title: Proteomic analysis of antiproliferative effects by treatment of 5-fluorouracil in cervical cancer cells.
abstract: The global effects of 5-fluorouracil (FU) on cervical carcinoma cells were analyzed using an efficient proteomic method. More than 50 proteins showed a significant change in 5-FU-treated cervical carcinoma cells compared to control cells. Among them, 34 proteins have been identified by employing two-dimensional gel electrophoresis and MALDI-TOF-MS using peptide mass fingerprinting. In results, 22 proteins were upregulated (CIDE-B [cell death-inducing DFFA-like effector B], caspase-3, caspase-8, Apo-1/CD95 (Fas), etc.) and 12 proteins were downregulated (mitotic checkpoint protein BUB3, myc proto-oncogene protein [c-myc], src substrate cortactin, transforming protein p21A, etc.) by 5-FU treatment in HeLa cervical carcinoma cells as determined by spot volume (P <0.05). Our experiments showed that 5-FU engaged the mitochondrial apoptotic pathway involving cytosolic cytochrome c release and subsequent activation of caspase-9 and caspase-3 as well as the membrane death receptor (DR)-mediated apoptotic pathway involving activation of caspase-8 with an Apo-1/CD95 (Fas)-dependent fashion. In addition, we could observe reduction of HPV-18 E6/E7 gene expression and activation of p53, pRb, and p21waf1 proteins by 5-FU treatment in HeLa cervical carcinoma cells. In conclusion, we suggest that 5-FU suppresses the growth of cervical cancer cells not only by antiproliferative effect but also antiviral regulation. Our findings may offer new insights into the mechanism of anticancer effect affected by 5-FU treatment in cervical cancer cells and its mode of action.
authors.affiliation: Department of Medical Bioscience, Graduate School of Catholic University, Seoul, Republic of Korea.
authors.forename: Eun-Kyoung
authors.initials: EK
authors.lastname: Yim
authors.forename: Keun-Ho
authors.initials: KH
authors.lastname: Lee
authors.forename: Jun Sang
authors.initials: JS
authors.lastname: Bae
authors.forename: Sung-Eun
authors.initials: SE
authors.lastname: Namkoong
authors.forename: Soo-Jong
authors.initials: SJ
authors.lastname: Um
authors.forename: Jong-Sup
authors.initials: JS
authors.lastname: Park
mesh_terms: D000964:Antimetabolites, Antineoplastic / Q000494:pharmacology*; D001483:Base Sequence; D002455:Cell Division / Q000187:drug effects*; D017931:DNA Primers; D015180:Electrophoresis, Gel, Two-Dimensional; D005260:Female; D005472:Fluorouracil / Q000494:pharmacology*; D006367:HeLa Cells; D006801:Humans; D020543:Proteome; D000090063:Proto-Oncogene Mas; D020133:Reverse Transcriptase Polymerase Chain Reaction; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; D002583:Uterine Cervical Neoplasms / Q000473:pathology*
chemical_list: D000964:Antimetabolites, Antineoplastic; D017931:DNA Primers; C000715470:MAS1 protein, human; D020543:Proteome; D000090063:Proto-Oncogene Mas; D005472:Fluorouracil