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Published on: March 20, 2018
The study on adriamycin induced DNA scissions in human cells with different activity of some antioxidant enzymes
1Drug Institute, 30/34 Chełmska Str., 00-725 Warsaw, Poland.
Abstract:
Although the anthracycline antibiotic adriamycin has been widely used in treatment of variety of human malignances, the mechanism of its biological activity is still unknown. One of the proposed mechanisms of action assumes the generation of active oxygen species which may damage DNA of cells. In this study we investigated if the occurrence of DNA breaks induced by adriamycin depends on the intracellular level of antioxidant enzymes. The study was performed with two human cell lines (CRL2088 and CLV102) differing in activity of catalase and superoxide dismutase. The results indicated that the level of DNA breaks in both lines treated with adriamycin was similar despite of differences in the enzymes activity.
Insights
Adriamycin treatment caused similar DNA breaks in human cells, regardless of antioxidant enzyme levels. This suggests adriamycin
Area of Science:
- Biochemistry
- Molecular Biology
- Oncology
Background:
- Adriamycin (doxorubicin) is a widely used anthracycline antibiotic for various human malignancies.
- Its precise biological activity mechanism remains largely unknown.
- A proposed mechanism involves the generation of reactive oxygen species (ROS) leading to DNA damage.
Purpose of the Study:
- To investigate if adriamycin-induced DNA breaks are dependent on intracellular antioxidant enzyme levels.
- To explore the role of catalase and superoxide dismutase in adriamycin's DNA-damaging effects.
Main Methods:
- Utilized two human cell lines (CRL2088 and CLV102) with differing catalase and superoxide dismutase activity.
- Treated cell lines with adriamycin.
- Assessed and compared the occurrence of DNA breaks in both cell lines.
Main Results:
- Similar levels of adriamycin-induced DNA breaks were observed in both cell lines.
- The observed DNA damage was consistent despite significant differences in antioxidant enzyme activity between the cell lines.
Conclusions:
- Intracellular levels of catalase and superoxide dismutase do not appear to significantly influence adriamycin-induced DNA breaks.
- The findings suggest that antioxidant enzymes may not be the primary determinant of adriamycin's DNA-damaging effects in these cell models.
