期刊
NANO LETTERS
卷 9, 期 5, 页码 1798-1805出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl8037147
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资金
- National Institutes of Health/National Cancer Institute [5R01CA119412-04, 1R21CA128460-02]
Gastrin releasing protein receptor specific bombesin (BBN) peptide-gold nanoconjugates were successfully synthesized using gold nanorods and dithiolated peptide. The gold nanorod-bombesin (GNR-BBN) conjugates showed extraordinary in vitro stabilities against various biomolecules including NaCl, cysteine, histidine, bovine serum albumin, human serum albumin, and dithiothreitol. Quantitative measurements on the binding affinity (IC50) of GNR-BBN conjugates toward prostate and breast tumor cells were evaluated. The IC50 values establish that GNR-BBN conjugates have strong affinity toward the gastrin releasing peptide receptors on both the tumors. Detailed cellular interaction studies of GNR-BBN conjugates revealed that nanorods internalize via a receptor-mediated endocytosis pathway. The receptor specific interactions of GNR-BBN conjugates provide realistic opportunities in the design and development of in vivo molecular imaging and therapy agents for cancer.
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