title: Multimodal nanoprobes for radionuclide and five-color near-infrared optical lymphatic imaging.
abstract: Current contrast agents generally have one function and can only be imaged in monochrome; therefore, the majority of imaging methods can only impart uniparametric information. A single nanoparticle has the potential to be loaded with multiple payloads. Such multimodality probes have the ability to be imaged by more than one imaging technique, which could compensate for the weakness or even combine the advantages of each individual modality. Furthermore, optical imaging using different optical probes enables us to achieve multicolor in vivo imaging, wherein multiple parameters can be read from a single image. To allow differentiation of multiple optical signals in vivo, each probe should have a close but different near-infrared emission. To this end, we synthesized nanoprobes with multimodal and multicolor potential, which employed a polyamidoamine dendrimer platform linked to both radionuclides and optical probes, permitting dual-modality scintigraphic and five-color near-infrared optical lymphatic imaging using a multiple-excitation spectrally resolved fluorescence imaging technique.
authors.affiliation: Molecular Imaging Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892-1088,USA. kobayash@mail.nih.gov
authors.forename: Hisataka
authors.initials: H
authors.lastname: Kobayashi
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Koyama
authors.forename: Tristan
authors.initials: T
authors.lastname: Barrett
authors.forename: Yukihiro
authors.initials: Y
authors.lastname: Hama
authors.forename: Celeste A S
authors.initials: CA
authors.lastname: Regino
authors.forename: In Soo
authors.initials: IS
authors.lastname: Shin
authors.forename: Beom-Su
authors.initials: BS
authors.lastname: Jang
authors.forename: Nhat
authors.initials: N
authors.lastname: Le
authors.forename: Chang H
authors.initials: CH
authors.lastname: Paik
authors.forename: Peter L
authors.initials: PL
authors.lastname: Choyke
authors.forename: Yasuteru
authors.initials: Y
authors.lastname: Urano
mesh_terms: D000818:Animals; D002417:Cattle; D002851:Chromatography, High Pressure Liquid; D003116:Color; D050091:Dendrimers / Q000737:chemistry; D005260:Female; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D006801:Humans; D007259:Infrared Rays; D008196:Lymph / Q000000981:diagnostic imaging*; D051379:Mice; D049329:Nanostructures / Q000737:chemistry*; D011877:Radionuclide Imaging
chemical_list: D050091:Dendrimers; D005456:Fluorescent Dyes