Browsing by Author "Tsumoto, Kouhei"

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    Discovery and Optimization of Inhibitors of the Parkinson’s Disease Associated Protein DJ-1
    (ACS, 2018-07) Tashiro, Shinya; Caaveiro, Jose M. M.; Nakakido, Makoto; Tanabe, Aki; Nagatoishi, Satoru; Tamura, Yasushi; Matsuda, Noriyuki; Liu, Dali; Hoang, Quyen Q.; Tsumoto, Kouhei; Biochemistry and Molecular Biology, School of Medicine
    DJ-1 is a Parkinson’s disease associated protein endowed with enzymatic, redox sensing, regulatory, chaperoning, and neuroprotective activities. Although DJ-1 has been vigorously studied for the past decade and a half, its exact role in the progression of the disease remains uncertain. In addition, little is known about the spatiotemporal regulation of DJ-1, or the biochemical basis explaining its numerous biological functions. Progress has been hampered by the lack of inhibitors with precisely known mechanisms of action. Herein, we have employed biophysical methodologies and X-ray crystallography to identify and to optimize a family of compounds inactivating the critical Cys106 residue of human DJ-1. We demonstrate these compounds are potent inhibitors of various activities of DJ-1 in vitro and in cell-based assays. This study reports a new family of DJ-1 inhibitors with a defined mechanism of action, and contributes toward the understanding of the biological function of DJ-1.