title: Development of nanoparticle libraries for biosensing.
abstract: Magnetic and magnetofluorescent nanoparticles have become important materials for biological applications especially for sensing, separation, and imaging. To achieve target specificity, these nanomaterials are often covalently modified with binding proteins such as antibodies or proteins. Here we report on the creation of nanoparticle libraries that achieve specificity through multivalent modification with small molecules. We explore different synthetic routes to attach small molecules with anhydride, amine, hydroxyl carboxyl, thiol, and epoxy handles. We show that the derived nanomaterials have unique biological functions, possess different behaviors in cell screens, and can be used as substrates for biological screens.
authors.affiliation: Center for Molecular Imaging Research, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02129-2060, USA.
authors.forename: Eric Yi
authors.initials: EY
authors.lastname: Sun
authors.forename: Lee
authors.initials: L
authors.lastname: Josephson
authors.forename: Kim A
authors.initials: KA
authors.lastname: Kelly
authors.forename: Ralph
authors.initials: R
authors.lastname: Weissleder
mesh_terms: D000588:Amines / Q000737:chemistry; D000812:Anhydrides / Q000737:chemistry; D015374:Biosensing Techniques; D002264:Carboxylic Acids / Q000737:chemistry; D004852:Epoxy Compounds / Q000737:chemistry; D006878:Hydroxides / Q000737:chemistry; D008280:Magnetics; D049329:Nanostructures / Q000737:chemistry*; D013438:Sulfhydryl Compounds / Q000737:chemistry
chemical_list: D000588:Amines; D000812:Anhydrides; D002264:Carboxylic Acids; D004852:Epoxy Compounds; D006878:Hydroxides; D013438:Sulfhydryl Compounds; C031356:hydroxide ion