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CD24 regulates stemness and the epithelial to mesenchymal transition through modulation of Notch1 mRNA stability by

Juyeon Lim1, Kyung-min Lee1, Jaekyung Shim2

  • 1Department of Life Science, Hanyang University, Seoul 133-791, Republic of Korea.

Archives of Biochemistry and Biophysics
|July 1, 2014
PubMed

Insights

CD24 knockdown reduces Notch1 expression in breast cancer cells. This pathway regulates cell migration, invasion, and stemness, suggesting CD24 influences epithelial-mesenchymal transition via Notch1 signaling.

Area of Science:

  • Molecular Biology
  • Cancer Research
  • Cell Biology

Background:

  • CD24 is implicated in various cancers, but its precise role in breast cancer progression remains under investigation.
  • Notch1 signaling is crucial for cell fate determination and has been linked to epithelial-mesenchymal transition (EMT) and cancer stemness.

Purpose of the Study:

  • To elucidate the regulatory relationship between CD24 and Notch1 signaling in breast cancer.
  • To investigate the role of the CD24-Notch1 axis in mediating key cancer cell behaviors such as migration, invasion, and drug resistance.

Main Methods:

  • Utilized CD24 knockdown in MCF-7 breast cancer cells.
  • Assessed Notch1 expression levels and mRNA stability.
  • Evaluated the impact of CD24 and Notch1 on cell migration, invasion, mammosphere formation, and drug resistance.

Main Results:

  • CD24 knockdown led to decreased Notch1 expression in MCF-7 cells.
  • The p38MAPK pathway was identified as a regulator of Notch1 mRNA stability downstream of CD24.
  • CD24-mediated cell migration, invasion, mammosphere formation, and drug resistance were found to be regulated by Notch1.

Conclusions:

  • CD24 plays a significant role in breast cancer progression.
  • The CD24-Notch1 signaling pathway is a key regulator of epithelial-mesenchymal transition and stemness in breast cancer cells.
  • Targeting the CD24-Notch1 axis may offer therapeutic strategies for breast cancer treatment.
Keywords:
Breast cancerCD24CSCEMTNotch1

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