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miR-143 Inhibits Cell Proliferation of Gastric Cancer Cells Through Targeting GATA6

Mao Guoping1, Liu Ran2, Qin Yanru1

  • 1Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, P.R. China.

Oncology Research
|January 12, 2018
PubMed

Insights

MicroRNAs (miRNAs) are implicated in gastric cancer (GC) progression. This study shows miR-143 suppresses GC by downregulating GATA6, suggesting miR-143 as a potential therapeutic target for gastric cancer.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • MicroRNA (miRNA) dysregulation is linked to human cancer progression, including gastric cancer (GC).
  • Previous research indicated miR-143 acts as a tumor suppressor in GC, but its precise mechanism remains unclear.

Purpose of the Study:

  • To elucidate the molecular mechanism of miR-143 in gastric cancer progression.
  • To investigate the role of miR-143 and its potential targets in GC development.

Main Methods:

  • Quantitative real-time PCR to assess miR-143 expression in GC tissues and cell lines.
  • Luciferase reporter assay to identify direct targets of miR-143.
  • Cell proliferation assays and cell cycle analysis following miR-143 or GATA6 manipulation.

Main Results:

  • miR-143 expression was significantly downregulated in human GC tissues and cell lines.
  • Overexpression of miR-143 inhibited GC cell proliferation and induced G0/G1 cell cycle arrest.
  • GATA6 was identified as a direct target of miR-143, and its overexpression partially reversed miR-143's inhibitory effects on cell proliferation.

Conclusions:

  • miR-143 functions as a tumor suppressor in gastric cancer, partly by regulating GATA6 expression.
  • Targeting miR-143 presents a potential novel therapeutic strategy for gastric cancer treatment.

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