Synaptic connectome of a neurosecretory network in the Drosophila brain.

Synaptic connectome analysis reveals diuretic hormone 44-expressing NSCs as key coordinators of physiology and behavior in the adult Drosophila brain.

• Why it matters: Understanding how hormonal signaling is regulated in the brain is essential for deciphering the neural basis of behavior and physiological processes, yet the detailed synaptic architecture remains largely unknown.
• What they did: The study mapped the synaptic connections of neurosecretory cells (NSCs) in the Drosophila brain, identifying input pathways from sensory modalities, influence from enteric and descending neurons, and output pathways mainly via corazonin NSCs, using a linear dynamical systems approach and single-cell transcriptomics.
• The result: Findings suggest that NSCs integrate diverse sensory and neural inputs to regulate behaviors such as egg-laying, providing a comprehensive framework to understand hormonal networks controlling physiology and behavior in insects.