GM130 is required for compartmental organization of dendritic golgi outposts.

GM130 is required for compartmental organization of dendritic golgi outposts.
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GM130 是树突高尔基体前哨的区室组织所必需的。

DOI:
10.1016/j.cub.2014.04.008
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发表时间:
2014-06-02
期刊:
影响因子:
9.2
通讯作者:
Ye, Bing
Ye, Bing
中科院分区:
生物学1区
文献类型:
--
作者:
Zhou, Wei;Chang, Jin;Wang, Xin;Savelieff, Masha G.;Zhao, Yinyin;Ke, Shanshan;Ye, Bing

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高尔基复合物在神经元的发育和功能中起着重要的作用。高尔基体不仅存在于神经元体(染色体高尔基体)中,而且作为高尔基体前哨存在于树突中。先前的研究表明,高尔基前哨在树突中充当局部微管组织中心和分泌站。目前尚不清楚高尔基体前哨的结构和功能是否与染色体高尔基体不同。在果蝇中,我们发现,与染色体高尔基体不同,生物化学上不同的顺式、内侧和跨式高尔基体在体内树突中经常断开。高尔基结构蛋白GM130负责连接不同的高尔基区室和树突分支点,GM130的特定分布决定了树突高尔基在树突轴中的区室组织。我们进一步表明,区室组织调节高尔基体在树突和树突分支的无囊体微管生长中的作用。我们的研究提供了对树突高尔基前哨的结构和功能以及高尔基的区室组织的一般调节的见解。
Golgi complexes (Golgi) play important roles in the development and function of neurons. Not only are Golgi present in the neuronal soma (somal Golgi) but they also exist in the dendrites as Golgi outposts. Previous studies have shown that Golgi outposts serve as local microtubule organizing centers and secretory stations in dendrites. It is unknown whether the structure and function of Golgi outposts differ from those of somal Golgi. Here we show in Drosophila that, unlike somal Golgi, the biochemically distinct cis, medial, and trans compartments of Golgi are often disconnected in dendrites in vivo. The Golgi structural protein GM130 is responsible for connecting distinct Golgi compartments in soma and dendritic branch points, and specific distribution of GM130 determines the compartmental organization of dendritic Golgi in dendritic shafts. We further show that compartmental organization regulates the role of Golgi in acentrosomal microtubule growth in dendrites and in dendritic branching. Our study provides insights into the structure and function of dendritic Golgi outposts as well as the regulation of compartmental organization of Golgi in general.
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