhang
  • Xu Nan
  • Xuefen Li
  • Jiafei Qu
  • Yingying Hong
  • Lisha Sun
  • Yan Chen
  • Tiejun Li
Research Article

Abstract

Downregulation of CKLF-like MARVEL transmembrane domain-containing member 3 (CMTM3) has been reported in a number of human tumors. However, the role of CMTM3 in oral squamous cell carcinoma (OSCC) remains largely unknown. In this study, we showed that the expression of CMTM3 was significantly reduced in OSCC cell lines and primary tumor specimens (P < 0.001). Methylation-specific PCR showed hypermethylation in CMTM3 promoter in a significant proportion of tumor tissues (61 %). The expression of CMTM3 was associated with T stage, lymph node metastasis, tumor node metastasis (TNM) stage, and recurrence of OSCC patients (P < 0.05, n = 201). More importantly, CMTM3 expression was associated with the prognosis of OSCC patients (P < 0.001) and was an independent prognostic factor (hazard ratio = 0.593, 95 % confidence interval, 0.272–1.292; P = 0.039). Overexpression of CMTM3 inhibited the growth and migration of OSCC cells. In vivo experiments also showed that the growth of OSCC xenografts in nude mice was significantly inhibited by CMTM3 overexpression. These findings indicate that downregulation of CMTM3 due to promoter hypermethylation contributed to the proliferation and migration of OSCC cells and suggest that CMTM3 is an independent prognostic factor for the evaluation of the survival of OSCC patients.

Keywords

CMTM3 Promoter methylation Tumor suppressor gene Oral squamous cell carcinoma 

Notes

Acknowledgments

This work was supported by the National Natural Science Foundation of China (grant numbers 81300894, 81030018, 30901680).

Conflicts of interest

None

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Copyright information

© International Society of Oncology and BioMarkers (ISOBM) 2015

Authors and Affiliations

  • Heyu Zhang
    • 1
  • Jianyun Zhang
    • 2
  • Xu Nan
    • 3
  • Xuefen Li
    • 1
  • Jiafei Qu
    • 2
  • Yingying Hong
    • 2
  • Lisha Sun
    • 1
  • Yan Chen
    • 2
  • Tiejun Li
    • 2
  1. 1.Central LaboratoryPeking University School and Hospital of StomatologyBeijingChina
  2. 2.Department of Oral PathologyPeking University School and Hospital of StomatologyBeijingChina
  3. 3.Center for Human Disease Genomics, School of Basic Medical SciencesPeking UniversityBeijingChina

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