PMID- 30089265 OWN - NLM STAT- MEDLINE DCOM- 20200127 LR - 20210109 IS - 2211-1247 (Electronic) VI - 24 IP - 6 DP - 2018 Aug 7 TI - Genetic Dissection of Presynaptic and Postsynaptic BDNF-TrkB Signaling in Synaptic Efficacy of CA3-CA1 Synapses. PG - 1550-1561 LID - S2211-1247(18)31110-0 [pii] LID - 10.1016/j.celrep.2018.07.020 [doi] AB - Brain-derived neurotrophic factor (BDNF) and its high-affinity receptor, tropomyosin receptor kinase B (TrkB), regulate long-term potentiation (LTP) in the hippocampus, although the sites of BDNF-TrkB receptors in this process are controversial. We used a viral-mediated approach to delete BDNF or TrkB specifically in CA1 and CA3 regions of the Schaffer collateral pathway. Deletion of BDNF in CA3 or CA1 revealed that presynaptic BDNF is involved in LTP induction, while postsynaptic BDNF contributes to LTP maintenance. Similarly, loss of presynaptic or postsynaptic TrkB receptors leads to distinct LTP deficits, with presynaptic TrkB required to maintain LTP, while postsynaptic TrkB is essential for LTP formation. In addition, loss of TrkB in CA3 significantly diminishes release probability, uncovering a role for presynaptic TrkB receptors in basal neurotransmission. Taken together, this direct comparison of presynaptic and postsynaptic BDNF-TrkB reveals insight into BDNF release and TrkB activation sites in hippocampal LTP. CI - Copyright (c) 2018. Published by Elsevier Inc. FAU - Lin, Pei-Yi AU - Lin PY AD - Department of Neuroscience, The University of Texas Southwestern Medical Center, Dallas, TX 75390-9111, USA. FAU - Kavalali, Ege T AU - Kavalali ET AD - Department of Neuroscience, The University of Texas Southwestern Medical Center, Dallas, TX 75390-9111, USA. FAU - Monteggia, Lisa M AU - Monteggia LM AD - Department of Neuroscience, The University of Texas Southwestern Medical Center, Dallas, TX 75390-9111, USA. Electronic address: lisa.monteggia@utsouthwestern.edu. LA - eng GR - R01 MH066198/MH/NIMH NIH HHS/United States GR - R01 MH070727/MH/NIMH NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PL - United States TA - Cell Rep JT - Cell reports JID - 101573691 RN - 0 (Receptors, Presynaptic) RN - EC 2.7.10.1 (Receptor, trkB) SB - IM MH - Animals MH - Humans MH - Mice MH - Receptor, trkB/*metabolism MH - Receptors, Presynaptic/*genetics MH - Signal Transduction MH - Synapses/*metabolism MH - Synaptic Potentials/*genetics PMC - PMC7176480 MID - NIHMS1563805 OTO - NOTNLM OT - BDNF OT - LTP OT - TrkB OT - hippocampus OT - postsynaptic OT - presynaptic OT - synaptic plasticity EDAT- 2018/08/09 06:00 MHDA- 2020/01/28 06:00 PMCR- 2020/04/22 CRDT- 2018/08/09 06:00 PHST- 2017/12/27 00:00 [received] PHST- 2018/05/31 00:00 [revised] PHST- 2018/07/05 00:00 [accepted] PHST- 2018/08/09 06:00 [entrez] PHST- 2018/08/09 06:00 [pubmed] PHST- 2020/01/28 06:00 [medline] PHST- 2020/04/22 00:00 [pmc-release] AID - S2211-1247(18)31110-0 [pii] AID - 10.1016/j.celrep.2018.07.020 [doi] PST - ppublish SO - Cell Rep. 2018 Aug 7;24(6):1550-1561. doi: 10.1016/j.celrep.2018.07.020.