Wnt Signaling Through Nitric Oxide Synthase Promotes the Formation of Multi-Innervated Spines.
Wnt Signaling Through Nitric Oxide Synthase Promotes the Formation of Multi-Innervated Spines.
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DOI:
10.3389/fnsyn.2020.575863
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发表时间:
2020
影响因子:
3.7
通讯作者:
Salinas PC
中科院分区:
文献类型:
--
作者:
McLeod F;Boyle K;Marzo A;Martin-Flores N;Moe TZ;Palomer E;Gibb AJ;Salinas PC
Structural plasticity of synapses correlates with changes in synaptic strength. Dynamic modifications in dendritic spine number and size are crucial for long-term potentiation (LTP), the cellular correlate of learning and memory. Recent studies have suggested the generation of multi-innervated spines (MIS), in the form of several excitatory presynaptic inputs onto one spine, are crucial for hippocampal memory storage. However, little is known about the molecular mechanisms underlying MIS formation and their contribution to LTP. Using 3D enhanced resolution confocal images, we examined the contribution of Wnt synaptic modulators in MIS formation in the context of LTP. We show that blockage of endogenous Wnts with specific Wnt antagonists supresses the formation of MIS upon chemical LTP induction in cultured hippocampal neurons. Gain- and loss-of-function studies demonstrate that Wnt7a signaling promotes MIS formation through the postsynaptic Wnt scaffold protein Disheveled 1 (Dvl1) by stimulating neuronal nitric oxide (NO) synthase (nNOS). Subsequently, NO activates soluble guanylyl cyclase (sGC) to increase MIS formation. Consistently, we observed an enhanced frequency and amplitude of excitatory postsynaptic currents. Collectively, our findings identify a unique role for Wnt secreted proteins through nNOS/NO/sGC signaling to modulate MIS formation during LTP.
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影响因子:
16.6
作者:
Ciani L;Marzo A;Boyle K;Stamatakou E;Lopes DM;Anane D;McLeod F;Rosso SB;Gibb A;Salinas PC
通讯作者:
Salinas PC
DOI:
10.1523/jneurosci.1746-10.2010
发表时间:
2010-09-01
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Fortin DA;Davare MA;Srivastava T;Brady JD;Nygaard S;Derkach VA;Soderling TR
通讯作者:
Soderling TR
影响因子:
3.7
作者:
Bartus, Katalin;Pigott, Beatrice;Garthwaite, John
通讯作者:
Garthwaite, John
DOI:
10.1073/pnas.0609307104
发表时间:
2007-03-06
影响因子:
11.1
作者:
Ehrlich, Ingrid;Klein, Matthew;Malinow, Roberto
通讯作者:
Malinow, Roberto
影响因子:
5.3
作者:
Bureau, Ingrid;Shepherd, Gordon M. G.;Svoboda, Karel
通讯作者:
Svoboda, Karel