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Assessing Cell Viability and Death in 3D Spheroid Cultures of Cancer Cells
Published on: June 16, 2019
Diallylpolysulfides induce growth arrest and apoptosis
Corinna Busch1, Claus Jacob, Awais Anwar
1Medizinische Biochemie und Molekularbiologie, Universität des Saarlandes, D-66424 Homburg, Germany.
International Journal of Oncology
|February 4, 2010
Summary
Garlic compounds like diallyltetrasulfide show promise against colon cancer by inducing cell death. These organosulfur compounds trigger apoptosis in HCT116 cells, independent of p53, offering potential therapeutic strategies.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Organosulfur compounds from garlic, particularly diallylsulfides, are known for their protective effects against cancer.
- Understanding the specific mechanisms and efficacy of different diallylsulfide chain lengths is crucial for therapeutic development.
Purpose of the Study:
- To investigate the impact of chemically synthesized diallylsulfides (1-4 sulfur atoms) on HCT116 human colon cancer cells.
- To elucidate the role of these compounds in cell viability, cell cycle arrest, and apoptosis induction.
- To explore the underlying biochemical mechanisms, including reactive oxygen species (ROS) generation and p53 independence.
Main Methods:
- Treatment of HCT116 colon cancer cells with various diallylsulfides (mono-, di-, tri-, tetrasulfides) and control compounds.
- Assessment of cell viability, cell cycle progression, and apoptosis.
- Analysis of cellular redox state and the role of antioxidants.
- Evaluation of p53 status in relation to apoptosis induction.
- Measurement of cdc25C protein levels.
Main Results:
- Diallyltrisulfide and diallyltetrasulfide significantly reduced cell viability, induced cell cycle arrest, and promoted apoptosis in HCT116 cells.
- Propyl-analogues showed similar activity, while mono- and disulfides were less effective.
- Apoptosis induction was dependent on the cellular redox state, as evidenced by prevention with antioxidants.
- The p53 tumor suppressor protein was dispensable for sulfide-induced apoptosis.
- Growth arrest and apoptosis were correlated with a reduction in cdc25C levels.
Conclusions:
- Polysulfides, specifically tri- and tetrasulfides, demonstrate significant potential as therapeutic agents against colon cancer.
- The anticancer effects are mediated through ROS generation and are redox-dependent.
- The p53 pathway is not required for diallylsulfide-induced apoptosis in HCT116 cells.
- Reduced cdc25C levels are associated with the observed growth arrest and apoptosis, providing mechanistic insight.
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