what are the three functions of interferons?
1.They induce uninfected cells to produce enzymes capable of degrading mRNA. These enzymes remain inactive until the uninfected cell becomes infected with a virus. At this point, the enzymes are activated and begin to degrade both viral and cellular mRNA. This not only blocks viral protein synthesis, but also eventually kills the infected cell.
2. They activate cells of the immune system and increase their ability to combat infection.
3. Increase expression of MHC class I, resulting in increased activation of CD8 T cells