Exendin-4-Conjugated Manganese Magnetism-Engineered Iron Oxide Nanoparticles as a Potential Magnetic Resonance Imaging Contrast Agent for Tracking Transplanted β-Cells
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Synthesis of MnMEIO and MnMEIO-Ex4 NPs
2.3. Characterization of MnMEIO and MnMEIO-Ex4 NPs
2.4. Culture of MIN6 Cells
2.5. In Vitro Cytotoxicity Assay of MnMEIO and MnMEIO-Ex4 NPs
2.6. Insulin Secretion of MIN6 Cells
2.7. Cellular Uptake of MnMEIO and MnMEIO-Ex4 NPs
2.8. Transmission Electron Microscope (TEM) Measurements
2.9. In Vitro MR Scanning
2.10. Animals
2.11. Islet Isolation and Labeling
2.12. Islet Transplantation
2.13. In Vivo MR Scanning
2.14. Islet Graft Removal and Histological Studies
2.15. Statistical Analysis
3. Results
3.1. General Characterization of MnMEIO and MnMEIO-Ex4 NPs
3.2. Effects of MnMEIO and MnMEIO-Ex4 NPs on MIN6 Cell Viability and Insulin Secretion
3.3. Cellular Uptake of MnMEIO and MnMEIO-Ex4 NPs
3.4. In Vitro MR Images of MnMEIO and MnMEIO-Ex4 NPs and NPs-Labeled MIN6 Cells
3.5. In Vivo MR Images of MnMEIO-Ex4 NPs-Labeled Islets after Transplantation
3.6. Histological Studies of the MnMEIO-Ex4 NPs-Labeled Islet Graft
4. Discussion
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Materials | Hydrodynamic Size (nm) | Zeta Potential (mV) |
---|---|---|
MnMEIO NPs | 24.2 ± 2.3 | −5.1 ± 0.3 |
MnMEIO (MnMEIO-silane-NH2-mPEG) | 67.8 ± 1.3 | 33.3 ± 0.5 |
MnMEIO-Ex4 (MnMEIO-silane-NH2-mPEG-Ex4) | 70.2 ± 2.3 | 0.6 ± 0.1 |
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Juang, J.-H.; Shen, C.-R.; Wang, J.-J.; Wu, S.-T.; Lin, S.-H.; Chen, C.-Y.; Kao, C.-W.; Chen, C.-L.; Tsai, Z.-T.; Wang, Y.-M. Exendin-4-Conjugated Manganese Magnetism-Engineered Iron Oxide Nanoparticles as a Potential Magnetic Resonance Imaging Contrast Agent for Tracking Transplanted β-Cells. Nanomaterials 2021, 11, 3145. https://0-doi-org.brum.beds.ac.uk/10.3390/nano11113145
Juang J-H, Shen C-R, Wang J-J, Wu S-T, Lin S-H, Chen C-Y, Kao C-W, Chen C-L, Tsai Z-T, Wang Y-M. Exendin-4-Conjugated Manganese Magnetism-Engineered Iron Oxide Nanoparticles as a Potential Magnetic Resonance Imaging Contrast Agent for Tracking Transplanted β-Cells. Nanomaterials. 2021; 11(11):3145. https://0-doi-org.brum.beds.ac.uk/10.3390/nano11113145
Chicago/Turabian StyleJuang, Jyuhn-Huarng, Chia-Rui Shen, Jiun-Jie Wang, Shu-Ting Wu, Sung-Han Lin, Chen-Yi Chen, Chen-Wei Kao, Chen-Ling Chen, Zei-Tsan Tsai, and Yun-Ming Wang. 2021. "Exendin-4-Conjugated Manganese Magnetism-Engineered Iron Oxide Nanoparticles as a Potential Magnetic Resonance Imaging Contrast Agent for Tracking Transplanted β-Cells" Nanomaterials 11, no. 11: 3145. https://0-doi-org.brum.beds.ac.uk/10.3390/nano11113145