Leukodystrophies
https://onlinelibrary.wiley.com/doi/10.1111/jnc.70170
The brain and spinal cord have a limited ability to repair themselves, especially with age. For people with neurodegenerative conditions like leukodystrophies, Alzheimer’s, or multiple sclerosis, damage to brain cells or myelin is hard to reverse and current treatments mostly slow or alleviate symptoms but rarely restore function. This article reviews current advancements and novel ways to repair the damaged brain. Scientists have been studying special cells called neural stem cells (NSCs) that can develop into different types of brain cells and release healing substances. However, transplanting NSCs directly faces challenges, including immune rejection and safety concerns. Recent research showed that most of the benefits of NSC treatment come from tiny particles they release, called extracellular vesicles (EVs). These vesicles act like delivery packages, carrying proteins and genetic material that can influence other cells. Studies in animals suggest that NSC-derived EVs can reduce harmful brain inflammation, support neuronal survival and aid myelin repair. One of the advantages of EVs are their small size, which allows them to easily enter the brain and are less likely to cause immune problems. Still early, this approach offers hope for future therapies that may restore brain function in leukodystrophies and other neurodegenerative conditions. However, producing such EVs is challenging, and more experiments are needed to assess their safety and efficacy.