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Nanopore Identification of Polyglutamine Length via Cross-Slit Sensing
Changxiong Huang1,2, Huan Chen1, Jun Luo1
1Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong 999077, China.
The Journal of Physical Chemistry Letters
|November 18, 2024
Summary
This study introduces a novel nanoslit sensor for determining polyglutamine (polyQ) length, crucial for Huntington
Area of Science:
- Proteomics
- Biophysics
- Materials Science
Background:
- Nanopore sensing offers sensitive analytical proteomics.
- Polyglutamine (polyQ) length determination is vital for Huntington's disease screening.
Purpose of the Study:
- To computationally develop a cross-nanoslit detection method for polyQ length.
- To explore a graphene-hexagonal boron nitride heterostructure for peptide sensing.
Main Methods:
- Designed a 2D graphene/hexagonal boron nitride heterostructure with an embedded hBN strip.
- Utilized an external electric field to regulate polyQ peptide transport.
- Analyzed time-dependent electric signals using machine learning models.
Main Results:
- Polyglutamine peptides linearly stretched on the hBN stripe.
- Machine learning models accurately determined polyQ peptide length from signal features.
- Demonstrated effective regulation of molecular transport via electric fields.
Conclusions:
- The proposed nanoslit-sensing method accurately determines polyQ length.
- This approach offers theoretical guidance for 2D heterostructure design in disease screening.
- Highlights potential for rapid screening of protein-related diseases.
