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Colchicine-induced apoptosis in human normal liver L-02 cells by mitochondrial mediated pathways

Xue-mei Chen1, Jun Liu, Tao Wang

  • 1New Drug Screening Center, China Pharmaceutical University, Nanjing 210009, Jiangsu, China.

Toxicology in Vitro : an International Journal Published in Association with BIBRA
|February 21, 2012
PubMed

Insights

Colchicine induces apoptosis in liver cells by activating the intrinsic pathway. This study clarifies colchicine

Area of Science:

  • Cell Biology
  • Pharmacology
  • Biochemistry

Background:

  • Colchicine, an alkaloid, is used for gout and shows anti-cancer potential.
  • Its role in cancer apoptosis, particularly the underlying pathways, requires further elucidation.
  • Previous studies suggest caspase-3 activation, but detailed mechanisms remain unclear.

Purpose of the Study:

  • To investigate the effect of colchicine on apoptosis in human normal liver cells (L-02).
  • To identify the specific apoptosis-associated signaling pathways involved in colchicine's action.

Main Methods:

  • Cell viability assays
  • Annexin V/propidium iodide binding assays
  • PI staining, Hoechst 33342 staining
  • Mitochondrial membrane potential assessment
  • Caspase activity assays
  • Western blot analysis

Main Results:

  • Colchicine caused a dose-dependent decrease in L-02 cell viability.
  • Early apoptosis was observed at 0.1μM colchicine.
  • Colchicine induced loss of mitochondrial membrane potential, activated caspases-3 and 9, upregulated Bax, and downregulated Bcl-2.

Conclusions:

  • Colchicine induces apoptosis in L-02 cells.
  • Evidence supports colchicine acting via the intrinsic apoptotic pathway.
  • This study provides insights into colchicine's mechanism of action in liver cells.

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