title: The effect of cyclopentenyl cytosine on human SK-N-BE(2)-C neuroblastoma cells.
abstract: Human neuroblastoma SK-N-BE(2)-C cell-line cells were cultured in the presence of various concentrations of cyclopentenyl cytosine (CPEC). In the absence of cytidine, the IC50 value of CPEC for SK-N-BE(2)-C cells was 100 nM after 72 hr drug exposure. The IC20 value was 1 microM after 24 hr of exposure to CPEC in the presence of 10 microM cytidine, whereas in the absence of cytidine, CPEC at 1 microM resulted in an IC40 value after 24 hr. Therefore, cytidine partially prevented the cytostatic effect of CPEC. Cells cultured with 1 microM CPEC for 72 hr were enriched by approximately 410% with mono- and oligonucleosomes in comparison with cells cultured without CPEC. This enrichment was partially prevented with 10 microM deoxycytidine and completely prevented with 10 microM cytidine.
authors.affiliation: University of Amsterdam, Department of Pediatrics, The Netherlands.
authors.forename: R J
authors.initials: RJ
authors.lastname: Slingerland
authors.forename: A H
authors.initials: AH
authors.lastname: Van Gennip
authors.forename: J M
authors.initials: JM
authors.lastname: Bodlaender
authors.forename: P A
authors.initials: PA
authors.lastname: Voûte
authors.forename: A B
authors.initials: AB
authors.lastname: Van Kuilenburg
mesh_terms: D000970:Antineoplastic Agents / Q000494:pharmacology*; D017209:Apoptosis; D002470:Cell Survival / Q000187:drug effects; D003562:Cytidine / Q000031:analogs & derivatives* / Q000037:antagonists & inhibitors / Q000494:pharmacology; D004273:DNA, Neoplasm / Q000096:biosynthesis; D006801:Humans; D009447:Neuroblastoma / Q000188:drug therapy; D014407:Tumor Cells, Cultured / Q000187:drug effects
chemical_list: D000970:Antineoplastic Agents; D004273:DNA, Neoplasm; D003562:Cytidine; C045911:cyclopentenyl cytosine