lncRNA SNHG16 Mediates Cell Proliferation and Apoptosis in Cholangiocarcinoma by Directly Targeting miR-146a-5p/GATA6 Axis.

Tao Wu, Ming-Sheng Lei, Xu-Zhao Gao, Ting-Gang Xiong, Kang Yang, Qian Gong, Rui Tang, Yue-Peng Tian, Xiao-Hua Fu
Author Information
  1. Tao Wu: Department of Hepatobiliary Surgery, Zhangjiajie People's Hospital, No.192 Guyong Road, Yongding District, Zhangjiajie, 427000, Hunan Province, People's Republic of China. happyfei2006@163.com. ORCID
  2. Ming-Sheng Lei: Department of Respiratory Medicine, Zhangjiajie People's Hospital, Zhangjiajie, 427000, Hunan Province, People's Republic of China.
  3. Xu-Zhao Gao: Department of Hepatobiliary Surgery, Zhangjiajie People's Hospital, No.192 Guyong Road, Yongding District, Zhangjiajie, 427000, Hunan Province, People's Republic of China.
  4. Ting-Gang Xiong: Department of Hepatobiliary Surgery, Zhangjiajie People's Hospital, No.192 Guyong Road, Yongding District, Zhangjiajie, 427000, Hunan Province, People's Republic of China.
  5. Kang Yang: Department of Hepatobiliary Surgery, Zhangjiajie People's Hospital, No.192 Guyong Road, Yongding District, Zhangjiajie, 427000, Hunan Province, People's Republic of China.
  6. Qian Gong: Department of Hepatobiliary Surgery, Zhangjiajie People's Hospital, No.192 Guyong Road, Yongding District, Zhangjiajie, 427000, Hunan Province, People's Republic of China.
  7. Rui Tang: Department of Hepatobiliary Surgery, Zhangjiajie People's Hospital, No.192 Guyong Road, Yongding District, Zhangjiajie, 427000, Hunan Province, People's Republic of China.
  8. Yue-Peng Tian: Department of Hepatobiliary Surgery, Zhangjiajie People's Hospital, No.192 Guyong Road, Yongding District, Zhangjiajie, 427000, Hunan Province, People's Republic of China.
  9. Xiao-Hua Fu: Department of Hepatobiliary Surgery, Zhangjiajie People's Hospital, No.192 Guyong Road, Yongding District, Zhangjiajie, 427000, Hunan Province, People's Republic of China.

Abstract

Cholangiocarcinoma (CCA) is a malignant tumour with high recurrence and mortality rates and poor prognosis. However, the pathogenic mechanism remains unclear. In the present study, we aimed to investigate the roles and regulatory mechanism of SNHG16 in the occurrence and development of CCA. Gene Expression Profiling Interactive Analysis (GEPIA) was used to predict the expressions of SNHG16 and GATA6 in CCA samples from TCGA database. The levels of SNHG16, miR-146a-5p and GATA6 were evaluated using qRT-PCR. CCK-8 and flow cytometry assays were conducted to evaluate cell proliferation and apoptosis, respectively. Western blotting was applied to analyse the protein levels of GATA6 and apoptosis-related proteins. SNHG16 was significantly elevated in CCA tissues from TCGA database and CCA cell lines. Moreover, downregulation of SNHG16 restricted cell proliferation and increased apoptotic rate of RBE and HuCCT1 cells. miR-146a-5p, a downstream target of SNHG16, was shown to be an intermediate mediator of GATA6 expression regulated by SNHG16. In addition, either the miR-146a-5p inhibitor or overexpression of GATA6 obviously impaired the regulatory effects of SNHG16 downregulation in RBE and HuCCT1 cells. These data demonstrated that SNHG16 promoted cell proliferation and repressed apoptosis by regulating the miR-146a-5p/GATA6 axis, which provides some helpful insights for the diagnosis and treatment of CCA.

Keywords

References

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Grants

  1. CB2019152/the Scientific Research Plan of Hunan Provincial Health Commission

MeSH Term

Apoptosis
Bile Duct Neoplasms
Biomarkers, Tumor
Cell Movement
Cell Proliferation
Cholangiocarcinoma
GATA6 Transcription Factor
Gene Expression Regulation, Neoplastic
Humans
MicroRNAs
Prognosis
RNA, Long Noncoding
Tumor Cells, Cultured

Chemicals

Biomarkers, Tumor
GATA6 Transcription Factor
GATA6 protein, human
MIRN146 microRNA, human
MicroRNAs
RNA, Long Noncoding
SNHG16 lncRNA, human

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