PMID- 12441056 OWN - NLM STAT- MEDLINE DCOM- 20021219 LR - 20190822 IS - 0896-6273 (Print) IS - 0896-6273 (Linking) VI - 36 IP - 4 DP - 2002 Nov 14 TI - Localized synaptic potentiation by BDNF requires local protein synthesis in the developing axon. PG - 675-88 AB - Brain-derived neurotrophic factor (BDNF) is known to promote neuronal survival, guide axonal pathfinding, and participate in activity-dependent synaptic plasticity. In Xenopus nerve-muscle cultures, localized contact of a single BDNF-coated bead with the presynaptic axon resulted in potentiation of transmitter secretion at the developing synapses, but only when the bead was placed within 60 microm from the synapse. The localized potentiation induced by BDNF is accompanied by a persistent local elevation of [Ca(2+)](i) in the axon and requires constitutive presynaptic protein translation, even for axons severed from the cell body. Thus, presynaptic local TrkB signaling and protein synthesis allow a localized source of BDNF to potentiate transmitter secretion from nearby synapses, a property suited for spatially restricted synaptic modification by neurotrophins. FAU - Zhang, Xiao hui AU - Zhang Xh AD - Division of Neurobiology, Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA. FAU - Poo, Mu-ming AU - Poo MM LA - eng GR - NS 37831/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Neuron JT - Neuron JID - 8809320 RN - 0 (Brain-Derived Neurotrophic Factor) RN - EC 2.7.10.1 (Receptor, trkB) RN - N9YNS0M02X (Acetylcholine) RN - SY7Q814VUP (Calcium) SB - IM CIN - Neuron. 2002 Nov 14;36(4):549-50. PMID: 12441043 MH - Acetylcholine/metabolism MH - Animals MH - Brain-Derived Neurotrophic Factor/*metabolism/pharmacology MH - Calcium/metabolism MH - Calcium Signaling/drug effects/physiology MH - Cell Differentiation/drug effects/*physiology MH - Embryo, Nonmammalian MH - Excitatory Postsynaptic Potentials/drug effects/physiology MH - Microspheres MH - Motor Neurons/cytology/drug effects/metabolism MH - Muscle, Skeletal/embryology/innervation MH - Neuromuscular Junction/cytology/drug effects/*embryology MH - Presynaptic Terminals/drug effects/*metabolism/ultrastructure MH - Receptor, trkB/antagonists & inhibitors/*biosynthesis MH - Synaptic Transmission/drug effects/*physiology MH - Xenopus laevis EDAT- 2002/11/21 04:00 MHDA- 2002/12/20 04:00 CRDT- 2002/11/21 04:00 PHST- 2002/11/21 04:00 [pubmed] PHST- 2002/12/20 04:00 [medline] PHST- 2002/11/21 04:00 [entrez] AID - S0896627302010231 [pii] AID - 10.1016/s0896-6273(02)01023-1 [doi] PST - ppublish SO - Neuron. 2002 Nov 14;36(4):675-88. doi: 10.1016/s0896-6273(02)01023-1.