期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 114, 期 17, 页码 4525-4530出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1619700114
关键词
hypothalamus; GAD65; orexin; hypocretin; locomotion; stress
资金
- Francis Crick Institute
- Cancer Research UK
- UK Medical Research Council
- Wellcome Trust
- The Francis Crick Institute [10055] Funding Source: researchfish
Damage to the lateral hypothalamus (LH) causes profound physical inactivity in mammals. Severalmolecularly distinct types of LH neurons have been identified, including orexin cells and glutamic acid decarboxylase 65 (GAD65) cells, but their interplay in orchestrating physical activity is not fully understood. Here, using optogenetic circuit analysis and cell type-specific deep-brain recordings in behaving mice, we show that orexin cell activation rapidly recruits GAD65(LH) neurons. We demonstrate that internally initiated GAD65(LH) cell bursts precede and accompany spontaneous running bouts, that selective chemogenetic silencing of natural GAD65(LH) cell activity depresses voluntary locomotion, and that GAD65(LH) cell overactivation leads to hyperlocomotion. These results thus identify a molecularly distinct, orexin-activated LH submodule that governs physical activity in mice.
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