1
|
Arsenic trioxide blocked proliferation and cardiomyocyte differentiation of human induced pluripotent stem cells: Implication in cardiac developmental toxicity. Toxicol Lett 2019; 309:51-58. [DOI: 10.1016/j.toxlet.2019.03.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Revised: 01/29/2019] [Accepted: 03/17/2019] [Indexed: 11/22/2022]
|
2
|
Chen MJ, Yang PY, Ye YZ, Hu DN, Chen MF. Arsenic Trioxide Induces Apoptosis in Uveal Melanoma Cells Through the Mitochondrial Pathway. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2012; 38:1131-42. [DOI: 10.1142/s0192415x10008524] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Uveal melanoma, the most common primary intraocular malignancy in adults, is highly resistant to most chemotherapeutic drugs. Arsenic trioxide (ATO) is known to inhibit ocular melanoma cell growth. However, the effects of ATO on human uveal melanoma cells are poorly understood. Therefore, this study evaluated the mechanisms of ATO and its inhibiting effects on a human uveal melanoma cell line (SP6.5). An MTT assay indicated that, compared to human fibroblasts, ATO had a stronger inhibiting effect on SP6.5 cell proliferation in a dose- and time-dependent manner. The apoptosis ratio in SP6.5 cells, which was indicated by cell DNA fragmentation, was 4.1- to 7.7-fold higher after ATO-treatment. The ATO treatment substantially increased the activities of caspase-3 and caspase-9, but not of caspase-8. These findings were consistent with the protein expression observed by Western blots. ATO also significantly enhanced expression of Bax and cytochrome c proteins but suppressed those of Bcl-2. Therefore, ATO-induced apoptosis in uveal melanoma cells occurs mainly through the mitochondrial pathway rather than through the death receptor pathway. This report is the first to evaluate the complete mitochondria-dependent apoptotic pathway of ATO in uveal melanoma cells. These results can be used to improve the clinical effectiveness of ATO treatment for uveal melanoma.
Collapse
Affiliation(s)
- Miao-Ju Chen
- Department of Medical Research, Show Chwan Memorial Hospital, Changhua 500, Taiwan
| | - Pei-Yu Yang
- Department of Medical Research, Show Chwan Memorial Hospital, Changhua 500, Taiwan
| | - Yi-Zhen Ye
- Department of Medical Research, Show Chwan Memorial Hospital, Changhua 500, Taiwan
| | - Dan-Ning Hu
- Department of Medical Research, Show Chwan Memorial Hospital, Changhua 500, Taiwan
- The New York Eye and Ear Infirmary, New York Medical College, New York 10003, USA
| | - Ming-Feng Chen
- Department of Medical Research, Show Chwan Memorial Hospital, Changhua 500, Taiwan
- Graduate Institute of Chinese Medical Science, China Medical University, Taichung 40402, Taiwan
| |
Collapse
|