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Updated: Jul 9, 2026

Comparative Strategies for Ubiquitination Detection in Mammalian Cell Lysates Using SMAD2/SMURF2 as a Model
Published on: April 17, 2026
Patented small molecule inhibitors in the ubiquitin proteasome system
Philippe Guédat1, Frédéric Colland
1Hybrigenics SA, 3-5 Impasse Reille, 75014 Paris, France. pguedat@hybrigenics.com
Abstract:
Deregulation of the ubiquitin proteasome system (UPS) has been implicated in the pathogenesis of many human diseases, including cancer and neurodegenerative disorders. The recent approval of the proteasome inhibitor Velcade(R) (bortezomib) for the treatment of multiple myeloma and mantle cell lymphoma establishes this system as a valid target for cancer treatment. We review here new patented proteasome inhibitors and patented small molecule inhibitors targeting more specific UPS components, such as E3 ubiquitin ligases and deubiquitylating enzymes. Publication history: Republished from Current BioData's Targeted Proteins database (TPdb; http://www.targetedproteinsdb.com).
Insights
The ubiquitin proteasome system (UPS) is crucial in diseases like cancer. New patented inhibitors targeting UPS components offer novel therapeutic strategies for various human conditions.
Area of Science:
- Biochemistry
- Molecular Biology
- Pharmacology
Background:
- The ubiquitin proteasome system (UPS) plays a critical role in cellular protein homeostasis.
- UPS dysregulation is linked to the development of numerous human diseases, including cancers and neurodegenerative disorders.
- The success of bortezomib (Velcade®) validates the UPS as a therapeutic target, particularly in oncology.
Purpose of the Study:
- To review recently patented proteasome inhibitors.
- To highlight novel small molecule inhibitors targeting specific UPS components, such as E3 ubiquitin ligases and deubiquitylating enzymes.
Main Methods:
- Literature review of patented proteasome inhibitors.
- Analysis of small molecule inhibitors targeting specific UPS enzymes.
- Information sourced from the Targeted Proteins database (TPdb).
Main Results:
- Identification of new patented proteasome inhibitors.
- Characterization of patented small molecule inhibitors with specificity for E3 ubiquitin ligases and deubiquitylating enzymes.
- The review consolidates recent advancements in UPS-targeted drug development.
Conclusions:
- The UPS remains a significant target for therapeutic intervention in human diseases.
- Patented inhibitors targeting specific UPS components represent promising avenues for future drug discovery.
- Continued research into UPS modulation holds potential for treating cancer and neurodegenerative conditions.
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