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Updated: Oct 23, 2025

Chemical Inactivation of the E3 Ubiquitin Ligase Cereblon by Pomalidomide-based Homo-PROTACs
Published on: May 15, 2019
Developments of CRBN-based PROTACs as potential therapeutic agents
Chao Wang1, Yujing Zhang2, Yudong Wu1
1The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, 266071, Shandong, China.
Protease-targeted chimeras (PROTACs) harness the ubiquitin system for targeted protein degradation. This review focuses on Cereblon (CRBN)-based PROTACs, highlighting their broad therapeutic potential beyond cancer.
Area of Science:
- Biochemistry
- Molecular Biology
- Drug Discovery
Background:
- Protease-targeted chimeras (PROTACs) represent an innovative therapeutic modality.
- PROTACs function by recruiting E3 ubiquitin ligases to induce targeted protein degradation.
- Heterobifunctional PROTACs comprise an E3 ligase ligand, a linker, and a target protein ligand.
Purpose of the Study:
- To provide a comprehensive update on recent advancements in Cereblon (CRBN)-based PROTACs.
- To review the therapeutic applications of CRBN-based PROTACs across various disease areas.
- To discuss the future prospects and challenges associated with CRBN-based PROTAC technology.
Main Methods:
- Literature review of CRBN-based PROTAC research.
- Categorization of PROTACs by disease area and target class.
- Systematic presentation of degradants, alphabetized by target.
Main Results:
- Identification of various small-molecule PROTACs, including CRBN, VHL, IAPs, MDM2, DCAF15, DCAF16, and RNF114-based systems.
- CRBN-based PROTACs (e.g., ARV-110, ARV-471) show significant therapeutic promise.
- CRBN-based PROTACs have demonstrated efficacy in cancer, cardiovascular, immune, neurodegenerative, and infectious diseases.
Conclusions:
- CRBN-based PROTACs are a rapidly advancing field with broad therapeutic applicability.
- Continued research is crucial for overcoming potential challenges and realizing the full potential of PROTACs.
- CRBN-based PROTACs offer a promising new avenue for disease treatment.
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