Topic overview

Start with the big picture

The lesson surveys several therapeutic strategies. Gadolinium isotopes can capture neutrons and produce electrons that damage tumor-cell DNA locally, while beta-emitting agents such as lutetium-177 compounds, samarium-153, and holmium-166 microspheres are used in specific treatment contexts described in the source. Other approaches include brachytherapy seeds, lanthanoid-doped radiosensitizers, and upconversion nanoparticles that support photodynamic therapy or image-guided release. For targeted delivery, chelates can link therapeutic or imaging ions to peptides or antibodies, while polymers, dendrimers, and liposomes can serve as drug carriers. Luminescent europium and terbium also offer a way to follow carrier distribution. Together, these examples show how lanthanoid chemistry can combine targeting, treatment, imaging, and delivery.