DUBs and disease: activity assays for inhibitor development
1The Netherlands Cancer Institute, Division of Cellular Biochemistry, Plesmanlaan 121, Amsterdam, The Netherlands.
Abstract:
Deubiquitinating enzymes (DUBs) cleave ubiquitin from substrate proteins and so influence the biochemical properties of these proteins, such as their half-life, by a reduction in proteasomal degradation. Several DUBs have been demonstrated to deubiquitinate oncogenic proteins and tumor suppressors, and their activities have been implicated in numerous processes related to disease, including cancer and neurodegeneration. The importance of various DUBs is well established, but the understanding of both their selectivity and reactivity in the ubiquitin-proteasome system is comparatively poor. In this review, the published methods that are available to study DUB action in vitro and their application in finding inhibitors are discussed.
Insights
Deubiquitinating enzymes (DUBs) remove ubiquitin, impacting protein stability and disease processes like cancer. This review explores methods to study DUB activity and identify potential inhibitors.
Area of Science:
- Biochemistry
- Molecular Biology
- Enzymology
Background:
- Deubiquitinating enzymes (DUBs) regulate protein stability by cleaving ubiquitin, influencing proteasomal degradation.
- DUB activity is linked to diseases such as cancer and neurodegeneration, affecting oncogenic proteins and tumor suppressors.
- Despite their importance, the selectivity and reactivity of DUBs within the ubiquitin-proteasome system remain poorly understood.
Purpose of the Study:
- To review established in vitro methods for studying deubiquitinating enzyme (DUB) action.
- To discuss the application of these methods in the discovery of DUB inhibitors.
- To highlight the current gaps in understanding DUB selectivity and reactivity.
Main Methods:
- Literature review of published in vitro assays for DUB activity.
- Analysis of methods used for screening and characterizing DUB inhibitors.
- Discussion of techniques applicable to studying DUB selectivity and kinetics.
Main Results:
- Various in vitro methods exist to analyze DUB enzymatic activity.
- These methods are crucial for identifying small molecules that modulate DUB function.
- The review consolidates knowledge on studying DUBs, aiding future research.
Conclusions:
- In vitro assays are essential tools for investigating deubiquitinating enzyme mechanisms.
- Understanding DUBs is critical for developing targeted therapies for diseases like cancer.
- Further research is needed to fully elucidate DUB selectivity and reactivity for improved therapeutic strategies.
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