期刊
JOURNAL OF BIOMEDICAL OPTICS
卷 14, 期 2, 页码 -出版社
SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
DOI: 10.1117/1.3078809
关键词
photoacoustic imaging; single-walled carbon nanotubes; molecular imaging; tumor targeting; alpha(v)beta(3) positive
资金
- National Natural Science Foundation of China [30870676, 30627003, 30800261]
- Natural Science Foundation of Guangdong Province [7117865]
Single-walled carbon nanotubes (SWNT) in a poly(ethylene)ghycol solution are a biocompatible transporters with strong optical absorption in the near-infrared region, in which the biological tissue is almost transparent with very low absorbance. Here, antibody-functionalized SWNTs for tumor early detection with photoacoustic molecular imaging in vivo are reported. To lay the groundwork for this goal and insure system stability, images were collected in tissue simulating phantoms to determine appropriate detectable concentrations of SWNTs. Preliminary in vitro and in vivo results showed that a high contrast and a high efficient targeting of integrin alpha(v)beta(3) positive U87 human glioblastoma tumours in mice could be achieved. The nontoxicity of functionalized SWNTs has also been demonstrated in our experiment; this feature ensures that SWNTs can be used for clinical applications. This study suggests that photoacoustic molecular imaging with antibody-functionalized SWNTs has the potential to be an effective early tumor diagnosis method. (C) 2009 Society of Photo-Optical Instrumentation Engineers. [DOI: 10.1117/1.3078809]
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