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Photo-targeted nanoparticles.


ABSTRACT: We report a novel and simple proof-of-concept of a nanoparticulate system that targets any tissue selectively upon illumination. Nanoparticles were covalently functionalized with the amino acid sequence YIGSR, which adheres to the beta1 integrins present on most cell surfaces. This peptide was masked with a caging group, rendering it biologically inert. Illumination with UV light released the caging group from the YIGSR, allowing binding to cells.

SUBMITTER: Dvir T 

PROVIDER: S-EPMC2806491 | biostudies-literature | 2010 Jan

REPOSITORIES: biostudies-literature

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Photo-targeted nanoparticles.

Dvir Tal T   Banghart Matthew R MR   Timko Brian P BP   Langer Robert R   Kohane Daniel S DS  

Nano letters 20100101 1


We report a novel and simple proof-of-concept of a nanoparticulate system that targets any tissue selectively upon illumination. Nanoparticles were covalently functionalized with the amino acid sequence YIGSR, which adheres to the beta1 integrins present on most cell surfaces. This peptide was masked with a caging group, rendering it biologically inert. Illumination with UV light released the caging group from the YIGSR, allowing binding to cells. ...[more]

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