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Updated: May 13, 2025
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A11-positive β-amyloid Oligomer Preparation and Assessment Using Dot Blotting Analysis
Published on: May 22, 2018
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Cells proliferation on surfaces functionalized with amyloid beta peptide fibrils
Mihaela Beregoi1, Sara Nistor2, Iulia Corina Ciobotaru1
1National Institute of Materials Physics, Functional Nanostructures Laboratory, 405A Atomiștilor St., 077125 Măgurele, Romania.
International Journal of Biological Macromolecules
|April 16, 2025
Summary
This study developed novel nanostructured biointerfaces for studying amyloid beta (Aβ) peptides, crucial for Alzheimer's disease research. These materials support neuronal cell growth and maintain integrity, showing promise for neuromorphic engineering applications.
Area of Science:
- Biomaterials Science
- Neuroscience
- Nanotechnology
Background:
- Amyloid beta (Aβ) peptide aggregates are key Alzheimer's disease biomarkers, but their physiological roles require further elucidation.
- Developing advanced biointerfaces is crucial for understanding Aβ peptide interactions and disease mechanisms.
- Conductive, biocompatible nanostructured materials offer potential for studying neuronal cell behavior and Aβ aggregation.
Purpose of the Study:
- To investigate the aggregation, fibrillation, and interaction of Aβ peptides with novel conductive nanostructured materials.
- To fabricate and characterize functionalized and non-functionalized surfaces for neuronal cell applications.
- To assess the biocompatibility and stability of these nanostructured surfaces for neuromorphic engineering.
Main Methods:
- Fabrication of conductive, nanostructured surfaces (gold-coated glass and electrospun fibers).
- Surface functionalization with Aβ40 fibrils, poly-l-lysine, collagen, and inverse-Aβ40 peptide.
- Characterization via SEM, XRD, AFM, contact angle, and electrical measurements.
- Biological assessment using MTS assays, fluorescence imaging, and SEM with fibroblast and neuroblastoma cell lines.
Main Results:
- Developed nanostructured surfaces exhibited biocompatibility with fibroblast L929 and neuroblastoma SH-SY5Y cells.
- Cell viability on the developed surfaces was comparable to control groups.
- The nanostructured materials maintained structural integrity when exposed to proteases.
- Characterization confirmed the structural and electrical properties of the fabricated scaffolds.
Conclusions:
- The developed nanostructured biointerfaces are suitable for studying amyloid beta peptide interactions.
- These materials demonstrate excellent biocompatibility and stability, supporting neuronal cell growth.
- The promising properties suggest potential applications in advanced neuromorphic engineering devices.
