Bridging molecular mechanisms and therapeutic innovations: The role of brain organoids in neurodevelopmental disorder research

This article examines the role of brain organoids in understanding neurodevelopmental disorders (NDDs), including autism spectrum disorder, intellectual disabilities, and schizophrenia, which arise from disruptions in the complex processes of brain development. The transformative potential of human pluripotent stem cell-derived brain organoids as models for investigating the molecular mechanisms underlying NDDs and their implications for therapeutic innovation is explored. By simulating critical stages of human brain development – such as neurulation, neurogenesis, and gliogenesis – organoids provide a physiologically relevant platform to investigate cellular diversity, synaptic connectivity, and neuronal circuit formation. Advanced methodologies, including single-cell RNA sequencing and chromatin accessibility profiling, are utilized to dissect lineage-specific gene expression patterns and regulatory mechanisms within organoids. In addition, metabolic profiling and functional assessments comprehensively evaluate neuronal maturation, synaptic plasticity, and cellular interactions, addressing the limitations of traditional two-dimensional cultures. This article also examines the influence of environmental factors, such as viral infections, by utilizing organoid models to simulate host-pathogen interactions and assess their impact on neural progenitor function and cortical development. The integration of machine learning and innovative culture systems, including microfluidic and vascularized models, enhances the physiological relevance and reproducibility of brain organoid research. This review highlights the potential use of organoids in elucidating the molecular pathology of NDDs and as platforms for drug discovery and personalized therapeutic screening, ultimately bridging molecular insights with therapeutic applications and underscoring the vital role of brain organoids in advancing the understanding of NDDs and facilitating the development of targeted interventions.