Fibrilpaint: A Class of Amyloid-Targeting Peptides
Júlia Aragonès Pedrola1,2,3, Françoise A Dekker1,2,3, Katrin Guttmann3
1Cellular Protein Chemistry, Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht, The Netherlands.
Chemistry (Weinheim an Der Bergstrasse, Germany)
|August 5, 2026
Summary
Researchers developed FibrilPaints, modular peptides that bind amyloid fibrils in neurodegenerative diseases like Alzheimer's. These peptides can be modified for detecting or degrading Tau and Huntingtin protein aggregates.
Area of Science:
- Biochemistry
- Neuroscience
- Molecular Biology
Background:
- Amyloid fibrils are key pathological markers in neurodegenerative diseases.
- Current molecular tools for amyloid detection and manipulation are limited.
Purpose of the Study:
- To develop a novel class of modular peptides, FibrilPaints, for amyloid fibril recognition and functionalization.
- To investigate the binding properties of FibrilPaints to Tau and Huntingtin fibrils.
Main Methods:
- Design and synthesis of FibrilPaints, a modular peptide system.
- Systematic sequence variation of the amyloid-targeting unit (W5P4H3R2) to optimize binding affinity.
- Assessment of binding across Tau and Huntingtin fibrils.
Main Results:
- Identified W5P4H3R2 as a high-affinity amyloid-targeting unit with specific sequence requirements.
- Demonstrated that FibrilPaints bind effectively to both Tau and Huntingtin fibrils.
- Showcased the modularity of FibrilPaints, allowing attachment of functional moieties like fluorophores or E3-recruiting motifs.
Conclusions:
- FibrilPaints represent a versatile modular peptide system for targeting Tau and Huntingtin amyloid fibrils.
- This platform holds significant potential for developing new diagnostic and therapeutic strategies for neurodegenerative diseases.
- The adaptability of FibrilPaints opens avenues for targeted protein degradation and enhanced imaging of amyloid aggregates.
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