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To carry out their activities, Research Teams of the Frédéric Joliot Institute for Life Sciences have developed high-profile technological platforms in many areas : biomedical imaging, structural biology, metabolomics, High-Throughput screening, level 3 microbiological safety laboratory...
All the news of the Institute of life sciences Frédéric Joliot
A team from SIMoS, in collaboration with a team from I2BC, has validated a quantitative bacterial two-hybrid system that they developed for the high-throughput analysis of protein–protein interactions (PPIs). This approach enables the quantitative analysis of PPIs based on data suitable for training AI models.
Researchers from NeuroSpin have published the first functional magnetic resonance imaging (fMRI) scans acquired using NeuroSpin’s ISEULT 11.7 Tesla MRI scanner, while exploring the challenges of this ultra-high-field MRI modality.
Researchers from I2BC, the University of Leicester, IPBS, and ISS have resolved the structure and identified specific contacts mediating interactions within a complex consisting of the Ku70/Ku80 heterodimer, DNA, and the exonuclease domain of the WRN protein, whose dysfunction is responsible for a rare disease associated with a high risk of cancer.
A study, led by I2BC teams, combining enzymology and structural biology, and using RNA microhelices that mimic the acceptor arm of tRNAs, reveals that the two substrates of a cyclodipeptide synthase (CDPS) share a common interaction mode within the enzyme’s catalytic site.
A team from I2BC used ultrafast stimulated Raman spectroscopy under resonance conditions enabling the selective observation of vibrational contributions from the various excited states following photon absorption and reveal the vibrational signatures of three optically dark excited states in carotenoids.
Using high-resolution electroencephalography, a team from NeuroSpin has identified a significant link between the power of beta brain waves and hyper- and hypo-sensory particularities in autistic individuals aged between 5 and 17.
An I2BC team has studied, using both in vitro and in silico approaches, the dynamics of phosphatidylserine transport between the endoplasmic reticulum and the plasma membrane in the yeast S. cerevisiae. Their study reveals that the protein Ist2 exhibits lipid scramblase activity and identifies a functional partnership between Ist2 and the lipid transfer protein Osh6.
Researchers from Avignon University and SPI have investigated the proteome of the bacterium Bacillus cereus grown under anoxic conditions in order to gain a better understanding of the role of the TSPO protein in the bacterium’s physiology. They demonstrate that TSPO is a key regulator of porphyrin and iron metabolism, helping to maintain the environmental resilience of B. cereus.
Researchers from BioMaps, NeuroSpin and the Paris Psychiatry & Neurosciences University Hospital Group have unveiled the results of a two-year longitudinal study highlighting differences in white matter bundle alterations between patients with Alzheimer’s disease and those with LATE amnesia.
Researchers from DMTS designed bifunctional PROTAC chemical probes to identify the molecular target(s) of Retro-2 compounds, broad-spectrum inhibitors of intracellular pathogens. Although this approach did not identify new Retro-2 targets, it revealed a molecular glue effect involving the protein GSPT1.
A team from the SPI (DMTS) investigated the effects of hypoxia on the interface between the choroid plexus and cerebrospinal fluid using organoids derived from human pluripotent stem cells. The aim was to investigate how cerebral hypoxia at birth, which causes hypoxic-ischaemic encephalopathy, disrupts this cerebral barrier, which has not yet been extensively studied.
Researchers from NeuroSpin demonstrate that cortical folding, analyzed using deep learning, holds promising potential for predicting psychiatric disorders. They highlight the value of pre-training to build foundation models on large cohorts and the benefits of a regional approach.
Researchers from DMTS have demonstrated that the quality of proteomic analyses can be significantly improved by optimizing the protein digestion step of a sample. Within the framework of a rapid and automatable technique (SP3), selecting the appropriate magnetic beads and adjusting the protein-to-bead ratio proves to be a winning strategy.
Peptides and proteins adsorb onto plastic nanoparticles, forming a corona. Researchers from I2BC and CEA-Iramis, using molecular modeling, reveal distinct adsorption behaviors depending on their amino acid sequences. They thus establish a mechanical basis for predicting peptide-plastic interactions, a crucial element for assessing the risks these interactions pose to health and ecosystems.
The CEA is revealing a series of in vivo human brain images acquired with the Iseult MRI machine and its unmatched 11.7 teslas magnetic field strength. This success is the fruit of more than 20 years of R&D as part of the Iseult project, with one pillar goal being to design and build the world’s most powerful MRI machine. Its ambition is to study healthy and diseased human brains with an unprecedented resolution, allowing us to discover new details relating to the brain’s anatomy, connections, and activity.
In an article in the New York Times, Stanislas Dehaene (NeuroSpin director) and Mathias Sablé-Meyer (PhD student) discuss recent results obtained in collaboration with the Collège de France, the CNRS and the University of Paris 8 that show that humans have a universal capacity to understand abstract geometric concepts.
September 2021, the 11.7 Tesla MRI of the Iseult project, the most powerful in the world for human imaging, has just unveiled its first images.
CEA is a French government-funded technological research organisation in four main areas: low-carbon energies, defense and security, information technologies and health technologies. A prominent player in the European Research Area, it is involved in setting up collaborative projects with many partners around the world.