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IncRNA EPB41L4A-AS1 Mitigates the Proliferation of Non-Small-Cell Lung Cancer Cells through the miR-105-5p/GIMAP6

Bingwei Dong1, Fenjuan Zhang1, Weibo Zhang1

  • 1Department of Pathology, Xianyang Central Hospital, Xianyang City, 712000 Shaanxi Province, China.

Critical Reviews in Eukaryotic Gene Expression
|February 3, 2023
PubMed

Insights

Long non-coding RNA EPB41L4A-AS1 (lncRNA EPB41L4A-AS1) is downregulated in non-small-cell lung cancer (NSCLC). Overexpression of lncRNA EPB41L4A-AS1 inhibits NSCLC cell proliferation by regulating the miR-105-5p/GIMAP6 axis.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Non-small-cell lung cancer (NSCLC) is the predominant form of lung cancer.
  • Long non-coding RNAs (lncRNAs), microRNAs (miRNAs), and proteins play critical roles in NSCLC pathogenesis.
  • Understanding the specific roles of these molecules is crucial for developing novel therapeutic strategies.

Purpose of the Study:

  • To investigate the function of lncRNA EPB41L4A-AS1 in NSCLC cell proliferation.
  • To elucidate the molecular mechanism involving lncRNA EPB41L4A-AS1, miR-105-5p, and GIMAP6 in NSCLC.
  • To provide a theoretical basis for NSCLC treatment.

Main Methods:

  • Quantitative real-time PCR (RT-qPCR) to measure lncRNA EPB41L4A-AS1, miR-105-5p, and GIMAP6 levels.
  • Cell counting kit-8 and colony formation assays to assess cell proliferation.
  • Dual-luciferase reporter and RNA pull-down assays to determine molecular interactions.
  • Subcellular fractionation and functional rescue experiments.

Main Results:

  • lncRNA EPB41L4A-AS1 and GIMAP6 were downregulated, while miR-105-5p was upregulated in NSCLC tissues and cells.
  • lncRNA EPB41L4A-AS1 expression correlated with tumor size and clinical stage.
  • lncRNA EPB41L4A-AS1 suppressed NSCLC cell proliferation by sponging miR-105-5p, thereby promoting GIMAP6 transcription.

Conclusions:

  • lncRNA EPB41L4A-AS1 acts as a tumor suppressor in NSCLC.
  • The lncRNA EPB41L4A-AS1/miR-105-5p/GIMAP6 axis is a key regulatory pathway in NSCLC proliferation.
  • Targeting this axis may offer a novel therapeutic approach for NSCLC.

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