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Targeted alpha-particle therapy (or TAT) is an in-development method of targeted radionuclide therapy of various cancers. It employs radioactive substances which undergo alpha decay to treat diseased tissue at close proximity. [1] It has the potential to provide highly targeted treatment, especially to microscopic tumour cells.
Alpha radiation is a nuclear phenomenon in which a heavy radionuclide emits an energetic alpha particle (consisting of two protons and two neutrons) and transmutes to a different radionuclide. The emitted alpha particle has a range in tissue of only 40-90 microns, which minimizes collateral damage when used for treatment purposes.
Radioimmunotherapy (RIT) uses an antibody labeled with a radionuclide to deliver cytotoxic radiation to a target cell. [1] It is a form of unsealed source radiotherapy.In cancer therapy, an antibody with specificity for a tumor-associated antigen is used to deliver a lethal dose of radiation to the tumor cells.
For instance, Memorial Sloan Kettering Cancer Center has been leading the development of [225Ac]Ac-Macropa-PEG-Isatuximab, a CD38-targeted alpha therapy for multiple myeloma. In preclinical investigations, this therapy exhibited a notable capacity to significantly diminish tumor burden and postpone tumor progression, with optimal results ...
The resulting decay reaction yields high-energy alpha particles that kill the cancer cells that have taken up enough 10 B. All clinical experience with NCT to date is with boron-10; hence this method is known as boron neutron capture therapy (BNCT). [1]
[33] [34] Although it is uncertain whether improved outcomes with exercise are correlated or causative, the benefit-risk ratio of including exercise as part of cancer treatment is large, [35] as exercise has further benefits (e.g. cardiovascular, mental health) without major risks, although there is a small risk of overuse injury if added too ...
Patients and their diseases are profiled in order to identify the most effective treatment for their specific case. Targeted therapy or molecularly targeted therapy is one of the major modalities of medical treatment (pharmacotherapy) for cancer, [1] others being hormonal therapy and cytotoxic chemotherapy.
Since the range of an alpha particle is typically about the diameter of a single eukaryotic cell, the precise location of the emitting atom in the tissue cells becomes significant. For this reason, it has been suggested that the health impact of contamination by alpha emitters might have been substantially underestimated. [4]