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Histamine-tuned Subicular Circuit Mediates Alert-driven Accelerated Locomotion in Mice

Overview
Journal Nat Commun
Specialty Biology
Date 2024 Nov 14
PMID 39543166
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Abstract

The locomotive action involves diverse coordination, necessitating the integration of multiple motor neural circuits. However, the precise circuitry mechanism governing emotion-driven accelerated locomotion remains predominantly elusive. Here we dissect projections from the tuberomammillary nucleus (TMN) to subiculum (SUB) which promote alert-driven accelerated locomotion. We find that TMN histaminergic neurons respond to high-speed locomotion in both natural and alert acceleration. The TMN-SUB circuit is sufficient but not essential for amplifying accelerated locomotion from low to high-speed movement in basal condition, but it is both sufficient and necessary in alert condition for modulating accelerated locomotion during high-speed escape behavior. TMN histaminergic neuron activates SUB glutamatergic "fast locomotor cell" that projects to retrosplenial granular cortex (RSG) mainly through histamine H2 receptor (H2R). This study reveals the critical role of the histamine-tuned SUB circuit in alert-driven accelerated locomotion in mice, providing a theoretical foundation for comprehending neural circuit mechanisms of instinctive behaviors under alert.

References
1.
Lin W, Xu L, Zheng Y, An S, Zhao M, Hu W . Whole-brain mapping of histaminergic projections in mouse brain. Proc Natl Acad Sci U S A. 2023; 120(14):e2216231120. PMC: 10083611. DOI: 10.1073/pnas.2216231120. View

2.
Alvarez E, Banzan A . Histamine in dorsal and ventral hippocampus. II. Effects of H1 and H2 histamine antagonists on exploratory behavior in male rats. Physiol Behav. 1986; 37(1):39-45. DOI: 10.1016/0031-9384(86)90381-1. View

3.
Issa J, Radvansky B, Xuan F, Dombeck D . Lateral entorhinal cortex subpopulations represent experiential epochs surrounding reward. Nat Neurosci. 2024; 27(3):536-546. PMC: 11097142. DOI: 10.1038/s41593-023-01557-4. View

4.
Caggiano V, Leiras R, Goni-Erro H, Masini D, Bellardita C, Bouvier J . Midbrain circuits that set locomotor speed and gait selection. Nature. 2018; 553(7689):455-460. PMC: 5937258. DOI: 10.1038/nature25448. View

5.
Krsiak M . Effects of drugs on behaviour of aggressive mice. Br J Pharmacol. 1979; 65(3):525-33. PMC: 1668640. DOI: 10.1111/j.1476-5381.1979.tb07861.x. View