CYP4Z1 3'UTR represses migration of human breast cancer cells

Bingyu Wang1, Lufeng Zheng1, Jinjiang Chou1

  • 1School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, People's Republic of China; Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, People's Republic of China.

Insights

The CYP4Z1 3'UTR suppresses breast cancer cell migration and epithelial-mesenchymal transition (EMT). It acts as a ceRNA for E-cadherin, offering a potential therapeutic target for breast cancer treatment.

Area of Science:

  • Molecular Biology
  • Cancer Research
  • Genetics

Background:

  • Breast cancer cell migration and epithelial-mesenchymal transition (EMT) are critical processes in tumor progression and metastasis.
  • The role of CYP4Z1 3' untranslated region (3'UTR) in regulating these processes remains largely unexplored.
  • Understanding the molecular mechanisms underlying breast cancer metastasis is crucial for developing effective therapeutic strategies.

Purpose of the Study:

  • To investigate the functional role of CYP4Z1 3'UTR in breast cancer cell migration and EMT.
  • To elucidate the molecular mechanisms by which CYP4Z1 3'UTR influences EMT-related protein expression.
  • To identify potential regulatory interactions between CYP4Z1 3'UTR, microRNAs, and key cancer-associated genes.

Main Methods:

  • Overexpression of CYP4Z1 3'UTR in MCF-7 and MDA-MB-231 breast cancer cell lines.
  • Cell migration and adhesion assays.
  • Western blot analysis for EMT-related proteins (Vimentin, MMP-2, MMP-9, E-cadherin).
  • Luciferase reporter assays and quantitative real-time PCR (qRT-PCR) to assess miRNA targeting.
  • Analysis of CYP4Z1 3'UTR as a competing endogenous RNA (ceRNA).

Main Results:

  • Overexpression of CYP4Z1 3'UTR significantly suppressed migration and adhesion of breast cancer cells.
  • CYP4Z1 3'UTR modulated EMT by down-regulating mesenchymal markers (Vimentin, MMP-2, MMP-9) and up-regulating epithelial marker (E-cadherin).
  • Luciferase and qRT-PCR assays confirmed miR-9 as a targeting miRNA for CYP4Z1 3'UTR, and CYP4Z1 3'UTR repressed E-cadherin expression in a miRNA-dependent manner.

Conclusions:

  • CYP4Z1 3'UTR acts as a suppressor of breast cancer cell migration and EMT.
  • The mechanism involves CYP4Z1 3'UTR functioning as a ceRNA for E-cadherin, potentially mediated by miR-9.
  • These findings highlight a novel regulatory pathway linking CYP4Z1 and E-cadherin, suggesting therapeutic potential for targeting CYP4Z1 3'UTR in breast cancer treatment.

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