Edited embryos. Why to say yes or no

embryo-mainThe exploit announced last week by Nature marks an advancement in CRISPR performance in human embryos big enough to say that yes, germ line editing will probably become a viable option sooner or later. It means that some genetic diseases (at least those caused by a single mutation) can be corrected not only in the treated individuals but also in their offspring. The idea of genetic diseases disappearing from the face of Earth is bound to remain a dream, as Eric Lander explained at the 2015 Washington Summit on Human Gene Editing. In short, with rare Mendelian diseases, the vast majority of situations can currently be addressed by in vitro fertilization and preimplantation genetic diagnosis, while complex diseases are, well, too complex to handle. Anyway, when you come to efficiency and accuracy, results achieved by Shoukhrat Mitalipov and colleagues are exciting: CRISPR science walks on robust and fast legs. As for the bioethics of the experiment, we should try not to get stuck with overused labels. Continue reading

Run, CRISPR, run

A few artists are already interested in using CRISPR to explore the border between biology and art, but scientists have so far been able to develop the artistic potential of genetics more elegantly and surprisingly. In this Nature paper, George Church’s group recalls the beginnings of cinematography by introducing old images of a galloping horse into a dividing bacterial population. Harvard researchers have chosen a historical sequence captured by British photographer Eadweard Muybridge in 1887, using a code based on nucleotide triplets to specify pixels tonalities. The exploit is technically astonishing, and it is not just a divertissement. It represents a proof of concept that one day perhaps we will be able to build cellular recorders, that can collect and store what is going on inside cells. But enthusiasm for futuristic research applications is joined here by an ancient sense of wonder. That galloping horse turns upside down proportion and hierarchy: it is the great in the small, the elegant in the primitive, the mammal in bacteria. Science has become magic. Art indeed.


Light bulb or bomb?


augias bomba atomicaCRISPR ’s debut in the cultural programming of the Italian television occurred at “Quante storie”, a 30 minutes book show aired by the public broadcasting company (Rai 3, 23 March 2017). It went with a genuine interest into understanding the science of genome editing and many questions from the classic repertoire concerning biotechnology, from worries about economic interests at play (but if we want drugs, the pharma industry must be there) to the risk of using the new technique for eugenics purposes (the long shadow of Nazism still makes us think blond children would be favored). Continue reading

Crazy 4 CRISPR

maxresdefaultStunning, revolutionary, momentous
: these are some of the adjectives sprinkled by leading international journals over CRISPR. In the last few years the new technique of genetic modification has been mentioned in hundreds of studies, not counting the articles published in the lay press. The keyword CRISPR (pronounced crisper) produces 6 million Google search results. Being the author of a book and a blog on the topic I can be dubbed as a genome-editing-enthusiast, but the title and logo I’ve chosen for my news and views diary are a way of kidding about the frenzy. The mug standing out on the homepage echoes the famous claim “Keep calm and carry on”. Keep calm and crispr on. When major scientific achievements arrive, or unexpected obstacles come between, because there are always some, or controversy erupts over this or that application of the technology, it won’t be the end of the world. Don’t panic and keep on crispring. Continue reading