title: Evaluating the cytotoxicity of ionic liquids using human cell line HeLa.
abstract: This paper presents cytotoxicity data of selected imidazolium ionic liquids evaluated in vitro on the human tumor cell line HeLa. It was found that for 1-n-butyl-3-methylimidazolium entities the toxicity depends strongly on the associated anion; EC50 values are lowest for tetrafluoroborate. No direct dependence of the reduced effect concentration was found on elongating the short, methyl chain to ethyl or n-hexyl. Only for the ionic liquid with an n-decyl chain, the longest one studied, did higher hydrophobicity result in a EC50 one order of magnitude lower than that obtained with the n-butyl entity. The effect concentrations of imidazolium ionic liquids in the HeLa system used are lower than the values obtained for conventional organic solvents such as dichloromethane, toluene or xylene.
authors.affiliation: Faculty of Chemistry, University of Gdańsk, PL 80-952 Gdańsk, ul. Sobieskiego 18, Poland. sox@chem.univ.gda.pl
authors.forename: P
authors.initials: P
authors.lastname: Stepnowski
authors.forename: A C
authors.initials: AC
authors.lastname: Składanowski
authors.forename: A
authors.initials: A
authors.lastname: Ludwiczak
authors.forename: E
authors.initials: E
authors.lastname: Laczyńska
mesh_terms: D001881:Borates / Q000737:chemistry / Q000633:toxicity*; D002470:Cell Survival / Q000187:drug effects; D004305:Dose-Response Relationship, Drug; D006367:HeLa Cells / Q000187:drug effects* / Q000473:pathology; D006801:Humans; D057927:Hydrophobic and Hydrophilic Interactions; D007093:Imidazoles / Q000737:chemistry / Q000633:toxicity*; D007477:Ions; D021281:Quantitative Structure-Activity Relationship; D012997:Solvents / Q000633:toxicity; D018675:Toxicity Tests / Q000379:methods
chemical_list: C419324:1-butyl-3-methylimidazolium tetrafluoroborate; D001881:Borates; D007093:Imidazoles; D007477:Ions; D012997:Solvents