TY - JOUR
T1 - Coordinated Regulation of Synaptic Plasticity at Striatopallidal and Striatonigral Neurons Orchestrates Motor Control
AU - Trusel, Massimo
AU - Cavaccini, Anna
AU - Gritti, Marta
AU - Greco, Barbara
AU - Saintot, Pierre Philippe
AU - Nazzaro, Cristiano
AU - Cerovic, Milica
AU - Morella, Ilaria
AU - Brambilla, Riccardo
AU - Tonini, Raffaella
N1 - Publisher Copyright:
© 2015 The Authors.
PY - 2015/11/17
Y1 - 2015/11/17
N2 - The basal ganglia play a critical role in shaping motor behavior. For this function, the activity of medium spiny neurons (MSNs) of the striatonigral and striatopallidal pathways must be integrated. It remains unclear whether the activity of the two pathways is primarily coordinated by synaptic plasticity mechanisms. Using a model of Parkinson's disease, we determined the circuit and behavioral effects of concurrently regulating cell-type-specific forms of corticostriatal long-term synaptic depression (LTD) by inhibiting small-conductance Ca2+-activated K+ channels (SKs) of the dorsolateral striatum. At striatopallidal synapses, SK channel inhibition rescued the disease-linked deficits in endocannabinoid (eCB)-dependent LTD. At striatonigral cells, inhibition of these channels counteracted a form of adenosine-mediated LTD by activating the ERK cascade. Interfering with eCB-, adenosine-, and ERK signaling in vivo alleviated motor abnormalities, which supports that synaptic modulation of striatal pathways affects behavior. Thus, our results establish a central role of coordinated synaptic plasticity at MSN subpopulations in motor control.
AB - The basal ganglia play a critical role in shaping motor behavior. For this function, the activity of medium spiny neurons (MSNs) of the striatonigral and striatopallidal pathways must be integrated. It remains unclear whether the activity of the two pathways is primarily coordinated by synaptic plasticity mechanisms. Using a model of Parkinson's disease, we determined the circuit and behavioral effects of concurrently regulating cell-type-specific forms of corticostriatal long-term synaptic depression (LTD) by inhibiting small-conductance Ca2+-activated K+ channels (SKs) of the dorsolateral striatum. At striatopallidal synapses, SK channel inhibition rescued the disease-linked deficits in endocannabinoid (eCB)-dependent LTD. At striatonigral cells, inhibition of these channels counteracted a form of adenosine-mediated LTD by activating the ERK cascade. Interfering with eCB-, adenosine-, and ERK signaling in vivo alleviated motor abnormalities, which supports that synaptic modulation of striatal pathways affects behavior. Thus, our results establish a central role of coordinated synaptic plasticity at MSN subpopulations in motor control.
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U2 - 10.1016/j.celrep.2015.10.009
DO - 10.1016/j.celrep.2015.10.009
M3 - Article
C2 - 26549453
AN - SCOPUS:84947322471
SN - 2211-1247
VL - 13
SP - 1353
EP - 1365
JO - Cell Reports
JF - Cell Reports
IS - 7
ER -