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Evodiamine induced human melanoma A375-S2 cell death partially through interleukin 1 mediated pathway

Che Wang1, Min-wei Wang, Shin-ichi Tashiro

  • 1China-Japan Research Institute of Medical and Pharmaceutical Sciences, Shenyang Pharmaceutical University, China.

Biological & Pharmaceutical Bulletin
|June 3, 2005
PubMed

Insights

Evodiamine induces melanoma cell death via a caspase cascade and MAPK signaling. Interleukin-1 receptor antagonist (IL-1Ra) blocks this process by inhibiting Fas-ligand expression and downstream signaling pathways.

Area of Science:

  • Cell Biology
  • Pharmacology
  • Immunology

Background:

  • Evodiamine has been shown to induce apoptosis in A375-S2 melanoma cells.
  • This cell death involves caspase cascades, Bax/Bcl-2 regulation, and MAPK signaling pathways.

Purpose of the Study:

  • To investigate the role of interleukin-1 (IL-1) in evodiamine-induced melanoma cell death.
  • To elucidate the specific molecular mechanisms by which IL-1 contributes to this process.

Main Methods:

  • Treatment of A375-S2 melanoma cells with evodiamine and IL-1 receptor antagonist (IL-1Ra).
  • Assessment of cell viability, TUNEL staining, Western blotting for caspase cleavage, p53 activation, Bax/Bcl-2 ratio, and MAPK phosphorylation (p38 MAPK, ERK).

Main Results:

  • IL-1Ra pretreatment rescued cell viability and reduced TUNEL-positive cells induced by evodiamine.
  • IL-1Ra attenuated evodiamine-induced Fas-ligand expression, procaspase cleavage, DNA degradation, p53 activation, and altered Bax/Bcl-2 ratio.
  • IL-1Ra inhibited p38 MAPK phosphorylation but did not affect ERK inactivation.

Conclusions:

  • IL-1 signaling is involved in evodiamine-induced melanoma cell death.
  • Increased Fas-ligand expression via the IL-1 mediated pathway is an early event in evodiamine-induced cell death.
  • Evodiamine may target the IL-1-induced death cascade in melanoma cells.

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