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[Apoptosis induced by cantharidin in human pulmonary carcinoma cells A549 and its molecular mechanisms]

Wei-dong Zhang1, Hui-ru Zhao, Ying Yan

  • 1Department of Thoracic surgery, First Affiliated Hospital, China Medical University, Shenyang 110001, China. wdzhangdocter_62@eyou.com

Zhonghua Zhong Liu Za Zhi [Chinese Journal of Oncology]
|August 25, 2005
PubMed
Abstract

Insights

Cantharidin induces apoptosis in human lung cancer cells (A549) by inhibiting proliferation and altering key protein expressions. This study reveals its potential as an anti-cancer agent.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Biology

Background:

  • Lung cancer remains a leading cause of cancer-related mortality worldwide.
  • Identifying novel therapeutic agents with apoptosis-inducing properties is crucial for effective lung cancer treatment.

Purpose of the Study:

  • To investigate the apoptosis-inducing effects of cantharidin on A549 human lung cancer cells.
  • To elucidate the underlying molecular mechanisms of cantharidin-induced apoptosis.

Main Methods:

  • Cell proliferation was assessed using MTT assays.
  • Apoptosis was detected via light/electron microscopy, FACScan, Annexin V-FITC staining, and DNA gel electrophoresis.
  • Protein expression levels of bcl-2, Bax, and survivin were analyzed using Western blot.

Main Results:

  • Cantharidin significantly inhibited A549 cell proliferation.
  • Morphological and flow cytometry analyses confirmed cantharidin-induced apoptosis, evidenced by hypodiploid peaks and DNA fragmentation.
  • Western blot analysis revealed increased Bax expression and decreased bcl-2 and survivin expression.

Conclusions:

  • Cantharidin effectively induces apoptosis in A549 human lung cancer cells.
  • The mechanism involves the modulation of Bax, bcl-2, and survivin protein expression.
  • Cantharidin shows promise as a potential therapeutic agent for lung cancer.

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