title: Characterization of DNA reactive and non-DNA reactive anticancer drugs by gene expression profiling.
abstract: Gene expression profiling technology is expected to advance our understanding of genotoxic mechanisms involving direct or indirect interaction with DNA. We exposed human lymphoblastoid TK6 cells to 14 anticancer drugs (vincristine, paclitaxel, etoposide, daunorubicin, camptothecin, amsacrine, cytosine arabinoside, hydroxyurea, methotrexate, 5-fluorouracil, cisplatin, 1-(2-chloroethyl)-3-cyclohexyl-1-nitrosourea (CCNU), 1,3-bis (2-chloroethyl)-1-nitrosourea (BCNU), and bleomycin) for 4-h and examined them immediately or after a 20-h recovery period. Cytotoxicity and genotoxicity, respectively, were evaluated by cell counting and by in vitro micronucleus assay at 24h. Effects on the cell cycle were determined by flow cytometry at 4 and 24h. Gene expression was profiled at both sampling times by using human Affymetrix U133A GeneChips (22K). Bioanalysis was done with Resolver/Rosetta software and an in-house annotation program. Cell cycle analysis and gene expression profiling allowed us to classify the drugs according to their mechanisms of action. The molecular signature is composed of 28 marker genes mainly involved in signal transduction and cell cycle pathways. Our results suggest that these marker genes could be used as a predictive model to classify genotoxins according to their direct or indirect interaction with DNA.
authors: sanofi aventis R&D, Drug Safety Evaluation, 13 quai Jules Guesde, 94403 Vitry-Sur-Seine Cedex, France.
authors: Anne-Celine
authors: AC
authors: Le Fevre
authors: Eric
authors: E
authors: Boitier
authors: Jean-Pierre
authors: JP
authors: Marchandeau
authors: Alain
authors: A
authors: Sarasin
authors: Veronique
authors: V
authors: Thybaud
mesh_terms: D000970:Antineoplastic Agents / Q000633:toxicity*; D002453:Cell Cycle / Q000187:drug effects; D002460:Cell Line; D002470:Cell Survival / Q000187:drug effects; D020869:Gene Expression Profiling; D006801:Humans; D015162:Micronucleus Tests; D008954:Models, Biological; D009153:Mutagens / Q000633:toxicity*; D020411:Oligonucleotide Array Sequence Analysis; D013937:Thymidine Kinase / Q000235:genetics
chemical_list: D000970:Antineoplastic Agents; D009153:Mutagens; D013937:Thymidine Kinase