I heard a new term today in a discussion with a genetic engineer at my lunch table. “Cisgenic” is the introduction of a trait from the same species into its DNA. They use a different term because one of the criticisms of genetic engineering is that traits are introduced from organisms in a different kingdom, which makes some people uncomfortable. This new distinction, some industry players hope, will reduce public opposition to genetic engineering. Too bad cisgenic organisms still carry almost all the same risks. As Jefferey Smith pointed out, there is a ripple effect in the DNA of the host organism when a trait is inserted which effects the entire genome. Unrelated genes can mutate, make extra copies of themselves, change their levels of expression, and/or randomly turn on or off.
When I posed this to the man I was speaking to, he said that it is simply not economically feasable to see what other impact the insertion might have on the genome. In fact, for good measure, they will put in multiple copies of the trait they want to see expressed, because they have no idea how to ensure it works. Essentially, we just don’t know enough about genetic engineering to be playing around with gene insertions at this point.
When I posed that point, he agreed, but said that there is a cost-benefit analysis as to whether it is worth it because we can grow fuel instead of sucking it out of the ground. Too bad the people who accept the risk are not the people who receive the benefit.