Owing to their high radioactivity, actinide and fission products, which would leak and migrate in the environment under accidental conditions, is possible to enter the human body through inhalation, ingestion, and etc, resulting in high internal radiation dose that could lead ultimately to cancers or even death. Thus, for safety concerns, it is critical to search for specific sequestration medicine of low toxicity and high efficiency that could accelerate the removal of radionuclides from the body to reduce the internal radiation dose.