Related Experiment Video
Updated: May 26, 2026
10:12
Construction of Cyclic Cell-Penetrating Peptides for Enhanced Penetration of Biological Barriers
Published on: September 19, 2022
Stapled peptides for intracellular drug targets
Gregory L Verdine1, Gerard J Hilinski
1Department of Chemistry and Chemical Biology, Harvard University, and Program in Cancer Chemical Biology, Dana - Farber Cancer Institute, Boston, Massachusetts, USA.
Methods in Enzymology
|January 11, 2012
Summary
Hydrocarbon-stapled peptides are a novel class of miniproteins that can target challenging intracellular proteins. This technology enhances peptide properties for drug discovery and therapeutic applications.
Area of Science:
- Biochemistry
- Medicinal Chemistry
- Drug Discovery
Background:
- Intracellular protein-protein interactions are key biological targets but are difficult to drug with traditional small molecules or protein therapeutics.
- Existing drug modalities face limitations in targeting these specific, often hydrophobic, interaction surfaces within cells.
Purpose of the Study:
- To discuss the design and evaluation of hydrocarbon-stapled α-helical peptides for targeting intractable intracellular proteins.
- To highlight the potential of stapled peptides as next-generation therapeutics combining protein recognition with cell penetration.
Main Methods:
- Introduction of an all-hydrocarbon staple to lock peptides into an α-helical conformation.
- Utilizing site-specific chemical modifications to create synthetic miniproteins.
Main Results:
- Stapling enhances peptide target affinity, proteolytic resistance, and serum half-life.
- Stapled peptides demonstrate improved cell penetration via endocytic vesicle trafficking.
Conclusions:
- Hydrocarbon-stapled peptides offer a promising approach for developing therapeutics against previously undruggable intracellular targets.
- This technology has broad potential for both basic biological research and clinical applications.
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