Multimodal nanoprobes for radionuclide and five-color near-infrared optical lymphatic imaging.
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.
Kobayashi
Hisataka
H
Molecular Imaging Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892-1088,USA. kobayash@mail.nih.gov
Koyama
Yoshinori
Y
Barrett
Tristan
T
Hama
Yukihiro
Y
Regino
Celeste A S
CA
Shin
In Soo
IS
Jang
Beom-Su
BS
Le
Nhat
N
Paik
Chang H
CH
Choyke
Peter L
PL
Urano
Yasuteru
Y
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
D050091:Dendrimers; D005456:Fluorescent Dyes