title: Cribrostatin 6 induces death in cancer cells through a reactive oxygen species (ROS)-mediated mechanism.
abstract: Cribrostatin 6 is a quinone-containing natural product that induces the death of cancer cell lines in culture, and its mechanism of action and scope of activity are unknown. Here we show that cribrostatin 6 has broad anticancer activity, potently inducing apoptotic cell death that is not preceded by any defined cell cycle arrest. Consistent with this data, we find that cribrostatin 6 treated cells have large amounts of reactive oxygen species (ROS) and, based on transcript profiling experiments and other data, this ROS generation is likely the primary mechanism by which cribrostatin 6 induces apoptosis. Given the success of certain ROS producers as anticancer agents, cribrostatin 6 has potential as a novel chemotherapeutic agent.
authors.affiliation: Department of Chemistry, Roger Adams Laboratory, University of Illinois, Urbana, IL, 61801, USA.
authors.forename: Mirth T
authors.initials: MT
authors.lastname: Hoyt
authors.forename: Rahul
authors.initials: R
authors.lastname: Palchaudhuri
authors.forename: Paul J
authors.initials: PJ
authors.lastname: Hergenrother
mesh_terms: D016475:3T3 Cells; D000111:Acetylcysteine / Q000494:pharmacology; D000818:Animals; D002166:Camptothecin / Q000494:pharmacology; D002453:Cell Cycle / Q000187:drug effects; D016923:Cell Death / Q000187:drug effects; D015687:Cell Hypoxia / Q000187:drug effects; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D019610:Cytoprotection / Q000187:drug effects; D004247:DNA / Q000378:metabolism; D004264:DNA Topoisomerases, Type I / Q000378:metabolism; D004250:DNA Topoisomerases, Type II / Q000378:metabolism; D015536:Down-Regulation / Q000187:drug effects; D004354:Drug Screening Assays, Antitumor; D004996:Ethidium / Q000378:metabolism; D005347:Fibroblasts / Q000166:cytology / Q000187:drug effects; D020869:Gene Expression Profiling; D015972:Gene Expression Regulation, Neoplastic / Q000187:drug effects; D051547:Heme Oxygenase-1 / Q000235:genetics / Q000378:metabolism; D006801:Humans; D007546:Isoquinolines / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D051379:Mice; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D017382:Reactive Oxygen Species / Q000378:metabolism*; D015854:Up-Regulation / Q000187:drug effects
chemical_list: D007546:Isoquinolines; D012333:RNA, Messenger; D017382:Reactive Oxygen Species; C477578:cribrostatin 6; D004247:DNA; C496541:HMOX1 protein, human; D051547:Heme Oxygenase-1; D004264:DNA Topoisomerases, Type I; D004250:DNA Topoisomerases, Type II; D004996:Ethidium; D000111:Acetylcysteine; D002166:Camptothecin