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Gold Nanoparticle-Membrane Interactions: Implications in Biomedicine

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There has been an increase in the research towards the use of nanoparticles as a promising tool for nanomedicine, from imagenology, drug and gene delivery, to phototherapy. Little is known regarding the interaction between nanoparticles and cell membranes despite its importance to achieve an efficient therapy avoiding adverse effects, such as cytotoxicity and accumulation in undesired targets. Gold nanoparticles have demonstrated to be a perfect candidate to use in biological systems because of their dimension, ease of characterization, biocompatibility, and ability to conjugate to different compounds, such as active peptides. There are different biophysical properties such as: shape, size, conjugation, surface charge and ligand arrangement that affect gold nanoparticle-membrane interactions. In this review we will analyze how these properties are involved in the mechanisms of interaction with membranes and the internalization pathways of gold nanoparticle systems into cells. A new approach towards gold nanoparticles systems and model lipid membranes is rising to better understand this interaction at an atomic level in order to extrapolate it to a cellular level. We will discuss how gold nanoparticles interact with lipid membrane models and cell membranes analyzing its relationship to cell penetration, which is relevant for drug delivery.
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Keywords: CELL MEMBRANE; DRUG DELIVERY; GOLD NANOPARTICLES; LIPID MEMBRANE MODEL; NANOTOXICOLOGY

Document Type: Review Article

Publication date: 01 February 2013

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  • Journal of Biomaterials and Tissue Engineering (JBT) is an international peer-reviewed journal that covers all aspects of biomaterials, tissue engineering and regenerative medicine. The journal focuses on the broad spectrum of research topics including all types of biomaterials, their properties, bioimplants and medical devices, biofilms, bioimaging, BioMEMS/NEMS, biosensors, fibers, tissue scaffolds, tissue engineering and modeling, artificial organs, tissue interfaces, interactions between biomaterials, blood, cells, tissues, and organs, regenerative medicine and clinical performance.
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