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Core-shell Fe3O4@NaLuF4:Yb,Er/Tm nanostructure for MRI, CT and upconversion luminescence tri-modality imaging
Xingjun Zhu1, Jing Zhou, Min Chen
1Department of Chemistry & Institute of Biomedicine Science & State Key Laboratory of Molecular Engineering of Polymers, Fudan University, 220 Handan Road, Shanghai 200433, PR China.
Biomaterials
|March 27, 2012
Summary
A novel multifunctional nanostructure, MUCNP, was developed for advanced medical imaging. This core-shell material shows promise for multimodal imaging, including MRI, CT, and upconversion luminescence, with excellent safety profiles.
Area of Science:
- Nanotechnology
- Materials Science
- Biomedical Imaging
Background:
- Development of multifunctional nanostructures is crucial for advanced diagnostic tools.
- Multimodal imaging probes offer enhanced sensitivity and specificity.
Purpose of the Study:
- To synthesize and characterize a novel core-shell nanostructure (MUCNP) for multimodal imaging.
- To evaluate the imaging capabilities and biocompatibility of MUCNP.
Main Methods:
- Step-wise synthesis of Fe(3)O(4)@NaLuF(4):Yb,Er/Tm nanostructures.
- Characterization using TEM, XRD, EDX, and XPS.
- In vitro and in vivo multimodal imaging studies (MR, CT, UCL) in tumor-bearing mice.
Main Results:
- Successful fabrication of MUCNP confirmed by multiple techniques.
- MUCNP exhibits superparamagnetism (15 emu g(-1)) and T(2)-enhanced MR effect (r(2) = 21.63 s(-1) mM(-1)).
- Excellent X-ray attenuation and 980 nm excited upconversion luminescence (UCL) observed.
- In vivo multimodal imaging and non-cytotoxic in vitro results.
Conclusions:
- Developed MUCNP is a multifunctional probe for tri-modality imaging (MR, CT, UCL).
- The nanostructure demonstrates potential for enhanced tumor detection and diagnosis.
- MUCNP shows excellent biocompatibility, paving the way for clinical applications.
