news 2025

Astrocytes are found throughout the brain. Each astrocyte is in contact with several neurons and more than 100'000 synapses. A new study shows that, at the microscopic level, dozens of synapses from distinct neural circuits gather around a single specialized astrocyte structure called a leaflet, which is capable of detecting and integrating the activities of multiple synapses.

Molecules passing through the colon epithelium via specialized pathways (goblet cells). In red: the molecules transported (antigens); in blue: the epithelium. Institut Pasteur/Microbiome-Host Interactions/Clara Delaroque and Benoit Chassaing A study conducted in mice by scientists from the Institut Pasteur and Inserm reveals that maternal consumption of dietary emulsifiers can have a negative impact on the gut microbiota of their offspring.

Following a scientific publication to which several members of the High Field NMR Centre in Lyon contributed, namely Andrew J. Pell, lecturer-researcher (CNRS/ENS de Lyon/Claude Bernard Univer

A new class of molecules capable of killing the cancer cells that are refractory to standard treatments and responsible for recurrence has just been developed by scientists at Institut Curie, the CNRS, and Inserm. This crucial advance in the fight against metastatic cancer is based on identifying the cellular site for ferroptosis initiation, a natural process, catalysed by iron, that sparks the oxidative degradation of cell membranes.

The longest organic molecules identified to date on Mars have recently been detected by scientists from the CNRS 1 , together with their colleagues from France, the United States of America, Mexico and Spain. These long carbon chains, containing up to 12 consecutive carbon atoms, could exhibit features similar to the fatty acids produced on Earth by biological activity 2 .