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circSLC30A7 Inhibits Hepatocellular Carcinoma Cell Proliferation via the miR-767-5p/FBXW7/NOTCH1 Axis

Xiaotian Yu1,2, Yun Zhang2, Chao Jiang2

  • 1Liver Transplantation Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.

Journal of Oncology
|October 22, 2021
PubMed

Insights

Circular RNA SLC30A7 (circSLC30A7) acts as a tumor suppressor in hepatocellular carcinoma (HCC). It inhibits cancer growth by regulating the miR-767-5p/FBXW7/NOTCH1 pathway, suggesting its potential as an HCC biomarker.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Circular RNAs (circRNAs) are noncoding RNAs implicated in human tumor research.
  • circRNAs regulate cancer development, often by acting as microRNA sponges.
  • Hepatocellular carcinoma (HCC) is a significant global health concern.

Purpose of the Study:

  • To investigate the molecular mechanism of circSLC30A7 in hepatocellular carcinoma (HCC).
  • To determine the role of circSLC30A7 as a potential tumor suppressor in HCC.

Main Methods:

  • Quantitative real-time PCR to assess circRNA expression in HCC cell lines and tissues.
  • Gain- and loss-of-function experiments to evaluate the biological impact of circSLC30A7.
  • MicroRNA target prediction and validation to elucidate the molecular interactions.

Main Results:

  • circSLC30A7 expression was significantly downregulated in HCC cell lines and tissues.
  • circSLC30A7 overexpression suppressed HCC cell proliferation and migration.
  • circSLC30A7 functioned as a sponge for miR-767-5p, inhibiting FBXW7 expression.
  • The miR-767-5p/FBXW7/NOTCH1 axis was identified as the downstream pathway regulated by circSLC30A7.

Conclusions:

  • circSLC30A7 acts as a tumor suppressor in HCC by inhibiting tumorigenesis via the miR-767-5p/FBXW7/NOTCH1 axis.
  • circSLC30A7 reduces HCC malignancy and holds potential as a diagnostic and prognostic biomarker for HCC management.

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