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Tumor Biology

, Volume 37, Issue 4, pp 5193–5202 | Cite as

miR-198 targets SHMT1 to inhibit cell proliferation and enhance cell apoptosis in lung adenocarcinoma

  • Shujun Wu
  • Guojun Zhang
  • Ping Li
  • Shanshan Chen
  • Furui Zhang
  • Juan Li
  • Chenyang Jiang
  • Xiaonan Chen
  • Yuanyuan Wang
  • Yuwen Du
  • Qianqian Sun
  • Guoqiang Zhao
Original Article

Abstract

MiR-198 is involved in tumorigenesis, migration, invasion, and metastasis of various malignant cancers. However, the exact expression levels of miR-198 and the molecular mechanism underlying its role in lung adenocarcinoma require further exploration. In this study, quantitative real-time PCR was applied to study miR-198 and serine hydroxymethyltransferase 1 (SHMT1) expression in 47 paired lung adenocarcinoma tissues and adjacent nontumor lung tissues. Clinicopathological characters were analyzed. Pearson’s correlation analysis was used to detect the relationship between miR-198 and SHMT1 expression. The function of miR-198 was explored by measuring cell proliferation, cell apoptosis, and the cell-cycle in vitro and in vivo. The target gene of miR-198 was certified using dual luciferase report assay. We found that in lung adenocarcinoma, miR-198 was significantly downregulated and SHMT1 was inversely upregulated. A strong negative correlation was noticed between miR-198 and SHMT1 expression. Further analysis revealed that miR-198 expression was associated with TNM stage and lymph node metastasis. Upregulated miR-198 could inhibit cell proliferation, enhance cell apoptosis, and lead to cell-cycle arrest in lung adenocarcinoma, which showed a more effective alteration than SHMT1 siRNA. Moreover, we identified SHMT1 as a target gene of miR-198. In conclusion, miR-198 suppressed proliferation of lung adenocarcinoma cells both in vitro and in vivo by directly targeting SHMT1. miR-198 may be a potential therapeutic target for lung adenocarcinoma in the near future.

Keywords

MiR-198 Serine hydroxymethyltransferase 1 Proliferation Apoptosis Lung adenocarcinoma 

Notes

Acknowledgements

The authors are grateful to all staff that have contributed to this study at the lab center. This study was financially supported by Henan’s Ministry of Health, China (no. 201401005).

Compliance with ethical standards

Conflicts of interest

None.

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Copyright information

© International Society of Oncology and BioMarkers (ISOBM) 2015

Authors and Affiliations

  • Shujun Wu
    • 1
  • Guojun Zhang
    • 1
  • Ping Li
    • 1
  • Shanshan Chen
    • 1
  • Furui Zhang
    • 1
  • Juan Li
    • 1
  • Chenyang Jiang
    • 2
  • Xiaonan Chen
    • 3
  • Yuanyuan Wang
    • 3
  • Yuwen Du
    • 3
  • Qianqian Sun
    • 3
  • Guoqiang Zhao
    • 3
  1. 1.Department of Respiratory MedicineThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
  2. 2.Department of NeurologyThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
  3. 3.School of Basic Medical SciencesZhengzhou UniversityZhengzhouChina

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