Synapse type-specific proteomic dissection identifies IgSF8 as a hippocampal CA3 microcircuit organizer.
Synapse type-specific proteomic dissection identifies IgSF8 as a hippocampal CA3 microcircuit organizer.
复制标题
突触类型特异性蛋白质组学解剖鉴定IgSF8作为海马CA3微电路组织者。
DOI:
10.1038/s41467-020-18956-x
复制
发表时间:
2020-10-14
影响因子:
16.6
通讯作者:
de Wit J
中科院分区:
文献类型:
--
作者:
Apóstolo N;Smukowski SN;Vanderlinden J;Condomitti G;Rybakin V;Ten Bos J;Trobiani L;Portegies S;Vennekens KM;Gounko NV;Comoletti D;Wierda KD;Savas JN;de Wit J
Excitatory and inhibitory neurons are connected into microcircuits that generate circuit output. Central in the hippocampal CA3 microcircuit is the mossy fiber (MF) synapse, which provides powerful direct excitatory input and indirect feedforward inhibition to CA3 pyramidal neurons. Here, we dissect its cell-surface protein (CSP) composition to discover novel regulators of MF synaptic connectivity. Proteomic profiling of isolated MF synaptosomes uncovers a rich CSP composition, including many CSPs without synaptic function and several that are uncharacterized. Cell-surface interactome screening identifies IgSF8 as a neuronal receptor enriched in the MF pathway. Presynaptic Igsf8 deletion impairs MF synaptic architecture and robustly decreases the density of bouton filopodia that provide feedforward inhibition. Consequently, IgSF8 loss impairs excitation/inhibition balance and increases excitability of CA3 pyramidal neurons. Our results provide insight into the CSP landscape and interactome of a specific excitatory synapse and reveal IgSF8 as a critical regulator of CA3 microcircuit connectivity and function. Mossy fiber synapses are key in CA3 microcircuit function. Here, the authors profile the mossy fiber synapse proteome and cell-surface interactome. They uncover a diverse repertoire of cell-surface proteins and identify the receptor IgSF8 as a regulator of CA3 microcircuit connectivity and function.
登录
查看更多内容
影响因子:
3.3
作者:
Antoine-Bertrand J;Ghogha A;Luangrath V;Bedford FK;Lamarche-Vane N
通讯作者:
Lamarche-Vane N
影响因子:
2.5
作者:
AMARAL, DG;DENT, JA
通讯作者:
DENT, JA
影响因子:
4.4
作者:
Chen, Ning;Pandya, Nikhil J.;Li, Ka Wan
通讯作者:
Li, Ka Wan
影响因子:
3.3
作者:
Cijsouw T;Ramsey AM;Lam TT;Carbone BE;Blanpied TA;Biederer T
通讯作者:
Biederer T
影响因子:
16.2
作者:
Galimberti, Ivan;Bednarek, Ewa;Caroni, Pico
通讯作者:
Caroni, Pico