Most proposed gene therapies rely on viruses to carry desirable genes into cells, and because the virus indiscriminately infects all types of tissues, the gene appears even where it is not wanted. (sciencemag.org)
Engineered gene drives, which have the potential to spread desirable genes throughout wild populations or to suppress harmful species, have received a lot of recent attention because of their potential to control organisms, such as mosquitoes that carry diseases such as Zika virus, malaria and dengue fever. (sciencedaily.com)
And then we could take advantage of the natural repair mechanism in the bacterial cells to throw a more desirable gene in its place [source: RadioLab]. (science.howstuffworks.com)