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      1. Author :
        Shimomura, Toshiyasu; Hasako, Shinichi; Nakatsuru, Yoko; Mita, Takashi; Ichikawa, Koji; Kodera, Tsutomu; Sakai, Takumi; Nambu, Tadahiro; Miyamoto, Mayu; Takahashi, Ikuko; Miki, Satomi; Kawanishi, Nobuhiko; Ohkubo, Mitsuru; Kotani, Hidehito; Iwasawa, Yoshikazu
      2. Title :
      3. Type :
        Journal Article
      4. Year :
        2010
      5. Publication :
        Molecular cancer therapeutics
      6. Products :
      7. Volume :
        9
      8. Issue :
        1
      9. Page Numbers :
        N/A
      10. Research Area :
        N/A
      11. Keywords :
        Animals; Antineoplastic Agents; Antineoplastic Combined Chemotherapy Protocols; Bioware; Cell Death; Cell Line, Tumor; Cell Proliferation; Cyclohexanecarboxylic Acids; HeLa-luc; Humans; Inhibitory Concentration 50; Mice; Mitosis; Protein kinase inhibitors; Protein-Serine-Threonine Kinases; Rats; Taxoids; Thiazoles; Xenograft Model Antitumor Assays
      12. Abstract :
        Aurora-A kinase is a one of the key regulators during mitosis progression. Aurora-A kinase is a potential target for anticancer therapies because overexpression of Aurora-A, which is frequently observed in some human cancers, results in aberrant mitosis leading to chromosomal instability and possibly tumorigenesis. MK-5108 is a novel small molecule with potent inhibitory activity against Aurora-A kinase. Although most of the Aurora-kinase inhibitors target both Aurora-A and Aurora-B, MK-5108 specifically inhibited Aurora-A kinase in a panel of protein kinase assays. Inhibition of Aurora-A by MK-5108 in cultured cells induced cell cycle arrest at the G(2)-M phase in flow cytometry analysis. The effect was confirmed by the accumulation of cells with expression of phosphorylated Histone H3 and inhibition of Aurora-A autophosphorylation by immunostaining assays. MK-5108 also induced phosphorylated Histone H3 in skin and xenograft tumor tissues in a nude rat xenograft model. MK-5108 inhibited growth of human tumor cell lines in culture and in different xenograft models. Furthermore, the combination of MK-5108 and docetaxel showed enhanced antitumor activities compared with control and docetaxel alone-treated animals without exacerbating the adverse effects of docetaxel. MK-5108 is currently tested in clinical trials and offers a new therapeutic approach to combat human cancers as a single agent or in combination with existing taxane therapies.
      13. URL :
        http://www.ncbi.nlm.nih.gov/pubmed/20053775
      14. Call Number :
        PKI @ catherine.lautenschlager @
      15. Serial :
        9006