The development of mRNA-based vaccines has represented a major advance in the field of vaccine development. Rather than using weakened or inactivated viruses to stimulate an immune response to generate protective antibodies, mRNA-based vaccines provide a potentially safer and more effective approach. mRNA vaccines work by introducing a small piece of mRNA into the body, which encodes instructions to produce a specific viral protein for the cell to manufacture. This protein then triggers an immune response, leading to the production of antibodies that can protect against specific diseases. Combined Therapeutics has designed a modified mRNA-based vaccine platform that allows for the inhibition of protein expression in specific tissues, enabling targeted vaccine treatment and preventing off-target side effects. It’s designed to be adaptable and efficient, which makes possible rapid production of vaccines for a wide range of diseases and disease variants. We spoke to Thomas VanCott, chief scientific officer of Combined Therapeutics, about the company’s mRNA platform for vaccines, the advantages it provides, and its potential to use the same approach to train the immune system on specific mutations in a tumor.