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Updated: Mar 21, 2026

High-Throughput Cellular Profiling of Targeted Protein Degradation Compounds Using HiBiT CRISPR Cell Lines
Published on: November 9, 2020
Design, synthesis, and biological evaluation of novel hydrophobic tag-based degraders targeting JNK1
Yi Huang1, Man Chi2, Ye Zhang2
1State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China; School of Pharmacy, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China; Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines; Engineering Laboratory of Development and Application of Traditional Chinese Medicines; Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China.
Abstract:
The epithelial-mesenchymal transition (EMT) plays a pivotal role in embryonic development and tissue repair. However, dysregulated EMT contributes to fibrotic disorders and cancer metastasis. JNK1 is recognized as a core regulator of TGF-β-induced EMT, positioning it as a therapeutic target for EMT-associated pathologies. Here, we report the first application of hydrophobic tag (HyT) technology, a targeted protein degradation (TPD) strategy, to develop JNK1 degraders. A series of HyT-based degraders was designed and synthesized by conjugating the JNK1 inhibitor A3 to structurally distinct hydrophobic moieties. Compound HY12 emerged as a potent degrader, inducing dose- and time-dependent JNK1 degradation. Mechanistic studies revealed that both the ubiquitin-proteasome system (UPS) and the autophagy-lysosome pathway contribute to HY12-mediated JNK1 degradation. Furthermore, HY12 effectively inhibited TGF-β1-induced EMT. This work establishes a novel HyT-mediated JNK1 degradation platform and provides a promising therapeutic strategy for EMT-associated disorders.
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