Teneurins instruct synaptic partner matching in an olfactory map.

Teneurins instruct synaptic partner matching in an olfactory map.
复制标题

DOI:
10.1038/nature10926
复制
发表时间:
2012-03-18
期刊:
影响因子:
64.8
通讯作者:
Luo, Liqun
Luo, Liqun
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Hong, Weizhe;Mosca, Timothy J.;Luo, Liqun

文献摘要

参考文献

被引文献

相似文献

神经元以非凡的精度相互连接,以组成一个功能性的神经系统。与轴突引导相比,人们对个体突触前和突触后伙伴如何匹配的了解要少得多。在果蝇中,约50类嗅觉受体神经元(orn)的轴突与约50类投射神经元(PNs)的树突形成一对一的连接,以确保嗅觉信息的正确传递。通过遗传筛选,我们发现了两个进化上保守的egf重复跨膜teneurin, Ten-m和Ten-a,作为PN树突和ORN轴突之间的突触伴侣匹配分子。Ten-m和Ten-a在选择的PN-ORN匹配对中高度表达。神经蛋白的功能丧失和功能获得导致特定的n- n和n- n不匹配。最后,teneurin在体外促进亲同性相互作用,Ten-m在非伴侣PNs和orn中的共表达促进了它们在体内的异位连接。我们提出tenneurin通过嗜同性吸引来指导突触伙伴之间的匹配特异性。
Neurons are interconnected with extraordinary precision to assemble a functional nervous system. Compared to axon guidance, far less is understood about how individual pre- and post-synaptic partners are matched. To ensure the proper relay of olfactory information in flies, axons of ~50 classes of olfactory receptor neurons (ORNs) form one-to-one connections with dendrites of ~50 classes of projection neurons (PNs). Using genetic screens, we identified two evolutionarily conserved EGF-repeat transmembrane Teneurins, Ten-m and Ten-a, as synaptic partner matching molecules between PN dendrites and ORN axons. Ten-m and Ten-a are highly expressed in select PN-ORN matching pairs. Teneurin loss- and gain-of-function cause specific mismatching of select ORNs and PNs. Finally, Teneurins promote homophilic interactions in vitro, and Ten-m co-expression in non-partner PNs and ORNs promotes their ectopic connections in vivo. We propose that Teneurins instruct matching specificity between synaptic partners through homophilic attraction.
DOI: 10.1016/0925-4773(93)90074-8
发表时间: 1993-03-01
影响因子: 2.6
作者:
BAUMGARTNER, S;CHIQUETEHRISMANN, R
通讯作者: CHIQUETEHRISMANN, R
DOI: 10.1002/dvdy.21284
发表时间: 2007-09-01
影响因子: 2.5
作者:
Kinel-Tahan, Yael;Weiss, Hanna;Wides, Ron
通讯作者: Wides, Ron
DOI: 10.1002/gene.10137
发表时间: 2002-09-01
期刊: GENESIS
影响因子: 1.5
作者:
Hayashi, S;Ito, K;Goto, S
通讯作者: Goto, S
DOI: 10.1016/j.cell.2006.12.028
发表时间: 2007-01-26
期刊: CELL
影响因子: 64.5
作者:
Komiyama, Takaki;Sweeney, Lora B.;Luo, Liqun
通讯作者: Luo, Liqun
DOI: 10.1038/nature05672
发表时间: 2007-03-29
期刊: NATURE
影响因子: 64.8
作者:
Kurtovic, Amina;Widmer, Alexandre;Dickson, Barry J.
通讯作者: Dickson, Barry J.