PMID- 18671735 OWN - NLM STAT- MEDLINE DCOM- 20090305 LR - 20211020 IS - 1460-9568 (Electronic) IS - 0953-816X (Print) IS - 0953-816X (Linking) VI - 28 IP - 5 DP - 2008 Sep TI - The brain-derived neurotrophic factor receptor TrkB is critical for the acquisition but not expression of conditioned incentive value. PG - 997-1002 LID - 10.1111/j.1460-9568.2008.06383.x [doi] AB - Stimuli paired with reward acquire incentive properties that are important for many aspects of motivated behavior, such as feeding and drug-seeking. Here we used a novel chemical-genetic strategy to determine the role of the brain-derived neurotrophic factor (BDNF) receptor TrkB, known to be critical to many aspects of neural development and plasticity, during acquisition and expression of positive incentive value by a cue paired with food. We assessed that cue's learned incentive value in a conditioned reinforcement task, in which its ability to reinforce instrumental responding later, in the absence of food itself, was examined. In TrkB (F616A) knock-in mice, TrkB kinase activity was suppressed by administering the TrkB inhibitor 1NMPP1 during the period of initial cue incentive learning only (i.e. Pavlovian training), during nose-poke conditioned reinforcement testing only, during both phases, or during neither phase. All mice acquired cue-food associations as indexed by approach responses. However, TrkB (F616A) mice that received 1NMPP1 during initial cue incentive learning failed to show conditioned reinforcement of nose-poking, regardless of their treatment in testing, whereas administration of 1NMMP1 only during the testing phase had no effect. The effects of 1NMPP1 administration were due to inhibition of TrkB(F616A), because the performance of wild-type mice was unaffected by administration of the compound during either phase. These data indicate that BDNF or NT4 signaling through TrkB receptors is required for the acquisition of positive incentive value, but is not needed for the expression of previously acquired incentive value in the reinforcement of instrumental behavior. FAU - Johnson, Alexander W AU - Johnson AW AD - Department of Psychological and Brain Sciences, Neurogenetics and Behavior Center, Johns Hopkins University, Baltimore, MD 21218, USA. awj@jhu.edu FAU - Chen, Xi AU - Chen X FAU - Crombag, Hans S AU - Crombag HS FAU - Zhang, Chao AU - Zhang C FAU - Smith, Dani R AU - Smith DR FAU - Shokat, Kevan M AU - Shokat KM FAU - Gallagher, Michela AU - Gallagher M FAU - Holland, Peter C AU - Holland PC FAU - Ginty, David D AU - Ginty DD LA - eng GR - P40 RR017688/RR/NCRR NIH HHS/United States GR - RR017688/RR/NCRR NIH HHS/United States GR - P40 RR017688-04/RR/NCRR NIH HHS/United States GR - R37 NS034814/NS/NINDS NIH HHS/United States GR - R37 NS034814-13/NS/NINDS NIH HHS/United States GR - NS34814/NS/NINDS NIH HHS/United States GR - AI044009/AI/NIAID NIH HHS/United States GR - R01 NS034814/NS/NINDS NIH HHS/United States GR - R01 AI044009-10/AI/NIAID NIH HHS/United States GR - HHMI/Howard Hughes Medical Institute/United States GR - R01 AI044009/AI/NIAID NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20080726 PL - France TA - Eur J Neurosci JT - The European journal of neuroscience JID - 8918110 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Enzyme Inhibitors) RN - 0 (Nerve Growth Factors) RN - EC 2.7.10.1 (Receptor, trkB) RN - P658DCA9XD (neurotrophin 4) SB - IM MH - Animals MH - Brain/*metabolism MH - Brain-Derived Neurotrophic Factor/*metabolism MH - Conditioning, Psychological/drug effects/*physiology MH - Cues MH - Enzyme Inhibitors/pharmacology MH - Feeding Behavior/drug effects/physiology MH - Female MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, Transgenic MH - *Motivation MH - Nerve Growth Factors/metabolism MH - Neuropsychological Tests MH - Receptor, trkB/antagonists & inhibitors/genetics/*metabolism MH - Reward MH - Signal Transduction/drug effects/physiology PMC - PMC2825165 MID - NIHMS161247 EDAT- 2008/08/02 09:00 MHDA- 2009/03/06 09:00 PMCR- 2010/02/19 CRDT- 2008/08/02 09:00 PHST- 2008/08/02 09:00 [pubmed] PHST- 2009/03/06 09:00 [medline] PHST- 2008/08/02 09:00 [entrez] PHST- 2010/02/19 00:00 [pmc-release] AID - EJN6383 [pii] AID - 10.1111/j.1460-9568.2008.06383.x [doi] PST - ppublish SO - Eur J Neurosci. 2008 Sep;28(5):997-1002. doi: 10.1111/j.1460-9568.2008.06383.x. Epub 2008 Jul 26.