A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Discovery of potent and selective nonplanar tankyrase inhibiting nicotinamide mimics
Tekijät: Nkizinkiko Y, Kumar BVSS, Jeankumar VU, Haikarainen T, Koivunen J, Madhuri C, Yogeeswari P, Venkannagari H, Obaji E, Pihlajaniemi T, Sriram D, Lehtio L
Kustantaja: PERGAMON-ELSEVIER SCIENCE LTD
Julkaisuvuosi: 2015
Journal: Bioorganic and Medicinal Chemistry
Tietokannassa oleva lehden nimi: BIOORGANIC & MEDICINAL CHEMISTRY
Lehden akronyymi: BIOORGAN MED CHEM
Vuosikerta: 23
Aloitussivu: 4139
Lopetussivu: 4149
Sivujen määrä: 11
ISSN: 0968-0896
DOI: https://doi.org/10.1016/j.bmc.2015.06.063
Tiivistelmä
Diphtheria toxin-like ADP-ribosyltransferases catalyse a posttranslational modification, ADP-ribosylation and form a protein family of 17 members in humans. Two of the family members, tankyrases 1 and 2, are involved in several cellular processes including mitosis and Wnt/beta-catenin signalling pathway. They are often over-expressed in cancer cells and have been linked with the survival of cancer cells making them potential therapeutic targets. In this study, we identified nine tankyrase inhibitors through virtual and in vitro screening. Crystal structures of tankyrase 2 with the compounds showed that they bind to the nicotinamide binding site of the catalytic domain. Based on the co-crystal structures we designed and synthesized a series of tetrahydroquinazolin-4-one and pyridopyrimidin-4-one analogs and were subsequently able to improve the potency of a hit compound almost 100-fold (from 11 mu M to 150 nM). The most potent compounds were selective towards tankyrases over a panel of other human ARTD enzymes. They also inhibited Wnt/beta-catenin pathway in a cell-based reporter assay demonstrating the potential usefulness of the identified new scaffolds for further development. (C) 2015 Elsevier Ltd. All rights reserved.
Diphtheria toxin-like ADP-ribosyltransferases catalyse a posttranslational modification, ADP-ribosylation and form a protein family of 17 members in humans. Two of the family members, tankyrases 1 and 2, are involved in several cellular processes including mitosis and Wnt/beta-catenin signalling pathway. They are often over-expressed in cancer cells and have been linked with the survival of cancer cells making them potential therapeutic targets. In this study, we identified nine tankyrase inhibitors through virtual and in vitro screening. Crystal structures of tankyrase 2 with the compounds showed that they bind to the nicotinamide binding site of the catalytic domain. Based on the co-crystal structures we designed and synthesized a series of tetrahydroquinazolin-4-one and pyridopyrimidin-4-one analogs and were subsequently able to improve the potency of a hit compound almost 100-fold (from 11 mu M to 150 nM). The most potent compounds were selective towards tankyrases over a panel of other human ARTD enzymes. They also inhibited Wnt/beta-catenin pathway in a cell-based reporter assay demonstrating the potential usefulness of the identified new scaffolds for further development. (C) 2015 Elsevier Ltd. All rights reserved.
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