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Author Spotlight: Evaluating Biophysical Assays for Characterizing PROTACS Ternary Complexes
Published on: January 12, 2024
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Reversible Assembly of Proteolysis Targeting Chimeras.
Weijun Gui1, Sarah F Giardina2, Madeline Balzarini1
1Department of Chemistry, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, 120 Scripps Way, Jupiter, Florida 33458, United States.
ACS Chemical Biology
|July 9, 2023
Summary
Self-Assembled Proteolysis Targeting Chimeras overcome PROTAC limitations. These novel molecules avoid the hook effect, enabling efficient target degradation without dose-response issues for improved therapeutic potential.
Area of Science:
- Biochemistry
- Molecular Biology
- Medicinal Chemistry
Background:
- PROteolysis TArgeting Chimeras (PROTACs) are promising for drug development.
- PROTACs exhibit limitations including poor drug-like properties and the hook effect, hindering in vivo application.
- The hook effect is a phenomenon where high PROTAC concentrations inhibit target degradation.
Purpose of the Study:
- To develop novel PROTACs that circumvent the hook effect.
- To engineer PROTACs with improved drug-like properties and in vivo applicability.
Main Methods:
- Designed PROTACs with functionalities for rapid, reversible covalent assembly in cells.
- Equipped target protein and E3 ligase ligands with self-assembling functionalities.
- Developed Self-Assembled Proteolysis Targeting Chimeras (SAPCs).
Main Results:
- SAPCs successfully mediated target protein degradation.
- The developed PROTACs did not exhibit the hook effect.
- Achieved efficient degradation of the Von Hippel-Lindau E3 ubiquitin ligase.
Conclusions:
- Self-assembled PROTACs offer a viable strategy to overcome the hook effect.
- This approach enhances the therapeutic potential of PROTAC technology.
- SAPCs represent a promising advancement in targeted protein degradation therapies.
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