Hyaluronic Acid Coated Chitosan Nanoparticles Reduced the Immunogenicity of the Formed Protein Corona
2017
Studying the interactions of nanoparticles (
NPs) with serum proteins is necessary for the rational development of
nanocarriers. Optimum surface chemistry is a key consideration to modulate the formation of the serum protein corona (PC) and the resultant immune response. We investigated the constituent of the PC formed by hyaluronic acid-coated chitosan
NPs(HA-CS
NPs). Non-decorated chitosan
NPs(CS
NPs) and alginate-coated chitosan
NPs(Alg-CS
NPs) were utilized as controls. Results show that HA surface modifications significantly reduced
protein adsorptionrelative to controls. Gene Ontology analysis demonstrates that HA-CS
NPswere the least immunogenic
nanocarriers. Indeed, less inflammatory proteins were adsorbed onto HA-CS
NPsas opposed to CS and Alg-CS
NPs. Interestingly, HA-CS
NPsdifferentially adsorbed two unique anti-inflammatory proteins (ITIH4 and AGP), which were absent from the PC of both controls. On the other hand, CS and Alg-CS
NPsselectively adsorbed a proinflammatory protein (
Clusterin) that was not found on the surfaces of HA-CS
NPs. While further studies are needed to investigate abilities of the PCs of only ITIH4 and AGP to modulate the interaction of
NPswith the host immune system, our results suggest that this proof-of-concept could potentially be utilized to reduce the immunogenicity of a wide range of nanomaterials.
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