【摘 要】
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Keap1 is known to mediate the ubiquitination of Nrf2,a master regulator of the antioxidant response.Directly interrupting the Keap1-Nrf2 interaction has been emerged as a promising strategy to develop
【机 构】
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Jiang Su Key Laboratory of Drug Design and Optimization,China Pharmaceutical University,Nanjing 2100
【出 处】
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第十二届全国青年药学工作者最新科研成果交流会
论文部分内容阅读
Keap1 is known to mediate the ubiquitination of Nrf2,a master regulator of the antioxidant response.Directly interrupting the Keap1-Nrf2 interaction has been emerged as a promising strategy to develop novel class of antioxidant,antiinflammatory,and anticancer agents.Based on the molecular binding determinants analysis of Keap1,we successfully designed and characterized the most potent protein-protein interaction (PPI) inhibitor of Keap1-Nrf2,compound 2,with KD value of 3.57 nM binding to Keap1 for the first time to single digit nanomolar.Compound 2 can effectively disrupt the Nrf2-Keap1 interaction with an EC50 of 28.6 nM in the fluorescence polarization assay.It can also activate the Nrf2 transcription activity in the cell-based ARE-luciferase reporter assay in a dose-dependent manner.The qRT-PCR results of Nrf2 transcription targets gave the consistent results.These results confirm direct and highly efficient interruption of the Keap1-Nrf2 PPI can be fully achieved by small molecules.
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