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Silver nanoparticles alter the dimerization of Aβ42 studied by REMD simulations
Quynh Mai Thai1,2, Phuong-Thao Tran3, Huong T T Phung4
1Laboratory of Biophysics, Institute of Advanced Study in Technology, Ton Duc Thang University Ho Chi Minh City Vietnam ngosontung@tdtu.edu.vn.
RSC Advances
|May 9, 2024
Summary
Silver nanoparticles may inhibit amyloid beta (Aβ) oligomerization, a key process in Alzheimer
Area of Science:
- Biochemistry
- Neuroscience
- Materials Science
Background:
- Amyloid beta (Aβ) peptide aggregation is linked to Alzheimer's disease (AD).
- Aβ oligomerization in various environments contributes to neurotoxicity in AD patients.
- Developing effective inhibitors for neurotoxic Aβ forms is crucial for AD treatment.
Purpose of the Study:
- To investigate the influence of silver nanoparticles on Aβ peptide oligomerization.
- To understand the mechanisms by which silver nanoparticles affect Aβ aggregation.
- To explore Aβ inhibitor pathways for potential AD therapeutic strategies.
Main Methods:
- Temperature replica-exchange molecular dynamics (REMD) simulations were employed.
- Oligomerization of dimeric Aβ peptides was studied with and without silver nanoparticles.
- Analysis included intermolecular contact maps and free energy landscapes.
Main Results:
- Silver nanoparticles alter the oligomerization process of dimeric Aβ peptides.
- Specific metrics show differences in Aβ aggregation in the presence of silver nanoparticles.
- Insights into the physical mechanisms influencing Aβ oligomerization were obtained.
Conclusions:
- Silver nanoparticles show potential as inhibitors of Aβ oligomerization.
- Understanding nanoparticle interactions with Aβ is vital for developing AD therapies.
- This study provides a basis for exploring Aβ inhibitor pathways.
