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Radiolabeled, Antibody-Conjugated Manganese Oxide Nanoparticles for Tumor Vasculature Targeted Positron Emission Tomography and Magnetic Resonance Imaging
Journal article   Peer reviewed

Radiolabeled, Antibody-Conjugated Manganese Oxide Nanoparticles for Tumor Vasculature Targeted Positron Emission Tomography and Magnetic Resonance Imaging

Yonghua Zhan, Sixiang Shi, Emily B. Ehlerding, Stephen A. Graves, Shreya Goel, Jonathan W. Engle, Jimin Liang, Jie Tian and Weibo Cai
ACS applied materials & interfaces, Vol.9(44), pp.38304-38312
11/08/2017
DOI: 10.1021/acsami.7b12216
PMCID: PMC5680099
PMID: 29028311
url
https://www.ncbi.nlm.nih.gov/pmc/articles/5680099View
Open Access

Abstract

Manganese oxide nanoparticles (Mn3O4 NPs) have attracted a great deal of attention in the field of biomedical imaging because of their ability to create an enhanced imaging signal in MRI as novel potent T-1 contrast agents. In this study, we present tumor vasculature-targeted imaging in mice using Mn3O4 NPs through conjugation to the anti-CD105 antibody TRC105 and radionuclide copper-64 (Cu-64, t(1/2): 12.7 h). The Mn3O4 conjugated NPs, Cu-64-NOTAMn(3)O(4)@PEG-TRC105, exhibited sufficient stability in vitro and in vivo. Serial positron emission tomography (PET) and magnetic resonance imaging (MRI) studies evaluated the pharmacokinetics and demonstrated targeting of Cu-64-NOTA-Mn3O4@PEG-TRC105 to 4T(1) murine breast tumors in vivo, compared to Cu-64-NOTA-Mn3O4@PEG. The specificity of Cu-64-NOTA-Mn3O4@PEG-TRC105 for the vascular marker CD105 was confirmed through in vivo, in vitro, and ex vivo experiments. Since Mn3O4 conjugated NPs exhibited desirable properties for T1 enhanced imaging and low toxicity, the tumor-specific Mn3O4 conjugated NPs reported in this study may serve as promising multifunctional nanoplatforms for precise cancer imaging and diagnosis.
Materials Science Technology Materials Science, Multidisciplinary Nanoscience & Nanotechnology Science & Technology Science & Technology - Other Topics

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