Immunoglobulins on the surface of differently charged polymer nanoparticles.
2020
The overall success of nanocarriers in biomedical applications depends on their interaction with different proteins in blood. Immunoglobulins as a major protein class of the blood proteome may considerably influence the identity of the nanocarriers in blood. However, there is a lack of knowledge about the specific details of the interaction mechanism between different immunoglobulins and nanocarriers. Therefore, the authors have investigated the interaction of different immunoglobulin classes—namely, immunoglobulin G, A, and M—with different polystyrene model nanoparticles. The authors report that immunoglobulin interaction with nanoparticles strongly depends on the immunoglobulin class and surface charge of the nanoparticles. Furthermore, upon adsorption on the nanoparticles’ surfaces, aggregation processes and denaturation of immunoglobulins were observed. This highlights the importance of nanocarriers’ design in order to prevent unfavorable denaturation and adsorption processes of immunoglobulins on nanoparticle surfaces.
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