TY - JOUR
T1 - Exercise-induced enhancement of synaptic function triggered by the inverse BAR protein, Mtss1L
AU - Chatzi, Christina
AU - Zhang, Yingyu
AU - Hendricks, Wiiliam D.
AU - Chen, Yang
AU - Schnell, Eric
AU - Goodman, Richard H.
AU - Westbrook, Gary L.
N1 - Publisher Copyright:
© Chatzi et al.
PY - 2019/6
Y1 - 2019/6
N2 - Exercise is a potent enhancer of learning and memory, yet we know little of the underlying mechanisms that likely include alterations in synaptic efficacy in the hippocampus. To address this issue, we exposed mice to a single episode of voluntary exercise, and permanently marked activated mature hippocampal dentate granule cells using conditional Fos-TRAP mice. Exercise-activated neurons (Fos-TRAPed) showed an input-selective increase in dendritic spines and excitatory postsynaptic currents at 3 days post-exercise, indicative of exercise-induced structural plasticity. Laser-capture microdissection and RNASeq of activated neurons revealed that the most highly induced transcript was Mtss1L, a little-studied I-BAR domain-containing gene, which we hypothesized could be involved in membrane curvature and dendritic spine formation. shRNAmediated Mtss1L knockdown in vivo prevented the exercise-induced increases in spines and excitatory postsynaptic currents. Our results link short-term effects of exercise to activitydependent expression of Mtss1L, which we propose as a novel effector of activity-dependent rearrangement of synapses.
AB - Exercise is a potent enhancer of learning and memory, yet we know little of the underlying mechanisms that likely include alterations in synaptic efficacy in the hippocampus. To address this issue, we exposed mice to a single episode of voluntary exercise, and permanently marked activated mature hippocampal dentate granule cells using conditional Fos-TRAP mice. Exercise-activated neurons (Fos-TRAPed) showed an input-selective increase in dendritic spines and excitatory postsynaptic currents at 3 days post-exercise, indicative of exercise-induced structural plasticity. Laser-capture microdissection and RNASeq of activated neurons revealed that the most highly induced transcript was Mtss1L, a little-studied I-BAR domain-containing gene, which we hypothesized could be involved in membrane curvature and dendritic spine formation. shRNAmediated Mtss1L knockdown in vivo prevented the exercise-induced increases in spines and excitatory postsynaptic currents. Our results link short-term effects of exercise to activitydependent expression of Mtss1L, which we propose as a novel effector of activity-dependent rearrangement of synapses.
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U2 - 10.7554/eLife.45920.001
DO - 10.7554/eLife.45920.001
M3 - Article
C2 - 31232686
AN - SCOPUS:85069271978
SN - 2050-084X
VL - 8
JO - eLife
JF - eLife
M1 - e45920
ER -