Nano Archive

Mapping the Surface Adsorption Forces of Nanomaterials in Biological Systems

Xia, Xin R and Monteiro-Riviere, Nancy A and Mathur, Sanjay and Song, Xuefeng and Xiao, Lisong and Oldenberg, Steven J and Fadeel, Bengt and Riviere, Jim E (2011) Mapping the Surface Adsorption Forces of Nanomaterials in Biological Systems. ACS Nano .

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The biological surface adsorption index (BSAI) is a novel approach to characterize surface adsorption energy of nanomaterials that is the primary force behind nanoparticle aggregation, protein corona formation, and other complex interactions of nanomaterials within biological systems. Five quantitative nanodescriptors were obtained to represent the surface adsorption forces (hydrophobicity, hydrogen bond, polarity/polarizability, and lone-pair electrons) of the nanomaterial interaction with biological components. We have mapped the surface adsorption forces over 16 different nanomaterials. When the five-dimensional information of the nanodescriptors was reduced to two dimensions, the 16 nanomaterials were classified into distinct clusters according their surface adsorption properties. BSAI nanodescriptors are intrinsic properties of nanomaterials useful for quantitative structure-activity relationship (QSAR) model development. This is the first success in quantitative characterization of the surface adsorption forces of nanomaterials in biological conditions, which could open a quantitative avenue in predictive nanomedicine development, risk assessment, and safety evaluation of nanomaterials.

Item Type:Article
Subjects:NanoSafety > Environment, health and safety aspects of nanotechnology
ID Code:11801
Deposited By:Prof Nancy Monteiro-Riviere
Deposited On:02 Mar 2012 20:18
Last Modified:02 Mar 2012 20:18

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