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Yau HJ, Wang DV, Tsou JH, Chuang YF, Chen BT, Deisseroth K, Ikemoto S, Bonci A. Pontomesencephalic Tegmental Afferents to VTA Non-dopamine Neurons Are Necessary for Appetitive Pavlovian Learning. Cell Rep 2016; 16:2699-2710. [PMID: 27568569 DOI: 10.1016/j.celrep.2016.08.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 06/28/2016] [Accepted: 07/31/2016] [Indexed: 12/23/2022] Open
Abstract
The ventral tegmental area (VTA) receives phenotypically distinct innervations from the pedunculopontine tegmental nucleus (PPTg). While PPTg-to-VTA inputs are thought to play a critical role in stimulus-reward learning, direct evidence linking PPTg-to-VTA phenotypically distinct inputs in the learning process remains lacking. Here, we used optogenetic approaches to investigate the functional contribution of PPTg excitatory and inhibitory inputs to the VTA in appetitive Pavlovian conditioning. We show that photoinhibition of PPTg-to-VTA cholinergic or glutamatergic inputs during cue presentation dampens the development of anticipatory approach responding to the food receptacle during the cue. Furthermore, we employed in vivo optetrode recordings to show that photoinhibition of PPTg cholinergic or glutamatergic inputs significantly decreases VTA non-dopamine (non-DA) neural activity. Consistently, photoinhibition of VTA non-DA neurons disrupts the development of cue-elicited anticipatory approach responding. Taken together, our study reveals a crucial regulatory mechanism by PPTg excitatory inputs onto VTA non-DA neurons during appetitive Pavlovian conditioning.
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Affiliation(s)
- Hau-Jie Yau
- Synaptic Plasticity Section, Intramural Research Program, National Institute on Drug Abuse, NIH, U.S. Department of Health and Human Services, Baltimore, MD 21224, USA; Graduate Institute of Brain and Mind Sciences, National Taiwan University, Taipei 10051, Taiwan
| | - Dong V Wang
- Neurocircuitry of Motivation Section, Intramural Research Program, National Institute on Drug Abuse, NIH, U.S. Department of Health and Human Services, Baltimore, MD 21224, USA
| | - Jen-Hui Tsou
- Synaptic Plasticity Section, Intramural Research Program, National Institute on Drug Abuse, NIH, U.S. Department of Health and Human Services, Baltimore, MD 21224, USA
| | - Yi-Fang Chuang
- Institute of Public Health, National Yang-Ming University, Taipei 112, Taiwan
| | - Billy T Chen
- Synaptic Plasticity Section, Intramural Research Program, National Institute on Drug Abuse, NIH, U.S. Department of Health and Human Services, Baltimore, MD 21224, USA; Ionis Pharmaceuticals Inc., Carlsbad, CA 92010, USA
| | - Karl Deisseroth
- Howard Hughes Medical Institute, Stanford University, Stanford, CA 94305, USA; Department of Bioengineering and Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA 94305, USA
| | - Satoshi Ikemoto
- Neurocircuitry of Motivation Section, Intramural Research Program, National Institute on Drug Abuse, NIH, U.S. Department of Health and Human Services, Baltimore, MD 21224, USA
| | - Antonello Bonci
- Synaptic Plasticity Section, Intramural Research Program, National Institute on Drug Abuse, NIH, U.S. Department of Health and Human Services, Baltimore, MD 21224, USA; Solomon H. Snyder Department of Neuroscience, Johns Hopkins University, Baltimore, MD 21205, USA; Department of Psychiatry, Johns Hopkins University, Baltimore, MD 21287, USA.
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