A three-pool model dissecting readily releasable pool replenishment at the calyx of held.
A three-pool model dissecting readily releasable pool replenishment at the calyx of held.
复制标题
三池模型在持有的花萼处解剖易于释放的池补充。
DOI:
10.1038/srep09517
复制
发表时间:
2015-03-31
影响因子:
4.6
通讯作者:
Xue L
中科院分区:
文献类型:
--
作者:
Guo J;Ge JL;Hao M;Sun ZC;Wu XS;Zhu JB;Wang W;Yao PT;Lin W;Xue L
Although vesicle replenishment is critical in maintaining exo-endocytosis recycling, the underlying mechanisms are not well understood. Previous studies have shown that both rapid and slow endocytosis recycle into a very large recycling pool instead of within the readily releasable pool (RRP) and the time course of RRP replenishment is slowed down by more intense stimulation. This finding contradicts the calcium/calmodulin-dependence of RRP replenishment. Here we address this issue and report a three-pool model for RRP replenishment at a central synapse. Both rapid and slow endocytosis provide vesicles to a large reserve pool (RP) ~42.3 times the RRP size. When moving from the RP to the RRP, vesicles entered an intermediate pool (IP) ~2.7 times the RRP size with slow RP-IP kinetics and fast IP-RRP kinetics, which was responsible for the well-established slow and rapid components of RRP replenishment. Depletion of the IP caused the slower RRP replenishment observed after intense stimulation. These results establish, for the first time, a realistic cycling model with all parameters measured, revealing the contribution of each cycling step in synaptic transmission. The results call for modification of the current view of the vesicle recycling steps and their roles.
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影响因子:
16.2
作者:
Hua, Yunfeng;Woehler, Andrew;Klingauf, Juergen
通讯作者:
Klingauf, Juergen
DOI:
10.1523/jneurosci.5058-11.2012
发表时间:
2012-03-21
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Orenbuch A;Shalev L;Marra V;Sinai I;Lavy Y;Kahn J;Burden JJ;Staras K;Gitler D
通讯作者:
Gitler D
影响因子:
16.2
作者:
Jockusch, WJ;Praefcke, GJK;Lagnado, L
通讯作者:
Lagnado, L
影响因子:
5.3
作者:
Kushmerick, C;Renden, R;von Gersdorff, H
通讯作者:
von Gersdorff, H
影响因子:
5.3
作者:
Hosoi, Nobutake;Sakaba, Takeshi;Neher, Erwin
通讯作者:
Neher, Erwin