Two Progenitors Rewrite the Brain’s Origins
A Nature Neuroscience study shows brain development relies on two distinct progenitor cell populations: one forms the hindbrain and the other forms the forebrain and midbrain, challenging the long-held view of a single founder lineage. The researchers traced cell lineages in mouse embryos and guided human pluripotent stem cells to form the two early brain cell types, revealing conserved dual-progenitor patterns across species and offering a more efficient route to generate hindbrain neurons for disease research such as ALS. The findings spark debate about brain origins and highlight an ancient split in brain development with implications for understanding neurodevelopment.