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Effect of down-regulated transcriptional repressor ZEB1 on the epithelial-mesenchymal transition of ovarian cancer

Dengyu Chen1, Jing Wang, Yunxia Zhang

  • 1*Department of Pathogenic Biology and Immunology of Medical College, Southeast University, Nanjing, China; †Department of Microbiology, Bengbu Medical School, Bengbu, PR China; and ‡Department of Gynecology and Obstetrics, Zhongda Hospital, Medical School, Southeast University, Nanjing, PR China.

International Journal of Gynecological Cancer : Official Journal of the International Gynecological Cancer Society
|November 22, 2013
PubMed
Abstract

Insights

Down-regulating zinc-finger E-box-binding homeobox 1 (ZEB1) in ovarian cancer cells inhibits metastasis and tumor growth. This approach, targeting ZEB1, shows promise for future clinical applications in treating epithelial ovarian cancer.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Metastasis Research

Background:

  • Epithelial ovarian cancer (EOC) metastasis remains a primary cause of patient mortality.
  • The molecular mechanisms driving EOC metastasis are not fully understood.
  • Targeting key regulators of epithelial-mesenchymal transition (EMT) is crucial for EOC treatment.

Purpose of the Study:

  • To investigate the impact of down-regulating zinc-finger E-box-binding homeobox 1 (ZEB1) on EMT in human ovarian cancer cells.
  • To evaluate the in vitro and in vivo effects of ZEB1 suppression on ovarian cancer cell behavior.

Main Methods:

  • Human ovarian cancer cell lines (SKOV3, HO8910) were transfected with small hairpin RNA (shRNA) targeting ZEB1.
  • Stable cell lines (shZEB1) were selected and assessed using colony-forming, wound-healing, and migration assays.
  • Tumorigenicity of ZEB1-downregulated cells was evaluated in a mouse xenograft model.

Main Results:

  • Down-regulation of ZEB1 expression reduced cell migration and epithelial-mesenchymal transition (EMT) in ovarian cancer cells.
  • ZEB1 suppression enhanced miR-200c expression, a known tumor suppressor.
  • Reduced ZEB1 levels significantly decreased tumor growth in vivo and inhibited metastasis.

Conclusions:

  • Down-regulating ZEB1 expression effectively inhibits ovarian cancer cell metastasis and growth.
  • The ZEB1/miR-200c axis plays a critical role in regulating EMT and metastasis in ovarian cancer.
  • Targeting ZEB1 represents a potential therapeutic strategy for epithelial ovarian cancer, warranting further clinical investigation.

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