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Identification of Intracellular Signaling Events Induced in Viable Cells by Interaction with Neighboring Cells Undergoing Apoptotic Cell Death
09:18

Identification of Intracellular Signaling Events Induced in Viable Cells by Interaction with Neighboring Cells Undergoing Apoptotic Cell Death

Published on: December 27, 2016

[Effect of melittin on apoptosis and necrosis of U2 OS cells]

Yong-Qiang Chen1, Zhen-An Zhu, Yong-Qiang Hao

  • 1Department of Orthopaedics, Shanghai Ninth People's Hospital, Shanghai Second Medical University, Shanghai 200011, China. YQCHEN116@hotmail.com

Zhong Xi Yi Jie He Xue Bao = Journal of Chinese Integrative Medicine
|September 2, 2004
PubMed
Abstract

Insights

Melittin effectively inhibits osteosarcoma cell proliferation and induces apoptosis in vitro. This bee venom component up-regulates Fas expression, offering potential therapeutic insights for bone cancer treatment.

Area of Science:

  • Biochemistry
  • Cell Biology
  • Oncology

Background:

  • Osteosarcoma is a primary bone malignancy with limited treatment options.
  • Melittin, a peptide from bee venom, exhibits diverse biological activities.

Purpose of the Study:

  • To investigate the in vitro effects of melittin on osteosarcoma cell line U2 OS.
  • To determine melittin's impact on apoptosis and necrosis in U2 OS cells.

Main Methods:

  • U2 OS cells were treated with varying concentrations of melittin.
  • Cell proliferation assessed via MTT assay and cell counting.
  • Necrosis evaluated using Trypan blue staining.
  • Apoptosis, Fas, and Apo2.7 expression analyzed by flow cytometry.

Main Results:

  • Melittin demonstrated dose-dependent inhibition of U2 OS cell proliferation at 16 and 64 mg/L.
  • Treatment with melittin (16 and 32 mg/L) significantly increased apoptosis.
  • Fas and Apo2.7 positive cell percentages were elevated following melittin treatment.

Conclusions:

  • Melittin inhibits osteosarcoma cell proliferation.
  • Melittin induces apoptosis in osteosarcoma cells.
  • Upregulation of Fas expression is a key mechanism by which melittin exerts its anti-cancer effects.

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