Apoptosis of Human Leukemia HL-60 Cells and Murine Leukemia WEHI-3 Cells Induced by Berberine through the Activation of Caspase-3
The aim of this study was to clarify the mechanisms of apoptosis, cytotoxicity, DNA damage and fragmentation, as well as the production of reactive oxygen species (ROS) and Ca +2 , induced by berberine in human promyelocytic leukemia HL-60 and murine myelomonocytic leukemia WEHI-3 cells. The levels...
Saved in:
Published in | Anticancer research Vol. 26; no. 1A; pp. 227 - 242 |
---|---|
Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Attiki
International Institute of Anticancer Research
01.01.2006
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | The aim of this study was to clarify the mechanisms of apoptosis, cytotoxicity, DNA damage and fragmentation, as well as the
production of reactive oxygen species (ROS) and Ca +2 , induced by berberine in human promyelocytic leukemia HL-60 and murine myelomonocytic leukemia WEHI-3 cells. The levels of
Bcl-2 and Bax, the changes of mitochondria membrane potential (MMP), cytochrome c release and activation of caspase-3 were
also investigated in both cell lines. The flow cytometry and DAPI staining assays indicated that berberine induced cytotoxicity
in both cell lines examined. Flow cytometry assay also showed that berberine induced ROS and Ca +2 production, decreased the levels of MMP and increased the activity of caspase-3 in both cell lines examined. Berberine-induced
apoptosis was accompanied by increased levels of Ca +2 and a decrease in the mitochondrial membrane potential, leading to the release of cytochrome c and the cleavage of pro-caspase-3.
Western blotting also showed that berberine increased the levels of Bax and cytochrome c and decreased the levels of Bcl-2
in both cell lines. Inhibition of caspase-3 activation (z-VAD-fmk: cell-permeable broad-spectrum caspase inhibitor) completely
blocked berberine-induced apoptosis in both HL-60 and WEHI-3 cells. Therefore, berberine induced apoptosis in both examined
cell lines through the activation of caspase-3. |
---|---|
Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0250-7005 1791-7530 |