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Radiosynthesis, Quality Control, and Small Animal Positron Emission Tomography Imaging of 68Ga-Labelled Nano Molecules
Published on: October 4, 2024
Radiolabeled nanogels for nuclear molecular imaging
Smriti Singh1, Bahar Bingöl, Agnieszka Morgenroth
1Interactive Materials Research-DWI an der RWTH Aachen e.V. and Institute Technical and Macromolecular Chemistry, RWTH Aachen University, Forckenbeckstr. 50, 52074 Aachen, Germany.
Macromolecular Rapid Communications
|February 21, 2013
Summary
Stable gallium-68 labeled nanogels were synthesized efficiently. These radiolabeled nanogels show increased uptake by macrophages, enabling in vivo imaging studies.
Area of Science:
- Radiochemistry
- Materials Science
- Nanotechnology
Background:
- Nanogels offer potential for biomedical applications.
- Radiometal labeling is crucial for molecular imaging.
- Gallium-68 (68Ga) is a positron-emitting radionuclide widely used in Positron Emission Tomography (PET).
Purpose of the Study:
- To develop an efficient synthesis for stable 68Ga-labeled nanogels.
- To characterize the fundamental properties of these nanogels.
- To evaluate their potential for in vivo nuclear molecular imaging.
Main Methods:
- Self-assembly of amphiphilic statistical prepolymers functionalized with chelating groups.
- Chelation of the radionuclide 68Ga in aqueous solution at room temperature.
- Characterization of nanogel size and shape using dynamic light scattering and electron microscopy.
- Phagocytosis assay using activated macrophages.
Main Results:
- Stable nanogels with a spherical shape (290 ± 50 nm diameter) were successfully synthesized.
- High radiochemical yields of 68Ga-labeled nanogels were achieved under mild conditions.
- Activated macrophages demonstrated significantly increased internalization of the 68Ga-nanogels.
- The developed nanogels are suitable for in vivo investigations.
Conclusions:
- An efficient and straightforward method for producing stable 68Ga-labeled nanogels has been established.
- These nanogels possess favorable characteristics for nuclear molecular imaging applications.
- The enhanced uptake by macrophages suggests potential for targeted delivery and imaging of inflammatory processes.
- Further in vivo studies are warranted to explore nanogel behavior and clearance pathways.
