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Related Experiment Video

Updated: Oct 17, 2025

A Liquid Phase Affinity Capture Assay Using Magnetic Beads to Study Protein-Protein Interaction: The Poliovirus-Nanobody Example

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Published on: May 29, 2012

Aggregation Properties of Albumin in Interacting with Magnetic Fluids.

Elena N Velichko¹, Elina K Nepomnyashchaya¹, Maksim A Baranov¹

¹Institute of Electronics and Telecommunications, Peter the Great St. Petersburg Polytechnic University, 195251 Saint Petersburg, Russia.

International Journal of Molecular Sciences

|October 13, 2021

Summary

Interactions between iron oxide nanoparticles and albumin were studied. Low concentrations of nanoparticles enhanced albumin film stability, while high concentrations disrupted it, impacting biomolecular film applications.

Keywords:

dynamic light scattering magnetic fluid molecular electronics nanoparticle sizing protein–nanoparticle interaction self-organization

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Luminophore Formation in Various Conformations of Bovine Serum Albumin by Binding of GoldIII

Luminophore Formation in Various Conformations of Bovine Serum Albumin by Binding of GoldIII

Published on: August 31, 2018

Area of Science:

Biomaterials Science
Nanotechnology
Physical Chemistry

Background:

Serum albumin is a crucial biomolecule with diverse applications.
Interactions between biomolecules and magnetic nanoparticles are vital for developing advanced materials.
Understanding these interactions is key to controlling the properties of biomolecular films.

Purpose of the Study:

To investigate the effects of iron(II,III) oxide (Fe3O4) magnetic nanoparticles on serum albumin in aqueous solutions.
To characterize the formation of aggregates and the stability of resulting biomolecular films.
To determine optimal concentrations of Fe3O4 nanoparticles for stable albumin-based films.

Main Methods:

Laser correlation spectroscopy was used to analyze particle sizes in solution.
Optical analysis of dehydrated films assessed structural morphology and stability.
Studies were conducted across a range of Fe3O4 nanoparticle concentrations.

Main Results:

Low Fe3O4 concentrations (up to 10^-6 g/L) formed small aggregates (up to 300 nm), enhancing albumin film stability and spiral structure formation.
High Fe3O4 concentrations (from 10^-4 g/L) led to large aggregates (>1000 nm), disrupting film morphology and decreasing stability.
Optimal stability was observed at Fe3O4 concentrations below 10^-4 g/L, correlating with small albumin-nanoparticle aggregates.

Conclusions:

The concentration of Fe3O4 magnetic nanoparticles significantly influences the aggregation behavior with albumin and the stability of biomolecular films.
Low concentrations promote stable structures, while high concentrations lead to instability.
These findings are crucial for predicting and controlling the stability of biomolecular films incorporating magnetic nanoparticles.