Development and structural analysis of adenosine site binding tankyrase inhibitors

作者：Haikarainen Teemu; Waaler Jo; Ignatev Alexander; Nkizinkiko Yves; Venkannagari Harikanth; Obaji Ezeogo; Krauss Stefan^*; Lehtio Lari

来源：Bioorganic & Medicinal Chemistry Letters, 2016, 26(2): 328-333.

DOI：10.1016/j.bmcl.2015.12.018

• ARTD
• PARP
• Tankyrase
• Tankyrase inhibitor
• WNT signaling
• WNT inhibitor
• Small-molecule

Tankyrases 1 and 2, the specialized members of the ARTD protein family, are druggable biotargets whose inhibition may have therapeutic potential against cancer, metabolic disease, fibrotic disease, fibrotic wound healing and HSV viral infections. We have previously identified a novel tankyrase inhibitor scaffold, JW55, and showed that it reduces mouse colon adenoma formation in vivo. Here we expanded the scaffold and profiled the selectivity of the compounds against a panel of human ARTDs. The scaffold also enables a fine modulation of selectivity towards either tankyrase 1 or tankyrase 2. In order to get insight about the binding mode of the inhibitors, we solved crystal structures of the compounds in complex with tankyrase 2. The compounds bind to the adenosine pocket of the catalytic domain and cause changes in the protein structure that are modulated by the chemical modifications of the compounds. The structural analysis allows further rational development of this compound class as a potent and selective tankyrase inhibitor.

• 出版日期2016-1-15
• 单位河北医科大学