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A cancer vaccine, or oncovaccine, is a vaccine that either treats existing cancer or prevents development of cancer. [1] Vaccines that treat existing cancer are known as therapeutic cancer vaccines or tumor antigen vaccines. Some of the vaccines are "autologous", being prepared from samples taken from the patient, and are specific to that patient.
Vaccine therapy is a type of treatment that uses a substance or group of substances to stimulate the immune system to destroy a tumor or infectious microorganisms such as bacteria or viruses. Cancer vaccines
Personalized mRNA cancer vaccine therapy is a therapy that uses a personalized cancer vaccine based on mRNA vaccine technology to target existing tumors in patients. As of 2024, number of mRNA cancer vaccines are in clinical trials, of which many are personalized therapies based on engineering mRNA-mediated immune response that targets the patient's particular strain of cancer cells.
Cancer is the major cause of deaths in the recent era. Cancer types and stages have enhanced with time and so has efforts to treat cancer. Currently, there are about 369 cancer vaccine studies ongoing all around the world. [11] There are three cancer therapeutic vaccines which are approved by USA Food and Drug Administration, as following;
Cancer immunotherapy (immuno-oncotherapy) is the stimulation of the immune system to treat cancer, improving the immune system's natural ability to fight the disease. [1] It is an application of the fundamental research of cancer immunology (immuno-oncology) and a growing subspecialty of oncology.
Tumor antigens have been a main target in specific active immunotherapy by way of vaccination. Tumor antigens are antigens produced by tumor cells and can be common among patients with the same cancer-type, or unique to a particular patient. Their specificity to malignant tumor cells makes tumor antigens ideal candidates for vaccination. [2]
Because the antibody produced using the "anti-idiotypic" process closely resembles the original epitope of the antigen, these antibodies can be used to induce immune responses from cellular to antibody-antigen for a given antigen, e. g., TAA, when administered as a vaccine to a human. They are mainly used for high risk cancer patients.
The diagram above represents the process of chimeric antigen receptor T-cell therapy (CAR), this is a method of immunotherapy, which is a growing practice in the treatment of cancer. The final result should be a production of equipped T-cells that can recognize and fight the infected cancer cells in the body.