title: A novel synthetic analog of 5, 8-disubstituted quinazolines blocks mitosis and induces apoptosis of tumor cells by inhibiting microtubule polymerization.
abstract: Many mitosis inhibitors are powerful anticancer drugs. Tremendous efforts have been made to identify new anti-mitosis compounds for developing more effective and less toxic anti-cancer drugs. We have identified LJK-11, a synthetic analog of 5, 8-disubstituted quinazolines, as a novel mitotic blocker. LJK-11 inhibited growth and induced apoptosis of many different types of tumor cells. It prevented mitotic spindle formation and arrested cells at early phase of mitosis. Detailed in vitro analysis demonstrated that LJK-11 inhibited microtubule polymerization. In addition, LJK-11 had synergistic effect with another microtubule inhibitor colchicine on blocking mitosis, but not with vinblastine or nocodazole. Therefore, LJK-11 represents a novel anti-microtubule structure. Understanding the function and mechanism of LJK-11 will help us to better understand the action of anti-microtubule agents and to design better anti-cancer drugs.
authors.affiliation: The School of Life Science and Biopharmaceutics of Shenyang Pharmaceutical University, Liaoning, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Tian
authors.forename: Lili
authors.initials: L
authors.lastname: Qin
authors.forename: Qiaoling
authors.initials: Q
authors.lastname: Song
authors.forename: Li
authors.initials: L
authors.lastname: He
authors.forename: Midan
authors.initials: M
authors.lastname: Ai
authors.forename: Yi
authors.initials: Y
authors.lastname: Jin
authors.forename: Zuyu
authors.initials: Z
authors.lastname: Zhou
authors.forename: Song
authors.initials: S
authors.lastname: You
authors.forename: Yaqiu
authors.initials: Y
authors.lastname: Long
authors.forename: Qiang
authors.initials: Q
authors.lastname: Yu
mesh_terms: D017209:Apoptosis / Q000187:drug effects*; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D003078:Colchicine / Q000494:pharmacology; D004354:Drug Screening Assays, Antitumor; D004357:Drug Synergism; D016195:G2 Phase / Q000187:drug effects; D006801:Humans; D008870:Microtubules / Q000187:drug effects* / Q000378:metabolism*; D008938:Mitosis / Q000187:drug effects*; D010766:Phosphorylation / Q000187:drug effects; D019000:Phosphotyrosine / Q000378:metabolism; D011799:Quinazolines / Q000737:chemistry / Q000494:pharmacology*; D008941:Spindle Apparatus / Q000187:drug effects / Q000378:metabolism; D014404:Tubulin / Q000378:metabolism
chemical_list: C551903:LJK 11 compound; D011799:Quinazolines; D014404:Tubulin; D019000:Phosphotyrosine; D003078:Colchicine
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