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PDZRN4-mediated colon cancer cell proliferation and dissemination is regulated by miR-221-3p

Xiaojian Liu1, Chungen Xing1

  • 1Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou 215004, China.

Translational Cancer Research
|February 4, 2022
PubMed
Abstract

Insights

PDZRN4 acts as a tumor suppressor in colon cancer, with its expression reduced by miR-221-3p. This microRNA dysregulation contributes to colon cancer development and progression.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • PDZRN4 (PDZ domain containing ring finger 4) expression is suppressed in colon cancer.
  • Elevated microRNA 221 (miR-221-3p) levels may contribute to PDZRN4 downregulation.
  • Understanding PDZRN4's role is crucial for identifying colon cancer treatment targets.

Purpose of the Study:

  • Investigate the role of PDZRN4 in colon cancer development.
  • Explore the regulatory relationship between miR-221-3p and PDZRN4.

Main Methods:

  • Analyzed PDZRN4 mRNA and protein levels in colon cancer versus normal tissues using RNA expression arrays.
  • Assessed the impact of PDZRN4 overexpression on HCT116 cell proliferation and dissemination.
  • Utilized bioinformatics and luciferase reporter assays to confirm the miR-221-3p and PDZRN4 interaction.

Main Results:

  • PDZRN4 mRNA and protein were significantly lower in colon cancer tissues.
  • Overexpression of PDZRN4 reduced HCT116 cell dissemination.
  • miR-221-3p directly inhibits PDZRN4 expression, and its knockout attenuated cell proliferation and dissemination.

Conclusions:

  • PDZRN4 functions as a tumor suppressor in colon cancer.
  • Downregulation of PDZRN4 in colon cancer is likely mediated by miR-221-3p.
  • This study offers novel insights into colon cancer pathogenesis and potential therapeutic strategies.
Keywords:
3'-untranslated region (3'-UTR)PDZ domain containing ring finger 4 (PDZRN4)colon cancermRNAmicroRNAproliferation

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