Purpose: This work aims to develop, validate and optimize the radiolabeling of Starch-Based Microparticles (SBMP) by 188Re and 68Ga in the form of ready-to-use radiolabeling kits, the ultimate goal being to obtain a unique theranostic vector for the treatment of Hepatocellular Carcinoma.
Methods: Optimal labeling conditions and composition of freeze-dried kits were defined by monitoring the radiochemical purity while varying several parameters. In vitro stability studies were carried out, as well as an in vivo biodistribution as a preliminary approach with the intra-arterial injection of 68Ga radiolabeled SBMP into the hepatic artery of DENA-induced rats followed by PET/CT imaging.
Results: Kits were optimized for 188Re and 68Ga with high and stable radiochemical purity (>95% and >98% respectively). The in vivo preliminary study was successful with more than 95% of activity found in the liver and mostly in the tumorous part.
Conclusion: SBMP are a promising theranostic agent for the Selective Internal Radiation Therapy of Hepatocellular carcinoma.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5065223 | PMC |
| http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0164626 | PLOS |
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