While using mRNA as medicine is new, mRNA has been inside you for your entire life. The cells in your body create mRNAs that serve as instructions to make specific proteins you need to function. Researchers can create new mRNAs to correct those instructions when they aren’t working.
I am a molecular biologist who studies how cells control their mRNAs to make the proteins they need, a basic question of how life works at the cellular level. While most scientists studying mRNAs are not creating new drugs, this fundamental understanding of how mRNA works laid the foundation for other scientists to create effective mRNA medicines like COVID-19 vaccines.
By tweaking these instructions, scientists can create powerful new medicines to repair a variety of problems in your cells.