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Related Experiment Video

Updated: Jul 19, 2026

Screening and Identification of Small Peptides Targeting Fibroblast Growth Factor Receptor2 using a Phage Display Peptide Library

Screening and Identification of Small Peptides Targeting Fibroblast Growth Factor Receptor2 using a Phage Display Peptide Library

Published on: September 30, 2019

Phage display screening for peptides that inhibit polyglutamine aggregation.

Daniel J Kenan¹, Warren J Strittmatter, James R Burke

¹Duke University Medical Center, Department of Medicine (Neurology) and Deane Laboratory, Durham, North Carolina, USA.

Methods in Enzymology

|October 19, 2006

Summary

Researchers identified a novel peptide motif that inhibits the aggregation of expanded polyglutamine proteins, offering a potential therapeutic strategy for neurodegenerative diseases like Huntington's disease.

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Area of Science:

Neuroscience
Molecular Biology
Genetics

Background:

Expanded polyglutamine proteins cause nine inherited neurodegenerative diseases, such as Huntington's disease.
Current therapies do not prevent disease onset or progression.

Purpose of the Study:

To identify a novel therapeutic agent targeting expanded polyglutamine domains.
To develop a method for screening peptide libraries against disease-causing protein aggregates.

Main Methods:

Screening of phage-displayed peptide libraries to identify binders to expanded polyglutamine repeats.
In vitro aggregation inhibition assays.
Cellular and Drosophila models of polyglutamine repeat diseases to assess therapeutic efficacy.

Main Results:

A specific peptide motif was identified that effectively inhibits polyglutamine aggregation in vitro.
This peptide motif demonstrated efficacy in preventing cell death in cellular models.
The peptide also showed therapeutic benefits in Drosophila models of polyglutamine diseases.

Conclusions:

Phage display is a successful approach for identifying novel therapeutic peptides against protein aggregation diseases.
The identified peptide motif holds promise as a therapeutic candidate for Huntington's disease and potentially other polyglutamine-related disorders.
This screening methodology can be adapted for discovering therapeutics for other conformational diseases like Alzheimer's and Parkinson's.