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Published on: November 9, 2020
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Assays and technologies for developing proteolysis targeting chimera degraders
Xingui Liu1, Xuan Zhang2, Dongwen Lv1
1Department of Pharmacodynamics, College of Pharmacy, University of Florida, 1333 Center Drive, Gainesville, FL 32610, USA.
Future Medicinal Chemistry
|May 21, 2020
Summary
Small molecules called proteolysis targeting chimeras (PROTACs) offer a new drug discovery approach. This review details assays for understanding PROTAC mechanisms and improving their rational design.
Area of Science:
- Biochemistry
- Molecular Biology
- Drug Discovery
Background:
- Targeted protein degradation is a novel therapeutic strategy.
- Proteolysis targeting chimeras (PROTACs) harness the ubiquitin-proteasome system to degrade specific proteins.
- Current PROTAC design is largely empirical due to complex degradation mechanisms.
Purpose of the Study:
- To review biochemical and biophysical assays for dissecting PROTAC mechanisms.
- To highlight the importance of step-by-step profiling along the degradation pathway.
- To discuss the potential of novel techniques for expanding the PROTAC toolbox.
Main Methods:
- Biochemical assays to assess protein ubiquitination and proteasomal degradation.
- Biophysical techniques to study PROTAC-protein-ligase ternary complex formation.
- Analysis of structure-activity relationships through step-wise profiling.
Main Results:
- Established assays provide critical insights into PROTAC-induced degradation.
- Understanding each step of the ubiquitin-proteasome pathway is key for PROTAC optimization.
- Empirical design can be advanced by systematic mechanistic studies.
Conclusions:
- Systematic profiling using biochemical and biophysical assays is essential for rational PROTAC design.
- Expanding the assay toolbox will further enhance the development of targeted protein degraders.
- This approach facilitates the optimization of PROTACs for drug discovery.
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