2. Academic Validation
  3. Design, Synthesis, and Biological Evaluation of Hydrophobic-Tagged Glutathione Peroxidase 4 (GPX4) Degraders

Design, Synthesis, and Biological Evaluation of Hydrophobic-Tagged Glutathione Peroxidase 4 (GPX4) Degraders

  • Bioorg Chem. 2024 Mar:144:107115. doi: 10.1016/j.bioorg.2024.107115.
Xiaomei Li 1,  Mengdie Hu 2,  Yanping Zhang 2,  Hui Hua 1,  Yujie Sun 1,  Qiuping Xiang 3,  Dongsheng Zhu 4
Affiliations

Affiliations

  • 1 Ningbo No. 2 Hospital, Ningbo 315010, China; Guoke Ningbo Life Science and Health Industry Research Institute, Ningbo 315010, China.
  • 2 Department of Urology, the Second Affiliated Hospital of Nanjing Medical University, and Department of Medicinal Chemistry, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China.
  • 3 Ningbo No. 2 Hospital, Ningbo 315010, China; Guoke Ningbo Life Science and Health Industry Research Institute, Ningbo 315010, China. Electronic address: qpxiang@ucas.ac.cn.
  • 4 Department of Urology, the Second Affiliated Hospital of Nanjing Medical University, and Department of Medicinal Chemistry, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China. Electronic address: zhuds@njmu.edu.cn.
PMID: 38232684 DOI: 10.1016/j.bioorg.2024.107115
Abstract

Ferroptosis is an iron-dependent form of oxidative cell death induced by lipid peroxidation accumulation. Glutathione Peroxidase 4 (GPX4) plays a key role in the regulation of Ferroptosis and is considered to be a promising therapeutic target for Cancer and other human diseases. Herein, we describe our design, synthesis, and biological evaluation of a series of HyT-based degraders of the GPX4. One of the most promising compounds, 7b (ZX782), effectively induces dose- and time-dependent degradation of GPX4 protein and potently suppresses the growth of human fibrosarcoma HT1080 cells, which are highly sensitive to Ferroptosis and widely used for evaluating compound specificity in Ferroptosis. Mechanism investigation indicated that 7b depletes GPX4 through both the ubiquitin-proteasome and the autophagy-lysosome. Furthermore, the degradation of GPX4 induced by 7b could significantly increase the accumulation of lipid Reactive Oxygen Species (ROS) in HT1080 cells, ultimately leading to Ferroptosis. Overall, compound 7b exhibits robust potency in depleting endogenous GPX4, thereby modulating Ferroptosis in Cancer cells.

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