한빛사논문
Young Hee Lee1,2,7, Yu-Been Kim1,2,7, Kyu Sik Kim1,2,7, Mirae Jang1,3,7, Ha Young Song1,2, Sang-Ho Jung1,2, Dong-Soo Ha1,2, Joon Seok Park1,2, Jaegeon Lee1,3, Kyung Min Kim1,2, Deok-Hyeon Cheon1,2, Inhyeok Baek1,2, Min-Gi Shin4, Eun Jeong Lee4, Sang Jeong Kim 1,3,5,6,8 & Hyung Jin Choi1,2,5,6,8
1Department of Biomedical Sciences, Seoul National University College of Medicine, 103 Daehak-roJongno-gu Seoul 03080, Republic of Korea.
2Department of Anatomy and Cell Biology, Seoul National University College of Medicine, 103 Daehak-roJongno-gu Seoul 03080, Republic of Korea.
3Department of Physiology, Seoul National University College of Medicine, 103 Daehak-roJongno-gu Seoul 03080, Republic of Korea.
4Department of Brain Science, Ajou University School of Medicine, Suwon 16499, Republic of Korea.
5Neuroscience Research Institute, Seoul National University College of Medicine, 103 Daehak-roJongno-gu Seoul 03080, Republic of Korea.
6Wide River Institute of Immunology, Seoul National University, 101 Dabyeonbat-gilHwachon-myeon Gangwon-do 25159, Republic of Korea.
7These authors contributed equally: Young Hee Lee, Yu-Been Kim, Kyu Sik Kim, Mirae Jang.
8These authors jointly supervised this work: Sang Jeong Kim, Hyung Jin Choi.
Corresponding author : Correspondence to Hyung Jin Choi.
Abstract
For survival, it is crucial for eating behaviours to be sequenced through two distinct seeking and consummatory phases. Heterogeneous lateral hypothalamus (LH) neurons are known to regulate motivated behaviours, yet which subpopulation drives food seeking and consummatory behaviours have not been fully addressed. Here, in male mice, fibre photometry recordings demonstrated that LH leptin receptor (LepR) neurons are correlated explicitly in both voluntary seeking and consummatory behaviours. Further, micro-endoscope recording of the LHLepR neurons demonstrated that one subpopulation is time-locked to seeking behaviours and the other subpopulation time-locked to consummatory behaviours. Seeking or consummatory phase specific paradigm revealed that activation of LHLepR neurons promotes seeking or consummatory behaviours and inhibition of LHLepR neurons reduces consummatory behaviours. The activity of LHLepR neurons was increased via Neuropeptide Y (NPY) which acted as a tonic permissive gate signal. Our results identify neural populations that mediate seeking and consummatory behaviours and may lead to therapeutic targets for maladaptive food seeking and consummatory behaviours.
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