Gut microbiota in pediatric patients with CNS tumors

Brain and central nervous system (CNS) tumors are the leading cause of cancer-related deaths in both adults and children, particularly affecting those aged 0–14 years. Efforts to develop targeted therapies have largely been unsuccessful, with limited improvement in survival rates. This underscores the urgent need for more effective treatments. Recent research highlights the importance of the gut microbiota and its collective genomes, known as the microbiome, in maintaining overall health. The microbiome helps prevent infections and regulates immune responses both locally and throughout the body. There is a strong connection between the gastrointestinal (GI) system and the CNS, as the CNS plays a crucial role in controlling the GI tract's function and balance. The relationship between the gut microbiota and the brain, referred to as the microbiota-gut-brain axis, is a complex interaction that may influence CNS cancer development and treatment outcomes. In this study, researchers examined the gut microbiota composition in a group of pediatric cancer patients, focusing on those with CNS tumors. Overall design: The aim of this study was to investigate whether the gut microbiota (GM) composition in pediatric patients with CNS tumors exhibits distinct characteristics. A total of 33 pediatric patients were included, 11 of whom were diagnosed with CNS tumors, while the remaining 22 had other types of tumors. Microbial DNA was extracted from stool samples, and 16S rRNA gene libraries were generated and sequenced. The resulting Operational Taxonomic Unit (OTU) tables were used to analyze the gut microbiota composition.