RNA-based vaccines – types, strategies of delivery and overview of RNA vaccines

  The discovery of mRNA by Sydney Brenner dates back to 1961, but the in vivo expression of mRNA was successful only in 1990, which initiated the development of vaccines based on this molecule. During Sars-CoV-2 pandemy the interest in the use of nucleic acids in the production of drugs and vaccines has increased significantly. The success of mRNA vaccines against Sars-CoV-2 has particularly empowered the pharmaceutical industry to create newer and newer generation products based on RNA modification that could help not only in Covid-2019, but also in the prevention and treatment of other infectious diseases. RNA has a very high potential - it can be used in highly personalized therapies, furthermore the production of mRNA is cheaper, faster than the current therapeutics and the process of mRNA making is more flexible due to the great ease of producing mRNA in the process of transcription. Modifying of the structure of ribonucleic acid and the methods of its delivery leads to the creation of newer and newer vaccines. In this review, we present the potential of RNA molecule in producing vaccines, types of RNA vaccines, strategies of RNA delivery and review of existing RNA-based vaccines