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Benzylideneascorbate induces apoptosis in L929 tumor cells
S Tanuma1, D Shiokawa, Y Tanimoto
1Department of Biochemistry, Faculty of Pharmaceutical Sciences, Science University of Tokyo, Japan.
Biochemical and Biophysical Research Communications
|July 15, 1993
Summary
Sodium 5,6-benzylideneascorbate (SBA) directly triggers apoptosis in L929 tumor cells. This antitumor substance causes cell shrinkage and DNA fragmentation, suggesting a mechanism for in vivo tumor regression.
Area of Science:
- Biochemistry
- Cell Biology
- Pharmacology
Background:
- Sodium 5,6-benzylideneascorbate (SBA) is recognized for its antitumor properties.
- Understanding the precise mechanisms of SBA's action is crucial for cancer therapy development.
Purpose of the Study:
- To investigate the direct effects of SBA on L929 tumor cells.
- To elucidate the cellular mechanisms underlying SBA-induced tumor cell death.
Main Methods:
- Treatment of L929 tumor cells with varying concentrations and durations of SBA.
- Microscopic observation of cellular morphology changes.
- Analysis of DNA fragmentation patterns.
Main Results:
- SBA induced apoptotic cell death in L929 cells in a dose- and time-dependent manner.
- Characteristic apoptotic features observed include cell shrinkage, loss of microvilli, chromatin condensation, and DNA fragmentation.
- DNA fragmentation occurred in nucleosomal oligomers, a hallmark of apoptosis.
Conclusions:
- SBA directly induces apoptosis in L929 tumor cells.
- The observed cellular changes provide evidence for a mechanism of SBA-mediated tumor regression in vivo.