Silymarin suppresses HepG2 hepatocarcinoma cell progression through downregulation of Slit-2/Robo-1 pathway

Nuriye Ezgi Bektur Aykanat1, Sedat Kacar2, Serife Karakaya2

  • 1Department of Histology and Embryology, Faculty of Medicine, Eskisehir Osmangazi University, Eskisehir, Turkey. nebektur@ogu.edu.tr.

Abstract

Insights

Silymarin, derived from milk thistle, demonstrated anti-cancer effects on liver cancer cells. It induced apoptosis and affected metastasis-related proteins, suggesting therapeutic potential.

Area of Science:

  • Oncology
  • Pharmacology
  • Cell Biology

Background:

  • Hepatocellular carcinoma (HCC) is a major cause of cancer mortality worldwide.
  • Silybum marianum (milk thistle) contains silymarin, traditionally used for liver ailments.
  • Silymarin exhibits antioxidant, anti-inflammatory, and anti-cancer properties.

Purpose of the Study:

  • To investigate silymarin's effects on HepG2 hepatocellular carcinoma cells.
  • To analyze silymarin's impact on the Slit-2/Robo-1 signaling pathway.
  • To evaluate silymarin's influence on CXCR-4 expression, a key metastasis marker.

Main Methods:

  • HepG2 cells were treated with varying silymarin doses.
  • Hematoxylin and eosin staining assessed cellular effects.
  • Immunoblotting and immunocytochemistry analyzed Slit-2/Robo-1 and CXCR4 protein levels and localization.

Main Results:

  • Silymarin induced apoptosis in HepG2 cells in a dose-dependent manner.
  • Silymarin decreased CXCR-4 protein levels dose-dependently.
  • Silymarin modulated Slit-2/Robo-1 protein levels, decreasing them at low doses and increasing them at high doses.

Conclusions:

  • Silymarin exhibits dose-dependent anti-carcinogenic and anti-metastatic effects on HepG2 cells.
  • The Slit-2/Robo-1 pathway is implicated in silymarin's anti-cancer activity.
  • Silymarin promotes apoptosis in liver cancer cells via modulation of key signaling pathways.

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