THE PROMISE OF GENE EDITING
Scientists at the Roslin Institute, near Edinburgh, said last week that they had edited the genomes of pigs, rendering them immune to a dangerous virus. The announcement is extraordinary precisely because it sounds almost routine these days.
Gene editing is already starting to save the lives of human cancer patients and generate healthier crops. Yet the battle to ensure it gains favor with public opinion must be urgently addressed. The usual suspects are already trying to blacken its name.
With the new gene-editing tool Crispr-Cas9, the Roslin scientists sliced out a short section from this gene in the fertilized egg of a pig. They then grew pigs from these eggs that turned out healthy and entirely normal in every way, including the functioning of the gene, but which denied the virus entry to the cell.
Cue an outbreak of horror about the risks of (cliché alert) designer babies. One newspaper has been blathering about “Frankenstein pigs.” But a similar technique is already being used to treat leukemia in children: are they Frankenstein kids?
What will be the public reaction to the release of gene-edited animals or plants? Bring it on and cure us, or how dare you try to poison us? We have been here before, twice.












