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Updated: Jun 2, 2026

Evaluation of Substrate Ubiquitylation by E3 Ubiquitin-ligase in Mammalian Cell Lysates
Published on: May 10, 2022
Ubiquitin-specific proteases as cancer drug targets
Wolfgang Sippl1, Vincent Collura, Frédéric Colland
1Department of Pharmaceutical Chemistry, Martin-Luther-University Halle-Wittenberg, Halle, Germany.
Abstract:
Ubiquitin-specific proteases are deubiquitinating enzymes involved in the removal of ubiquitin from specific protein substrates resulting in protein salvage from proteasome degradation, regulation of protein localization or activation. DNA alteration and overexpression in different cancer types, as well as involvement in many cancer-associated pathways, make ubiquitin-specific proteases attractive for the cancer drug discovery purposes. Their proteolytic function associated to available structural biology data reinforce their potential for pharmacological interference. Here, we review this class of enzymes as cancer drug targets in terms of validation and druggability.
Insights
Ubiquitin-specific proteases (USPs) are key enzymes in cancer pathways. Their role in protein regulation and potential for drug development make them promising cancer drug targets.
Area of Science:
- Biochemistry and Molecular Biology
- Oncology
- Drug Discovery
Background:
- Ubiquitin-specific proteases (USPs) are enzymes that remove ubiquitin from proteins.
- This process is crucial for protein stability, localization, and activation.
- Dysregulation of USPs, including DNA alteration and overexpression, is observed in various cancers, implicating them in cancer-associated pathways.
Purpose of the Study:
- To review ubiquitin-specific proteases (USPs) as potential cancer drug targets.
- To evaluate the validation and druggability of USPs in cancer therapy.
- To highlight the pharmacological potential of targeting USP proteolytic activity.
Main Methods:
- Literature review of USP functions in cancer.
- Analysis of structural biology data related to USPs.
- Assessment of USP involvement in cancer-associated pathways.
- Evaluation of USP druggability for therapeutic intervention.
Main Results:
- USPs play significant roles in cancer development and progression.
- Their enzymatic activity and involvement in protein homeostasis present therapeutic opportunities.
- Structural data supports the potential for designing inhibitors against USPs.
- USPs are validated as promising targets for cancer drug discovery.
Conclusions:
- Ubiquitin-specific proteases represent a validated class of drug targets for cancer therapy.
- The druggability of USPs, supported by structural and functional data, offers significant potential for pharmacological intervention.
- Targeting USPs could lead to novel therapeutic strategies for various cancer types.
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