期刊
CANCER LETTERS
卷 164, 期 1, 页码 77-84出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/S0304-3835(00)00720-5
关键词
apoptosis; bax; colorectal neoplasms; reactive oxygen species; antioxidant
类别
5 Fluorouracil (5 FU), the most effective systemic chemotherapeutic agent in the management of advanced colorectal carcinoma acts by inducing apoptosis. Response rates, approximately 20% is improved by folinic acid. This study investigates similar modulation of 5 FU-induced apoptosis by oxidant quenching. A five-fold reduction of intracellular oxidant levels by antioxidants N-acetylcysteine and vitamin E did not induce apoptosis, it however augmented pro-apoptotic bax protein expression, and apoptotic response to a non-toxic dose of 5 EU in the colorectal cancer cell lines cole 201 and cole 205. This suggests that reduction of intracellular levels of reactive oxygen species enhance susceptibility to 5 FU (apoptotic stimuli) by augmentation of bax expression. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.
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