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The long noncoding RNA colon cancer-associated transcript-1/miR-490 axis regulates gastric cancer cell migration by

Baoguo Zhou1, Yuli Wang1, Jinpeng Jiang1

  • 1Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China.

IUBMB Life
|January 31, 2016
PubMed

Insights

Colon cancer-associated transcript-1 (CCAT1) regulates miR-490 in gastric cancer (GC) cells, promoting tumor cell migration. This CCAT1/miR-490/hnRNPA1 axis presents potential diagnostic and therapeutic targets for GC.

Area of Science:

  • Oncology
  • Molecular Biology
  • Gene Regulation

Background:

  • Colon cancer-associated transcript-1 (CCAT1) is a long noncoding RNA implicated in various cancers.
  • Its specific role and regulation in gastric carcinoma (GC) remain largely unclear.

Purpose of the Study:

  • To investigate the regulatory relationship between CCAT1 and miR-490 in GC.
  • To elucidate the functional impact of this interaction on GC cell migration.

Main Methods:

  • Expression analysis of CCAT1 and miR-490 in GC cell lines and tissues.
  • Luciferase reporter assays to confirm the binding site and regulatory interaction.
  • Cell migration assays following CCAT1 or miR-490 manipulation.
  • Analysis of hnRNPA1 expression and its correlation with CCAT1 and miR-490.

Main Results:

  • CCAT1 was significantly upregulated, while miR-490 was downregulated in GC.
  • CCAT1 and miR-490 exhibited a negative correlation in GC tissues.
  • miR-490 directly targeted CCAT1 and suppressed GC cell migration.
  • miR-490 also repressed hnRNPA1 translation, and hnRNPA1 was upregulated in GC.
  • Inhibition of miR-490 reversed CCAT1 siRNA-induced suppression of cell migration.

Conclusions:

  • The CCAT1/miR-490/hnRNPA1 axis promotes gastric cancer cell migration.
  • This axis represents a potential diagnostic biomarker and therapeutic target for GC.
Keywords:
gastric cancerhnRNPA1lncRNA CCAT1/miR-490

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