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Related Concept Videos

Cancer Stem Cells and Tumor Maintenance02:40

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Early diagnosis and treatment can often cure cancer. However, even with treatment, residual cells called cancer stem cells (CSC) might remain, often causing tumor recurrence. These cancer stem cells possess the potential for self-renewal and multi-lineage differentiation and are often responsible for the therapeutic resistance displayed in most cancers.
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
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Decrease of ZEB1 expression inhibits the B16F10 cancer stem-like properties.

Fengshu Zhao1, Xiangfeng He, Yaqing Wang

  • 1Department of Pathogenic Biology and Immunology, School of Medicine, Southeast University.

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|November 13, 2015
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Reducing Zinc-finger E-box binding homeobox 1 (ZEB1) in melanoma cancer stem cells (CSCs) significantly inhibits tumor growth and metastasis. This study highlights ZEB1 as a potential therapeutic target for malignant melanoma.

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Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Stem Cell Research

Background:

  • Cancer stem cells (CSCs) drive tumor initiation and progression.
  • Zinc-finger E-box binding homeobox 1 (ZEB1) is a transcription factor crucial for maintaining CSC properties and tumor advancement.

Purpose of the Study:

  • To investigate the impact of reducing ZEB1 expression on the CSC-like characteristics of B16F10 melanoma cells.
  • To evaluate ZEB1 as a potential therapeutic target for malignant melanoma.

Main Methods:

  • Melanoma B16F10 cells were transfected with shRNA targeting ZEB1.
  • CRISPR-Cas9 technology was used to isolate shZEB1-CD133(+)CD44(+) CSCs.
  • CSC-like properties, including clonogenicity, proliferation, migration, invasion, and tumorigenicity, were systematically analyzed.
  • Changes in vimentin, N-cadherin, and E-cadherin expression were assessed in tumor tissues.

Main Results:

  • Decreased ZEB1 expression in B16F10 CSCs significantly reduced clonogenicity, proliferation, migration, and invasion.
  • Tumorigenicity and lung metastasis were notably inhibited in mice injected with shZEB1-B16F10 CSCs compared to controls.
  • ZEB1 downregulation led to decreased vimentin and N-cadherin, and increased E-cadherin expression in tumor tissues.

Conclusions:

  • ZEB1 expression is closely associated with the maintenance of CSC-like properties in B16F10 melanoma.
  • Reducing ZEB1 effectively suppresses melanoma CSC behavior and metastasis.
  • ZEB1 represents a promising therapeutic target for treating malignant melanoma.