Journal
ACS NANO
Volume 1, Issue 4, Pages 258-264Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn700062z
Keywords
dendrimer; scintigraphy; near-infrared; fluorescence imaging; multiple modalities; multiple colors; lymphatic imaging
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Funding
- Intramural NIH HHS [Z99 CA999999, Z01 BC010654-03] Funding Source: Medline
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Current contrast agents generally have one function and (an 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.
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