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Advisor(s)
Abstract(s)
Gold core mesoporous silica shell (AuMSS) nanorods are multifunctional nanomedicines that can act simultaneously as photothermal, drug delivery, and bioimaging agents.
Nevertheless, it is reported that once administrated, nanoparticles can be coated with blood proteins, forming a protein corona, that directly impacts on nanomedicines’ circulation time, biodistribution, and therapeutic performance. Therefore, it become crucial to develop novel alternatives to improve nanoparticles’ half-life in the bloodstream. In this work, Polyethylenimine (PEI) and Red blood cells (RBC)-derived membranes were combined for the first time to functionalize AuMSS nanorods and simultaneously load acridine orange (AO). The obtained results revealed that the RBC 41 derived membranes promoted the neutralization of the AuMSS’ surface charge and consequently improved the colloidal stability and biocompatibility of the nanocarriers.
Indeed, the in vitro data revealed that PEI/RBC-derived membranes’ functionalization also improved the nanoparticles’ cellular internalization and was capable of mitigating the hemolytic effects of AuMSS and AuMSS/PEI nanorods. In turn, the combinatorial chemo-photothermal therapy mediated by AuMSS/PEI/RBC_AO nanorods was able to completely eliminate HeLa cells, contrasting with the less efficient standalone therapies.
Such data reinforce the potential of AuMSS nanomaterials to act simultaneously as photothermal and chemotherapeutic agents.
Description
Keywords
Cancer Drug delivery Gold core silica shell nanorods Photothermal therapy PEI RBC-derived membranes
Citation
Publisher
Elsevier