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Long non-coding RNA CASC2 regulates cell biological behaviour through the MAPK signalling pathway in hepatocellular

Yuanyuan Gan1, Nana Han1, Xiaoqin He1

  • 11 Cancer Center, Renmin Hospital of Wuhan University, Wuhan, China.

Tumour Biology : the Journal of the International Society for Oncodevelopmental Biology and Medicine
|June 17, 2017
PubMed

Insights

The long non-coding RNA CASC2 is downregulated in hepatocellular carcinoma. Overexpressing CASC2 suppresses tumor growth and invasion, suggesting it as a potential therapeutic target for liver cancer.

Area of Science:

  • Molecular Biology
  • Oncology
  • Genetics

Background:

  • Long non-coding RNAs (lncRNAs) are crucial regulators in human diseases, particularly cancer.
  • The specific roles of lncRNAs in hepatocellular carcinoma (HCC) require further investigation.
  • CASC2 (cancer susceptibility candidate 2) is a known tumor suppressor in other cancers, but its function in HCC is unelucidated.

Purpose of the Study:

  • To investigate the expression and function of CASC2 in hepatocellular carcinoma.
  • To determine the molecular mechanisms underlying CASC2's role in HCC progression.

Main Methods:

  • Quantitative real-time polymerase chain reaction (qRT-PCR) was used to assess CASC2 expression levels.
  • In vitro cell culture experiments were performed to evaluate the effects of CASC2 overexpression on HCC cell behavior.
  • The mitogen-activated protein kinase (MAPK) signaling pathway was analyzed to understand the underlying molecular mechanisms.

Main Results:

  • CASC2 expression was significantly downregulated in 62% of HCC cases and HCC cell lines compared to adjacent normal tissues.
  • Overexpression of CASC2 inhibited HCC cell proliferation, migration, and invasion.
  • CASC2 overexpression promoted apoptosis in HCC cells by inactivating the MAPK signaling pathway.

Conclusions:

  • CASC2 functions as a tumor suppressor in hepatocellular carcinoma.
  • CASC2 downregulation is a common event in HCC.
  • CASC2 represents a potential therapeutic target for liver cancer treatment.
Keywords:
Long non-coding RNAcancer susceptibility candidate 2hepatocellular carcinomamitogen-activated protein kinase

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