¹⁸⁸Re(V) Nitrido Radiopharmaceuticals for Radionuclide Therapy

Area of Science:

• Nuclear medicine
• Radiopharmaceutical chemistry

Background:

• Rhenium-188 (¹⁸⁸Re) possesses favorable nuclear properties for therapeutic applications.
• Availability of ¹⁸⁸Re from tungsten-188 (¹⁸⁸W)/¹⁸⁸Re generator systems.

Purpose of the Study:

• To describe new methods for preparing high-yield, stable ¹⁸⁸Re radiopharmaceuticals.
• To explore the synthesis of ¹⁸⁸Re theranostics using a nitride rhenium core.
• To establish parallels with technetium-99m (⁹⁹mTc) radiopharmaceutical preparation.

Main Methods:

• Development of synthetic procedures for ¹⁸⁸Re radiopharmaceuticals featuring a nitride rhenium core.
• Adaptation of established ⁹⁹mTc labeling strategies for ¹⁸⁸Re.
• Characterization of the chemical properties of nitride rhenium fragments.

Main Results:

• Successful preparation of stable ¹⁸⁸Re radiopharmaceuticals in high yields under physiological conditions.
• Demonstrated parallelism between ⁹⁹mTc and ¹⁸⁸Re radiopharmaceutical synthesis.
• Identified minor modifications needed for adapting ⁹⁹mTc labeling protocols to ¹⁸⁸Re.

Conclusions:

• New chemical strategies facilitate the efficient production of ¹⁸⁸Re radiopharmaceuticals.
• These methods offer an attractive prospect for therapeutic applications of ¹⁸⁸Re.
• The established synthetic routes enhance the potential of ¹⁸⁸Re in theranostics.