BMI Progress Reports - ZOOM // Dr. La Manno's Lab - Gioele La Manno: A comprehensive map of nervous system development from gastrulation to birth

The mammalian brain develops through a complex interplay of spatial cues generated by diffusible morphogens, cell-cell interactions, and intrinsic genetic programs that result in the generation of likely more than a thousand distinct cell types. Therefore, a complete understanding of mammalian brain development requires systematic mapping of cell states covering the entire relevant spatiotemporal range. I will talk about a comprehensive single-cell transcriptome atlas of mouse brain development spanning from gastrulation to birth we erectly reported. We identified almost a thousand distinct cellular states, including the initial emergence of the neuroepithelium, a rich set of region-spe- cific secondary organizers and a complete developmental program for the functional elements of the brain and its enclosing membranes. I am going to show how we used the atlas to directly test the hypothesis that human glioblastoma reflects a return to a developmental cell state. In agreement, most aneuploid tumor cells matched embryonic rather than adult types, while karyotypically normal cells predominantly matched adult immune cell types.