A proteosome vaccine is a type of immunotherapy that utilizes a complex of proteins called proteosomes. These vaccines are often used to target cancer cells or to stimulate the immune system to fight against infections. Synonyms for this type of vaccine include proteasome-based vaccines, proteasomal vaccines, and proteasome-targeting vaccines. Similar types of vaccines may also incorporate other protein complexes, such as ribosomes or nanoparticles, which can be used to create a variety of different types of immune responses. Despite the varied terminology, all of these types of vaccines share the common goal of training the immune system to target specific cells or organisms.