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Monitoring Cleaved Caspase-3 Activity and Apoptosis of Immortalized Oligodendroglial Cells using Live-cell Imaging and Cleaveable Fluorogenic-dye Substrates Following Potassium-induced Membrane Depolarization
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Embelin induces apoptosis in human glioma cells through inactivating NF-κB

Sang-Yoon Park1, Sung-Lyul Lim, Hyeung-Jin Jang

  • 1Department of Science in Korean Medicine, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea.

Journal of Pharmacological Sciences
|March 22, 2013
PubMed

Insights

Embelin, a natural compound, effectively inhibits glioma cell proliferation and induces apoptosis by targeting NF-κB signaling. This study highlights embelin as a potential novel therapeutic for malignant glioma.

Area of Science:

  • Oncology
  • Molecular Biology
  • Pharmacology

Background:

  • Malignant glioma is characterized by aggressive tumor growth and invasion.
  • Embelin, derived from Embelia ribes, is known for anti-inflammatory and anti-cancer properties and acts as a novel XIAP inhibitor.
  • The therapeutic potential of embelin in glioma remains to be fully elucidated.

Purpose of the Study:

  • To investigate the therapeutic effect of embelin on human glioma cells.
  • To determine the mechanism by which embelin exerts its anti-glioma effects.

Main Methods:

  • Assessing embelin's effect on human glioma cell proliferation versus normal astrocytes.
  • Investigating embelin's impact on apoptosis and NF-κB signaling pathway components (p65, IκBα).
  • Evaluating the role of p65 in embelin-induced apoptosis.

Main Results:

  • Embelin suppressed proliferation in human glioma cells but not in normal astrocytes.
  • Embelin induced apoptosis in glioma cells by inhibiting NF-κB signaling.
  • Embelin inhibited NF-κB activity by reducing p65 nuclear translocation via IκBα phosphorylation and degradation, independent of XIAP inhibition.
  • Overexpression of p65 attenuated embelin-induced apoptosis.

Conclusions:

  • Embelin demonstrates potent anti-glioma activity by inhibiting cell proliferation and inducing apoptosis.
  • The therapeutic mechanism involves the inhibition of NF-κB signaling pathway.
  • Embelin represents a promising novel therapeutic candidate for glioma treatment.

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