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KLF7 enhances the invasion and migration of colorectal cancer cells via the miR-139-5p/TPD52 axis

  • 0Department of External Medicine, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China.
Cancer Biology & Therapy +

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August 4, 2024

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August 4, 2024

View abstract on PubMed

Summary

This summary is machine-generated.

Krüppel-like factor 7 (KLF7) promotes colorectal cancer (CRC) invasion and migration by suppressing miR-139-5p, leading to increased tumor protein D52 (TPD52) expression. Silencing KLF7 inhibits CRC progression and tumor growth.

Area Of Science

  • Oncology
  • Molecular Biology
  • Genetics

Background

  • Colorectal cancer (CRC) remains a significant health challenge with complex molecular drivers.
  • Understanding the regulatory mechanisms of CRC cell invasion and migration is crucial for developing effective therapies.

Purpose Of The Study

  • To elucidate the molecular role of Krüppel-like factor 7 (KLF7) in colorectal cancer (CRC) cell invasion and migration.
  • To investigate the regulatory pathway involving KLF7, miR-139-5p, and tumor protein D52 (TPD52) in CRC.

Main Methods

  • Analysis of KLF7 expression in CRC tissues and correlation with clinical parameters.
  • In vitro studies using CRC cell lines with KLF7 silencing (si-KLF7) to assess cell viability, invasion, and migration.
  • Molecular assays including qRT-PCR, Western blot, Chromatin Immunoprecipitation (ChIP), and dual-luciferase reporter assays.
  • In vivo subcutaneous tumorigenesis experiments in a mouse model.

Main Results

  • KLF7 is highly expressed in CRC cells and its silencing inhibits cell viability, invasion, and migration.
  • KLF7 directly represses miR-139-5p expression by binding to its promoter.
  • miR-139-5p targets and downregulates TPD52 expression.
  • KLF7 silencing suppressed tumor growth in vivo, and miR-139-5p inhibition or TPD52 overexpression partially reversed these effects.

Conclusions

  • KLF7 promotes CRC cell invasion and migration by suppressing miR-139-5p, consequently upregulating TPD52 expression.
  • Targeting the KLF7/miR-139-5p/TPD52 axis presents a potential therapeutic strategy for colorectal cancer.

Keywords:

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