BMP signaling and microtubule organization regulate synaptic strength.
BMP signaling and microtubule organization regulate synaptic strength.
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DOI:
10.1016/j.neuroscience.2015.01.069
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发表时间:
2015-04-16
期刊:
影响因子:
3.3
通讯作者:
Isacoff, E. Y.
中科院分区:
文献类型:
--
作者:
Ball, R. W.;Peled, E. S.;Guerrero, G.;Isacoff, E. Y.
关键词:
The strength of synaptic transmission between a neuron and multiple postsynaptic partners can vary considerably. We have studied synaptic heterogeneity using the glutamatergic Drosophila neuromuscular junction (NMJ), which contains multiple synaptic connections of varying strength between a motor axon and muscle fiber. In larval NMJs, there is a gradient of synaptic transmission from weak proximal to strong distal boutons. We imaged synaptic transmission with the postsynaptically targeted fluorescent calcium sensor SynapCam, to investigate the molecular pathways that determine synaptic strength and set up this gradient. We discovered that mutations in the Bone Morphogenetic Protein (BMP) signaling pathway disrupt production of strong distal boutons. We find that strong connections contain unbundled microtubules in the boutons, suggesting a role for microtubule organization in transmission strength. The spastin mutation, which disorganizes microtubules, disrupted the transmission gradient, supporting this interpretation. We propose that the BMP pathway, shown previously to function in the homeostatic regulation of synaptic growth, also boosts synaptic transmission in a spatially selective manner that depends on the microtubule system.
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影响因子:
25
作者:
Guerrero, G;Reiff, DF;Isacoff, EY
通讯作者:
Isacoff, EY
影响因子:
16.2
作者:
Haghighi, AP;McCabe, BD;Goodman, CS
通讯作者:
Goodman, CS
DOI:
10.1073/pnas.96.5.2135
发表时间:
1999-03-02
影响因子:
11.1
作者:
Miyawaki, A;Griesbeck, O;Tsien, RY
通讯作者:
Tsien, RY
DOI:
10.1083/jcb.201112135
发表时间:
2012-04-16
期刊:
The Journal of cell biology
影响因子:
--
作者:
de Jong AP;Schmitz SK;Toonen RF;Verhage M
通讯作者:
Verhage M
影响因子:
16.6
作者:
Ehmann, Nadine;van de Linde, Sebastian;Alon, Amit;Ljaschenko, Dmitrij;Keung, Xi Zhen;Holm, Thorge;Rings, Annika;DiAntonio, Aaron;Hallermann, Stefan;Ashery, Uri;Heckmann, Manfred;Sauer, Markus;Kittel, Robert J.
通讯作者:
Kittel, Robert J.