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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | You, Bo Ra Kim, Suhn Hee Park, Woo Hyun |
| Description | Author Affiliation: You BR ( Department of Physiology, Medical School, Research Institute for Endocrine Sciences, Chonbuk National University, JeonJu, 561-180, Republic of Korea.) |
| Abstract | Suberoyl bishydroxamic acid (SBHA) as a histone deacetylase (HDAC) inhibitor can induce apoptosis through the formation of reactive oxygen species (ROS). However, there is no report about the regulation of ROS and antioxidant enzymes in SBHA-treated lung cancer cells. Here, we investigated the toxicological effects of SBHA on the regulations of ROS, glutathione (GSH), and antioxidant enzymes, especially thioredoxin (Trx) in A549 lung cancer cells. SBHA inhibited the growth of A549 cells in time- and dose-dependent manners, and it induced apoptosis which accompanied by the loss of mitochondrial membrane potential (MMP; $ΔΨ_{m}).$ SBHA significantly increased ROS levels including $O_{2}^{•−}$ level at 72 h whereas it decreased ROS levels at the early time points (30 min to 3 h). SBHA also induced GSH depletion at 24 and 72 h. N-acetyl cysteine (NAC; a well-known antioxidant) prevented apoptotic cell death and GSH depletion via decreasing ROS in SBHA-treated A549 cells. In addition, SBHA changed the levels of antioxidant-related proteins, especially Trx1. The expression and activity of Trx1 in A549 cells were reduced by SBHA. While the downregulation of Trx1 enhanced cell death, ROS level, and GSH depletion in SBHA-treated A549 cells, the overexpression of Trx1 decreased ROS level in these cells without the prevention of cell death and GSH depletion. In conclusion, SBHA-induced A549 cell death was influenced by changes in ROS and GSH levels. The basal status of Trx1 among other antioxidant proteins was closely correlated with the survival of A549 cells. |
| File Format | HTM / HTML |
| ISSN | 10104283 |
| Issue Number | 5 |
| Volume Number | 36 |
| e-ISSN | 14230380 |
| Journal | Tumor Biology |
| Language | English |
| Publisher | Springer |
| Publisher Date | 2015-05-01 |
| Publisher Place | Netherlands |
| Access Restriction | Subscribed |
| Subject Keyword | Discipline Medicine__semicolon__oncology Apoptosis Drug Effects Glutathione Physiology Histone Deacetylase Inhibitors Pharmacology Hydroxamic Acids Lung Neoplasms Drug Therapy Reactive Oxygen Species Metabolism Thioredoxins Acetylcysteine Cell Line, Tumor Cell Proliferation Analysis Humans Pathology Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Medicine Cancer Research |
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