Related Experiment Video
Updated: Sep 14, 2025
11:22
Generation of Native, Untagged Huntingtin Exon1 Monomer and Fibrils Using a SUMO Fusion Strategy
Published on: June 27, 2018
8.1K
Probing How Anti-huntingtin Antibodies Bind the Fibrillar Fuzzy Coat Using Solid-State NMR.
Raffaella Parlato1, Greeshma Jain1, Alessia Lasorsa1
1Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 3, 9747 AG, Groningen, The Netherlands.
Chemistry (Weinheim an Der Bergstrasse, Germany)
|July 24, 2025
Summary
Researchers studied how MW8 antibodies interact with huntingtin protein (HTT) fibrils in Huntington's disease research. Antibody binding alters the structure of HTT fibrils, potentially reducing their toxic effects.
Area of Science:
- Biochemistry
- Neuroscience
- Immunology
Background:
- Antibodies are crucial for immune responses and research diagnostics.
- Huntington's disease (HD) involves CAG repeat expansions in the huntingtin (HTT) gene, leading to protein deposits.
- Anti-HTT antibodies are used in HD research, but their binding mechanisms with aggregated proteins are not fully understood.
Purpose of the Study:
- To investigate the interaction between MW8 antibodies and huntingtin exon 1 (HTTex1) fibrils.
- To understand how antibody binding affects the structure and dynamics of HTT fibrils.
Main Methods:
- Solid-state Nuclear Magnetic Resonance (MAS NMR)
- Electron microscopy
- Complementary biophysical techniques
Main Results:
- MW8 antibodies locally impact the exposed segments of HTTex1 fibrils, known as the "fuzzy coat".
- Antibody binding alters the structure and dynamics of the fuzzy coat.
- Antibody binding influences the formation of supramolecular fibril clusters, impacting cytotoxicity.
Conclusions:
- Antibody binding to HTT fibrils affects their structural features and aggregation propensity.
- Understanding these interactions is key for developing therapeutic strategies for Huntington's disease.
