期刊
NANOSCALE
卷 10, 期 15, 页码 6861-6871出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8nr02513d
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资金
- National Cancer Institute [R01CA177716, U01CA198892]
- Prayers from Maria Children's Glioma Foundation
- Angie Fowler AYA Cancer Research Initiative of the Case Comprehensive Cancer Center
- NIH Interdisciplinary Biomedical Imaging Training Program [T32EB007509]
- NATIONAL CANCER INSTITUTE [U01CA198892, R01CA177716] Funding Source: NIH RePORTER
- NATIONAL INSTITUTE OF BIOMEDICAL IMAGING AND BIOENGINEERING [T32EB007509] Funding Source: NIH RePORTER
Metastasis displays a highly heterogeneous cellular population with cancer cells continuously evolving. As a result, a single-ligand nanoparticle cannot account for the continuously changing expression of targetable biomarkers over time and space. To effectively direct nanoparticles to metastasis, we developed a multi-ligand nanoparticle by using four different types of ligands on the same nanoparticle that target biomarkers on the endothelium associated with metastatic disease. These vascular targets included alpha(v)beta(3) integrin, P-selectin, EGFR and fibronectin. Using terminal and in vivo imaging studies, the targeting performance of the multi-ligand nanoparticles was compared to the single-ligand nanoparticle variants. All four single-ligand nanoparticle variants achieved significant targeting of lung metastasis in the 4T1 mouse model of breast cancer metastasis with about 2.5% of the injected dose being deposited into metastasis. A dual-ligand nanoparticle resulted in a nearly 2-fold higher deposition into lung metastases than its single-ligand counterparts. The multi-ligand nanoparticle significantly outperformed its targeting nanoparticle counterparts achieving a deposition of similar to 7% of its injected nanoparticles into lung metastases. Using the high sensitivity of radionuclide imaging, PET imaging showed that a multiligand nanoparticle labeled with [F-18] fluoride was able to precisely target metastatic disease at its very early stage of development in three different animal models of metastatic breast cancer.
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