Flux continu

Experts warn that mirror bacteria, constructed from mirror images of molecules found in nature, could put humans, animals and plants at risk of lethal infections

This report describes the technical feasibility of creating mirror bacteria and the potentially serious and wide-ranging risks that they could pose to humans, other animals, plants, and the environment. It accompanies the Science Policy Forum article titled “Confronting risks of mirror life”, published December 12, 2024.

All known life is homochiral. DNA and RNA are made from “right-handed” nucleotides, and proteins are made from “left-handed” amino acids. Driven by curiosity and plausible applications, some researchers had begun work toward creating lifeforms composed entirely of mirror-image biological molecules. Such mirror organisms would constitute a radical departure from known life, and their creation warrants careful consideration. The capability to create mirror life is likely at least a decade away and would require large investments and major technical advances; we thus have an opportunity to consider and preempt risks before they are realized. Here, we draw on an in-depth analysis of current technical barriers, how they might be eroded by technological progress, and what we deem to be unprecedented and largely overlooked risks (1). We call for broader discussion among the global research community, policy-makers, research funders, industry, civil society, and the public to chart an appropriate path forward.

Près de 40 scientifiques de renom ont cosigné un article, jeudi, dans la revue Science pour mettre en garde contre la création d’une “bactérie miroir”. Ils estiment que les “nouvelles formes de vie miroir” qui n’existent pas encore mais pourraient arriver d’ici une décennie, posent un risque important pour l’humanité. De quoi s’agit-il ?

"Sans clauses miroirs contraignantes, nous ne pourrons accepter, nous ne pourrons pas être favorables à l'accord avec le Mercosur". C'est en ces termes que le ministre fédéral de l'Agriculture David Clarinval a décrit, jeudi en séance plénière de la Chambre, la position du gouvernement fédéral au sujet de l'accord UE-Mercosur.

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