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Updated: Oct 3, 2025

Evaluation of Substrate Ubiquitylation by E3 Ubiquitin-ligase in Mammalian Cell Lysates
Published on: May 10, 2022
Recent advances in the pharmacological targeting of ubiquitin-regulating enzymes in cancer
Ana Maria Montagut1, Marc Armengol2, Gema Gorjón de Pablo1
1Grup de Química Farmacèutica, IQS School of Engineering, Universitat Ramon Llull, Barcelona, Spain.
Abstract:
As a post-translational modification that has pivotal roles in protein degradation, ubiquitination ensures that intracellular proteins act in a precise spatial and temporal manner to regulate diversified cellular processes. Perturbation of the ubiquitin system contributes directly to the onset and progression of a wide variety of diseases, including various subtypes of cancer. This highly regulated system has been for years an active research area for drug discovery that is exemplified by several approved drugs. In this review, we will provide an update of the main breakthrough scientific discoveries that have been leading the clinical development of ubiquitin-targeting therapies in the last decade, with a special focus on E1 and E3 modulators. We will further discuss the unique challenges of identifying new potential therapeutic targets within this ubiquitous and highly complex machinery, based on available crystallographic structures, and explore chemical approaches by which these challenges might be met.
Insights
Ubiquitination, a key protein regulator, is crucial for cellular processes and implicated in cancer. This review highlights recent advances in ubiquitin-targeting therapies, focusing on E1 and E3 modulators for drug discovery.
Area of Science:
- Biochemistry
- Molecular Biology
- Drug Discovery
Background:
- Ubiquitination is a vital post-translational modification regulating protein degradation and cellular functions.
- Dysregulation of the ubiquitin system is linked to cancer and other diseases.
- The ubiquitin system is a validated target for drug development, with existing approved therapies.
Purpose of the Study:
- To review recent breakthroughs in ubiquitin-targeting therapies over the past decade.
- To focus on E1 and E3 enzyme modulators.
- To discuss challenges and chemical strategies for identifying new therapeutic targets in the ubiquitin machinery.
Main Methods:
- Literature review of recent scientific discoveries.
- Analysis of crystallographic structures for target identification.
- Exploration of chemical approaches for drug development.
Main Results:
- Significant progress has been made in developing ubiquitin-targeting therapies.
- E1 and E3 modulators represent key areas of focus in recent drug discovery efforts.
- Crystallographic data offers insights into targeting the complex ubiquitin machinery.
Conclusions:
- Ubiquitin-modulating therapies hold significant promise for treating various diseases, particularly cancer.
- Overcoming challenges in target identification is crucial for advancing ubiquitin-based drug discovery.
- Continued exploration of chemical strategies is essential for realizing the full therapeutic potential of the ubiquitin system.
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