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MicroRNA-506 inhibits esophageal cancer cell proliferation via targeting CREB1

Wen-Jian Yao1, Yong-Lian Wang1, Jian-Guo Lu1

  • 1Department of Thoracic Surgery, The First Affiliated Hospital of Xinxiang Medical University Weihui 453100, China.

International Journal of Clinical and Experimental Pathology
|December 1, 2015
PubMed

Insights

MicroRNA-506 (miR-506) suppresses esophageal cancer by down-regulating the oncogene CREB1. This study reveals miR-506 as a potential therapeutic target for esophageal cancer treatment.

Area of Science:

  • Oncology
  • Molecular Biology
  • Gene Regulation

Background:

  • MicroRNAs (miRNAs) are crucial regulators in cancer development.
  • MicroRNA-506 (miR-506) is recognized as a tumor suppressor in several cancers.
  • The specific function of miR-506 in esophageal cancer is not well-defined.

Purpose of the Study:

  • To investigate the role and mechanism of miR-506 in esophageal cancer.
  • To determine the expression levels of miR-506 in esophageal cancer tissues and cell lines.
  • To identify potential targets of miR-506 in esophageal cancer.

Main Methods:

  • Quantitative real-time PCR (qRT-PCR) to assess miR-506 expression.
  • In vitro assays to evaluate the effect of miR-506 on esophageal cancer cell proliferation.
  • Western blot and luciferase reporter assays to analyze CREB1 expression and activity.

Main Results:

  • miR-506 was significantly downregulated in esophageal cancer tissues and cell lines.
  • Overexpression of miR-506 inhibited esophageal cancer cell proliferation, while inhibition of miR-506 promoted it.
  • miR-506 directly targeted and suppressed the expression and transcriptional activity of CREB1.
  • CREB1 was identified as a tumor oncogene promoting esophageal cancer cell proliferation.

Conclusions:

  • miR-506 acts as a tumor suppressor in esophageal cancer.
  • The tumor-suppressive function of miR-506 is mediated through the inhibition of CREB1.
  • miR-506 represents a potential therapeutic biomarker and target for esophageal cancer.
Keywords:
CAMP responsive element binding protein 1esophageal cancermiR-506proliferation

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