Scientists identify cell types that could transform Parkinson's disease treatments
Researchers have pinpointed specific brain cells that control the development of dopamine-producing neurons, opening a faster path to growing replacement cells for Parkinson's patients. The discovery of a new regulatory mechanism also improves how these neurons are derived in the lab, potentially accelerating cell therapies from research to clinic.
Originaltitel: Distinct radial glia subtypes regulate midbrain dopaminergic neuron development
<p>Understanding the development of midbrain dopaminergic (mesDA) neurons is essential for advancing cell replacement therapies for Parkinson's disease. In the developing ventral midbrain (VM), radial glia (Rgl) cells are the progenitors of mesDA neurons. However, distinct Rgl subtypes have recently been identified, and their individual roles are unclear. Here we analyze transcriptomic data from mouse and human VM Rgl to define their contributions to mesDA neuron development. We identify Rgl1 as the progenitor of the mesDA lineage, and reveal a Rgl1 transcriptional network coordinated by BMAL1, which we validate as a new regulator of mesDA neurogenesis. Moreover, we uncover Rgl3 as a key signaling subtype and show that factors expressed by Rgl3 promote the survival and yield of human stem cell-derived mesDA neurons. Our findings delineate distinct roles of Rgl subtypes, elucidate lineage relationships in the developing VM and uncover new factors that improve the derivation of clinically relevant human mesDA neurons.</p>