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:: Volume 4, Issue 1 (4-2010) ::
Qom Univ Med Sci J 2010, 4(1): 3-9 Back to browse issues page
Study of Alpha Tocopherol, Celecoxib Induced Apoptosis in Human Colorectal Carcinoma Cell Line
R Solgui 1, H Kalantari 1, Y Arast 2, MR Seifi 1, H Gallehdari 3, M Rezaei * 4
1- Jundishapur University of Medical Sciences
2- Qom University of Medical Sciences
3- Shahid Chamran University of Ahvaz
4- Jundishapur University of Medical Sciences , rezaei.mohsen@Gmail.com
Abstract:   (1895 Views)

Background and Objectives: Chronic, unbridled oxidative damages have been known as the culprits behind many chronic diseases, including cancers, atherosclerosis, diabetes and Alzheimer’s. Cyclooxygenase-2 (COX-2)-the main enzyme involved in inducing these processes- plays an important role in tumor development and progression. COX-2 inhibitors should be used at high doses for a long time in order to bring about chemoprevention and induction of anti-tumor effects. For example, celecoxib prevents colorectal tumor growth and induces apoptosis in both in vitro and in vivo models. Disregulation of COX-2 expression coincides with the development of gastrointestinal malignancy in humans and in animal models of colorectal cancer. Increased COX-2 expression in human colorectal adeno-carcinomas has been elucidated when compared with normal adjacent colonic mucosa. The capacity of vitamin E, particularly in α form, to quench free radical damage, induces apoptosis and impact expression of oncogenes makes it an appropriate choice for chemotherapeutic strategies. Studies have shown that carcinogenesis and DNA damage due to UV are inhibited by vitamin E. The goal of this study was to investigate alpha tocopherol and celecoxib induced apoptosis in human colorectal carcinoma cell line. Methods: In this study, HT29 cells were exposed to different concentrations of tocopherol (5, 10, and 20µM) and celecoxib (25, 50, 75, 100µM) followed by DNA extraction and fragmentation for demonstrating cell death process. Results: The results indicated that celecoxib at lower doses (25, and 50µM) could not induce cell death, but at higher doses (75, and 100 µM), DNA fragmentation results typically resembled programmed cell death. Conclusion: ocopherol (5, 10, and 20µM) in combination with celecoxib improved the impact of celecoxib on cell death induction and made it the rational notion to be combined with vitamin E in clinical practice.

Keywords: Celecoxib, Tocopherol, Cell Death, Colonic Neoplasms
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Type of Study: Original Article |
Received: 2016/02/13 | Accepted: 2016/02/22 | Published: 2016/02/22
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Solgui R, Kalantari H, Arast Y, Seifi M, Gallehdari H, Rezaei M. Study of Alpha Tocopherol, Celecoxib Induced Apoptosis in Human Colorectal Carcinoma Cell Line. Qom Univ Med Sci J . 2010; 4 (1) :3-9
URL: http://journal.muq.ac.ir/article-1-48-en.html

Volume 4, Issue 1 (4-2010) Back to browse issues page
مجله دانشگاه علوم پزشکی قم Qom University of Medical Sciences Journal
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