Novel Isotopic Spectroscopy Imaging Tools for Advancing Targeted Alpha Cancer Therapies

Project Summary / Abstract

Targeted alpha therapy is an emerging technique for treating cancer showing great promise to deliver a precise and potent

cell-killing treatment to multiple cancer varieties. The design of these targeted radiopharmaceuticals combines a tumor-

selective carrier molecule bound to an alpha-particle-emitting radionuclide. The carrier molecule selectively binds to the

intended cancer cells, and the limited lethal spatial range of alpha particles emitted by the attached radionuclide yields a

targeted therapeutic effect by destruction of the cancer cells. Researchers are designing a variety of carrier molecules and

experimenting with radionuclide isotopes to get the best therapeutic effect. The novelty of the field means that tools are

still lacking to help researchers and other medical innovators to (1) characterize the spatial distribution of the therapeutic

resulting from carrier molecule design and (2) fully understand the fate of their chosen isotopes which chain-wise decay

into progeny isotopes which may have different affinities, toxicities, and effects. Our goal in this grant is to develop an innovative, quantitative radiation imaging tool that allows researchers and radiopharmaceutical developers to not only see the spatial distribution of targeted alpha therapy molecules at a near-cellular level, but to also see the emitting

molecules labeled by their emitting isotope, effecting a form of isotopic spectroscopy. This work builds upon our previous research in which we demonstrated a non-optimized but innovative algorithm for labeling parent and progeny isotopes. We now aim to refine this algorithm to achieve real-time isotopic spectroscopy, combine it with a highly optimized

hardware design for isotopic imaging, and bring the combined result to market. This device will be an extremely useful

tool for radiopharmaceutical experts, producing quantitative, quality-assured results to support their development of the

next great cancer treatments. We believe this project brings together our expertise in image science, real-time algorithm design, and product development to produce an invaluable tool for researchers working in this most-promising area of cancer therapy research.