From health clinics to farms, CRISPR has a bright future, but diligence required to limit ‘off-target’ effects

Print Friendly, PDF & Email
nanotubes x
Credit: UC Berkeley graphic by Ella Marushchenko

The ability to make targeted, intentional changes in chromosomal DNA using the tools of genome editing has been a tremendous boon to the practice of genetics, particularly with the advent of the easy-to-operate CRISPR platform. The technology is also making its way to the clinic and the farmer’s field with applications that promise to have significant benefits for humanity.

Genome editing is being applied to crop plants and livestock, with the goal of establishing more secure and nutritious food sources. These applications benefit from the ability to expand favorable traits rapidly from a small number of founders via seed or semen.

Individuals from the first few generations can be characterized …. to identify off-target mutations and by careful phenotyping to reveal any adverse effects on either the health of the organism or the quality of the food product.

Incidental mutations that create such problems would not be propagated, and those that have no adverse effects can certainly be tolerated. Many existing strains of crop plants were derived by breeding selection after broad, random mutagenesis with radiation or chemicals; and those strains retain a substantial load of background mutations that are never characterized or acknowledged

In every application of genome editing, a thorough risk:benefit analysis should be applied. Both sides of that comparison will be particular to the situation at hand and, therefore, difficult to generalize. With the tools currently available for analysis and avoidance of unwanted genomic cleavage, most applications will not be limited by off-target mutagenesis, as long as users are diligent in their approach.

Read full, original article: Collateral damage: benchmarking off-target effects in genome editing

Outbreak Daily Digest
Biotech Facts & Fallacies
GLP Podcasts
Infographic: Trending green and going great — Every state in the US seeing decreased cases of COVID

Infographic: Trending green and going great — Every state in the US seeing decreased cases of COVID

The U.S. averaged fewer than 40,000 new cases per day over the past week. That’s a 21% improvement over the ...
a bee covered in pollen x

Are GMOs and pesticides threatening bees?

First introduced in 1995, neonicotinoids ...
News on human & agricultural genetics and biotechnology delivered to your inbox.
glp menu logo outlined

Newsletter Subscription

* indicates required
Email Lists