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Kurarinone targets JAK2-STAT3 signaling in colon cancer-stem-like cells

Kumari Sunita Prajapati1, Shashank Kumar1

  • 1Molecular Signaling & Drug Discovery Laboratory, Department of Biochemistry, Central University of Punjab, Bathinda, Punjab, India.

Cell Biochemistry and Function
|February 23, 2024
PubMed

Insights

Kurarinone (KU) effectively targets colon cancer stem-like cells by reducing self-renewal and inducing apoptosis. This natural compound inhibits the CD44-JAK2-STAT3 pathway, offering a novel therapeutic strategy for colon cancer.

Area of Science:

  • Molecular Biology
  • Cancer Research
  • Pharmacology

Background:

  • Natural compounds can modulate colon cancer stem cell properties.
  • The anti-cancer potential of Kurarinone (KU) against colon cancer stem-like cells remains largely unexplored.
  • Understanding the molecular mechanisms is crucial for developing targeted therapies.

Purpose of the Study:

  • To investigate the potential of Kurarinone (KU) in targeting colon cancer stem-like cells.
  • To elucidate the underlying molecular mechanisms of KU's action.
  • To evaluate KU's effects on stemness markers, cell cycle, apoptosis, and the JAK2-STAT3 pathway.

Main Methods:

  • Cytotoxicity assays were performed on colon cancer cells (HCT-116).
  • Colonosphere formation assays assessed spheroid reduction potential.
  • Quantitative real-time PCR (qRT-PCR), Western blot, and flow cytometry analyzed marker expression, cell cycle, apoptosis, and protein translocation (pSTAT3).

Main Results:

  • KU significantly reduced HCT-116 cell proliferation and colonosphere formation.
  • KU dose-dependently decreased stemness markers (CD44, c-Myc, Bmi-1, Sox2) and inhibited the JAK2-STAT3 pathway by reducing pSTAT3.
  • KU induced G1-phase cell cycle arrest and promoted apoptosis by increasing the Bax/Bcl-2 ratio and activating caspase 3 and PARP-1.

Conclusions:

  • Kurarinone (KU) effectively reduces stemness and self-renewal properties in colon cancer stem-like cells.
  • KU induces cell cycle arrest and apoptosis in HCT-116 cells and colonospheres.
  • The mechanism involves the downregulation of the CD44-JAK2-STAT3 signaling axis, suggesting KU as a potential therapeutic agent for colon cancer.
Keywords:
JAK/STAT pathwayKurarinonecolon cancercolon cancer stem cellflavonoidphytochemical

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