Institut du Cerveau – Paris Brain Institute’s Post

Balancer Chromosomes in Drosophila melanogaster: The Backbone of Fly Genetics How do researchers maintain lethal mutations without losing valuable fly lines? The answer lies in balancer chromosomes—specialized chromosomes designed to: ✅ Prevent genetic recombination through multiple inversions. ✅ Carry dominant visible markers for easy identification. ✅ Maintain lethal or sterile mutations in a stable heterozygous state. ✅ Simplify the generation and maintenance of CRISPR/Cas9 mutant lines. From developmental biology to neurodegenerative disease research, balancer chromosomes are indispensable tools for preserving genetic integrity and ensuring reliable experimental outcomes. Mastering balancer chromosomes is a fundamental skill for anyone working with Drosophila genetics and functional genomics. #Drosophila #Genetics #BalancerChromosomes #CRISPR #FunctionalGenomics #Neuroscience #Neurogenetics #FlyGenetics #Research #ProvictoireResearchHub #ScienceEducation #BiomedicalResearch

🧠 Just finished reading an outstanding Perspective in Nature Communications on the brain involvement in Duchenne muscular dystrophy (DMD). The article, led by Prof. Jos Hendriksen, Dr. Aurelie Goyenvalle, and Prof. Francesco Muntoni, highlights something that has long been underestimated: DMD is not only a muscle disease it is also a brain disorder. What I found particularly fascinating is how different dystrophin isoforms (Dp427, Dp140, and Dp71) contribute to distinct neurobehavioral phenotypes, including learning and memory deficits, anxiety, ASD-like behaviors, and executive dysfunction. Even more exciting is the evidence from mouse models showing that restoring brain dystrophin expression can partially rescue these cognitive and emotional impairments. This perspective beautifully connects molecular neuroscience, electrophysiology, genetics, and translational medicine, while opening new possibilities for brain-targeted therapies in DMD. A highly recommended read for anyone interested in neuroscience, neurodevelopment, or gene therapy. Congratulations to Prof. Jos Hendriksen, Dr. Aurélie Goyenvalle, Prof. Francesco Muntoni, and all the co-authors for this insightful work. #Neuroscience #DuchenneMuscularDystrophy #GeneTherapy #Neurobiology #NatureCommunications #TranslationalResearch

🧠 What controls how many connections neurons form in the brain? Our latest study reveals an unexpected role for ATP13A4 and astrocytes. We are excited to share our latest work, published in Nature Communications, showing that astrocytes—the cells that actively support and shape brain function—use ATP13A4 to regulate the availability and distribution of polyamines in the brain. Why does this matter? When ATP13A4 is lost, neurons form an excess of excitatory synapses—the connections that transmit activating signals through neural networks. Our findings uncover a previously unrecognized mechanism by which astrocytes help fine-tune how the brain is wired. We also identified rare loss-of-function variants in ATP13A4 in individuals with neurodevelopmental disorders. Together, these findings establish ATP13A4 as a new player in brain development and may help us understand how imbalances in neuronal connectivity arise and contribute to disease. A huge congratulations to first author and rising star Sarah van Veen on this outstanding achievement—a major milestone for our lab that firmly puts ATP13A4 on the neuroscience map. Many thanks also to the Cagla Eroglu lab, and all co-authors for making this work possible, and to ASAP and FWO for supporting this research. 🔗 https://lnkd.in/eW9BZDTS #ATP13A4 #NatureCommunications #Neuroscience #Astrocytes #Synapses #BrainDevelopment #NeurodevelopmentalDisorders #TeamScience

Cadmium exposure is a major concern in developmental neurotoxicity, but its effects on specific human neural cell populations are still being defined. In a recent study, scientists used human cortical organoids and single-cell RNA sequencing to map cadmium-induced changes across neurons, progenitor populations, radial glial cells, intermediate progenitors, and astrocytes. 📚 Learn more about the publication here → https://lnkd.in/g8WhXQbb Using Axion BioSystems’ Maestro MEA system, the team assessed whether these cellular and molecular changes translated into altered network function. After cadmium exposure, organoid-derived neuronal cultures showed reduced weighted mean firing rate, fewer bursts, and fewer network bursts, indicating suppressed overall network activity. By connecting cell-type-specific molecular changes with measurable network-level dysfunction, this study supports the use of human organoid models to better understand environmental toxicant risk during fetal brain development. #Neurotox #Organoids #Neuroscience

Exercise is well known for helping protect memory and cognitive function as we age. But ageing can also make exercise more difficult, often at the very time it matters most. A recent study offers some hope. Researchers used gene delivery to increase production of GPLD1, a memory-protective enzyme whose levels in the liver rise in response to exercise. Remarkably, in ageing mice, this produced similar cognitive benefits—even without physical activity. #BrainHealth #HealthyAgeing #Neuroscience #DementiaResearch #GPLD1

What if some people are naturally carrying a built-in defense against Alzheimer's without ever knowing it? Researchers found that the longevity-linked APOE2 gene appears to protect brain cells by reducing DNA damage and helping neurons recover from stress, a discovery that could open a new path toward treatments that mimic APOE2's defenses in people at higher genetic risk. #Alzheimers #APOE2 #BrainHealth #Neuroscience

What if a genetic brain disorder could be treated without repairing the genetic mutation itself? Researchers led by Anthony Lamantia, have discovered a promising new approach to treating certain genetic brain disorders — helping brain cells develop and connect through an alternate biological pathway. Published in Disease Models & Mechanisms, a journal published by The Company of Biologists, the findings suggest future therapies may be able to work around the effects of some genetic mutations rather than correcting them directly. LaMantia is a professor at the Fralin Biomedical Research Institute at VTC and the Department of Biological Sciences in the Virginia Tech College of Science. To read more about this study, find the link in the comments. #VTResearch #VirginiaTech #BrainHealth #GeneticDisorders #Neuroscience

🧠 World Brain Day Every breakthrough in neuroscience begins with a deeper understanding of biology. 🧬 As research into neurodegenerative diseases advances, RNA therapeutics are creating new opportunities to uncover disease mechanisms and accelerate therapeutic discovery. 🔬 From gene silencing to genome engineering, reliable RNA tools help turn ideas into meaningful research. 💡 Explore Synbio Technologies' RNA Toolkit to support your next neuroscience project. https://hubs.la/Q04qf6Vs0 #WorldBrainDay #Neuroscience #RNATherapeutics #Neurodegeneration #LifeScience

The biggest challenge in researching rare diseases lies not only in diagnosis and treatment but also in developing appropriate models to test potential drug molecules and interventions. Factors such as the young age of affected children, the rarity of the condition, and limited funding all contribute to these challenges. However, we are actively working to overcome these barriers. We have brought children from various parts of the world to our platform and created neuronal models to accelerate the pace of research. Contact us to learn more about our platform for mitochondrial rare diseases. https://hubs.ly/Q04r6cn60 #MitochondrialDisease #Neuroscience #StemCells #POLG #DrugDiscovery #POLG #NeuroResearch Stemnovate Limited

The biggest challenge in researching rare diseases lies not only in diagnosis and treatment but also in developing appropriate models to test potential drug molecules and interventions. Factors such as the young age of affected children, the rarity of the condition, and limited funding all contribute to these challenges. However, we are actively working to overcome these barriers. We have brought children from various parts of the world to our platform and created neuronal models to accelerate the pace of research. Contact us to learn more about our platform for mitochondrial rare diseases. https://hubs.la/Q04qNTD00 #MitochondrialDisease #Neuroscience #StemCells #POLG #DrugDiscovery #POLG #NeuroResearch Stemnovate Limited