Neurobiology of Down syndrome
Down syndrome is the most common chromosomal cause of intellectual disability. During fetal life, the brains of people with Down syndrome show a marked reduction in neural precursor cell proliferation, differentiation, and migration. However, we have a limited understanding of how the abnormal genomic landscape in Down syndrome disrupts specific neurodevelopmental processes in utero, leading to cortical dysmaturation, hypocellularity, and white matter abnormalities. To study these molecular underpinnings, we use highly multiplexed RNA imaging, as well as human brain tissue and induced pluripotent stem cells.