Abstract
Purpose
The purpose of this study was to investigate the potential of the phagocytic activity of lipopolysaccharide (LPS) induced neutrophils that are mannan coated with superparamagnetic iron oxide nanoparticles (M-SPION).
Procedures
Human neutrophils were divided into control and LPS groups. The neutrophils were labeled with M-SPION and dextran-coated SPION. After labeling of M-SPION, the mean signal intensity (SI) of the LPS group was significantly lower than that of the control group.
Results
The labeling of both control and LPS groups with M-SPION showed significantly lower SI than those labeled with D-SPION. After labeling with M-SPION, the intracellular iron uptake of neutrophil in Prussian blue staining was markedly demonstrated in the LPS group, but not in the control group. M-SPION was more effective than D-SPION in the labeling of neutrophils in vitro.
Conclusions
The in vitro labeling technique of LPS neutrophil with M-SPION on MR imaging could be developed into a diagnostic method of LPS-induced neutrophils.
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Acknowledgments
This research was supported by Leading Foreign Research Institute Recruitment Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (MEST) (2011–0030034) and supported by a grant (CRI 12051–22) Chonnam National University Hospital Biomedical Research Institute.
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The authors have no conflicts of interest regarding this study publication.
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Shanhua, H., Huijing, H., Moon, M.J. et al. MR Detection of LPS-Induced Neutrophil Activation using Mannan-Coated Superparamagnetic Iron Oxide Nanoparticles. Mol Imaging Biol 15, 685–692 (2013). https://doi.org/10.1007/s11307-013-0643-x
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DOI: https://doi.org/10.1007/s11307-013-0643-x