期刊
ANTICANCER RESEARCH
卷 40, 期 12, 页码 6869-6877出版社
INT INST ANTICANCER RESEARCH
DOI: 10.21873/anticanres.14709
关键词
Maslinic acid; human cervical cancer; HeLa cells; DNA damage; DNA condensation and fragmentation
类别
资金
- Chang Bing Show Chwan Memorial Hospital, Changhua, Taiwan [RD106069]
- China Medical University, Taichung, Taiwan [CMU106-ASIA-01]
Background/Aim: Maslinic acid, a natural plant-derived triterpenoid compound, exhibits pharmacological activities, including anti-cancer. In the present study, we investigated the cytotoxic effects of maslinic acid on human cervical cancer HeLa cells in vitro and further investigated the molecular mechanism of maslinic acid-induced DNA damage and repair. Materials and Methods: Cell viability was measured by flow cytometry. DNA condensation (apoptotic cell death), DNA damage, and DNA fragmentation (DNA ladder) were assayed by DAPI staining, comet assay, and agarose gel electrophoresis, respectively. The expression of DNA damage and repair proteins was assayed by western blotting. Results: Maslinic acid decreased total cell viability and induced DNA condensation, damage, and fragmentation in HeLa cells. Furthermore, maslinic acid elevated the levels of p-ATM(Ser1981), p-ATR(Ser428), p53, p-p53(Ser151), p-H2A.X-Ser139, BRCA1 and PARP at 30-40 mu M. However, it decreased the levels of DNA-PK and MGMT. Conclusion: Maslinic acid reduced the number of viable HeLa cells by inducing DNA damage and altering the expression of proteins involved in DNA damage and repair.
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