Evo-devo Mechanisms Underlying Uniqueness of Human Brain
Focused on "What makes us human," we systematically profile human-specific characteristics and dissect their molecular and cellular mechanisms through cross-species and cross-development comparisons. Previously, we identified multi-faceted human-specific features, including distinct cell types, dopamine-secreting interneurons, and the expression regulation of language-related genes, and discovered the GALP signaling pathway as a key driver of prefrontal cortex expansion (Science 2022, 2023). Current research aims to address remaining unknowns, such as the regulatory networks driving protracted brain maturation, how this prolonged window impacts plasticity and functional networks, and the precise control of the assembly of human-specific neural circuits. We are combining comparative genomics with spatiotemporal multimodal profiling to understand how genomic variants and regulatory remodeling synergistically influence neuronal maturation and circuit assembly, tracing the evolutionary origins of higher-order cognitive functions from molecules to circuits.