کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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2594294 | 1132263 | 2010 | 6 صفحه PDF | دانلود رایگان |
In order to examine the chronic effects of anticancer drug 5-fluorouracil (5-FU) on reproduction and development, we exploited Caenorhabditis elegans as a model system. We demonstrate that 5-FU induces cell-cycle arrest and apoptosis of germline cells and reduces by ∼30–40% the number of mitotic nuclei per gonad arm when compared to untreated worms. This drug also affects vulva development, some animals being vulvaless, as well as dysfunction of vulval and egg laying muscles leading to an 8–10 days delay in reproductive time. Interestingly, 5-FU represses levels of mRNA encoding LIN-29, a transcription factor that affects vulva development and egg laying system. Finally, we demonstrate that RNAi-dependent repression of ung-1 gene, which encodes a uracil-DNA glycosylase, partially abolishes 5-FU effects on embryo hatching. Thus, we proposed that C. elegans could be a useful model system for studying the mechanisms by which 5-FU might affect either embryo, adult or organ development.
Journal: Reproductive Toxicology - Volume 29, Issue 4, July 2010, Pages 415–420