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Evolutionarily conserved transcriptional regulators control monoaminergic neuron development

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Item Type:Preprint
Title:Evolutionarily conserved transcriptional regulators control monoaminergic neuron development
Creators Name:Lewis, Clifton, Goulty, Matthew, Wroblewska, Aniela, Croxall, Nicola, Onion, David, Robinson, Sue, Zinzen, Robert P., Solana, Jordi, Kyriacou, Charalambos P., Rosato, Ezio and Feuda, Roberto
Abstract:To what extent conserved developmental programs specify homologous cell types is a central question in biology. Here, we address this by focusing on reconstructing monoaminergic neuron development in Drosophila melanogaster embryo using time-resolved single-cell genomics, spatial transcript mapping with hybridisation chain reaction, and targeted metabolomics. We uncover a regulatory landscape in which specific transcription factors are activated before biosynthetic enzymes, establishing a prospective temporal architecture for monoaminergic fate specification. Comparative analyses of developmental single-cell atlases from zebrafish and sea urchin indicate that components of this machinery are conserved across ~550 million years of bilaterian evolution with orthologous transcription factors showing similar temporal dynamics. Together, these findings point to a putatively conserved regulatory core that interfaces with other context-dependent transcription factors; this interplay accommodates monoaminergic multifunction and subtype diversity across distinct neuroanatomies.
Source:bioRxiv
Publisher:Cold Spring Harbor Laboratory Press
Article Number:2025.10.29.685200v2
Date:31 October 2025
Official Publication:https://doi.org/10.1101/2025.10.29.685200
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