Synaptotagmin-7-mediated activation of spontaneous NMDAR currents is disrupted in bipolar disorder susceptibility variants.

Synaptotagmin-7-mediated activation of spontaneous NMDAR currents is disrupted in bipolar disorder susceptibility variants.
复制标题

Synaptotagmin-7 介导的自发 NMDAR 电流激活在双相情感障碍易感性变异中被破坏

DOI:
10.1371/journal.pbio.3001323
复制
发表时间:
2021-07
期刊:
影响因子:
9.8
通讯作者:
Yao J
Yao J
中科院分区:
生物学1区
文献类型:
--
作者:
Wang QW;Wang YH;Wang B;Chen Y;Lu SY;Yao J

文献摘要

参考文献

相似文献

Synaptotagmin-7 (Syt7) 在突触中多种形式的囊泡胞吐作用中发挥直接或冗余的 Ca2+ 传感器作用。在这里,我们证明 Syt7 是一种冗余 Ca2+ 传感器,与 Syt1/Doc2 一起驱动自发谷氨酸释放,其独特的功能是激活突触后含有 GluN2B 的 NMDAR,从而显着导致精神疾病。在缺乏 Syt1/Doc2 的小鼠海马神经元中,Syt7 失活很大程度上减少了自发释放。使用两种方法,包括测量 Ca2+ 剂量反应和用 Sr2+ 替代细胞外 Ca2+,我们检测到 Syt7 通过其 Ca2+ 结合基序直接触发自发释放,从而激活 GluN2B-NMDAR。此外,修改 Syt7 在活性区的定位仍然允许 Syt7 驱动自发释放,但 GluN2B-NMDAR 活性被废除。最后,在双相情感障碍患者中鉴定出的 Syt7 SNP 破坏了患者 iPSC 来源和小鼠海马神经元自发释放的 Syt7 功能。因此,Syt7 可能通过驱动自发谷氨酸释放而导致神经精神疾病。 Synaptotagmin-7 (Syt7) 变异体与双相情感障碍的易感性相关;这项研究表明,Syt7 作为钙传感器来驱动自发谷氨酸释放,从而独特地激活突触后含有 GluN2B 的谷氨酸受体。有趣的是,Syt7 的这种功能在双相情感障碍易感性变异体中被破坏。
Synaptotagmin-7 (Syt7) plays direct or redundant Ca2+ sensor roles in multiple forms of vesicle exocytosis in synapses. Here, we show that Syt7 is a redundant Ca2+ sensor with Syt1/Doc2 to drive spontaneous glutamate release, which functions uniquely to activate the postsynaptic GluN2B-containing NMDARs that significantly contribute to mental illness. In mouse hippocampal neurons lacking Syt1/Doc2, Syt7 inactivation largely diminishes spontaneous release. Using 2 approaches, including measuring Ca2+ dose response and substituting extracellular Ca2+ with Sr2+, we detect that Syt7 directly triggers spontaneous release via its Ca2+ binding motif to activate GluN2B-NMDARs. Furthermore, modifying the localization of Syt7 in the active zone still allows Syt7 to drive spontaneous release, but the GluN2B-NMDAR activity is abolished. Finally, Syt7 SNPs identified in bipolar disorder patients destroy the function of Syt7 in spontaneous release in patient iPSC-derived and mouse hippocampal neurons. Therefore, Syt7 could contribute to neuropsychiatric disorders through driving spontaneous glutamate release. Synaptotagmin-7 (Syt7) variants are associated with susceptibility to bipolar disorder; this study shows that Syt7 acts as a calcium sensor to drive spontaneous glutamate release which uniquely activates postsynaptic GluN2B-containing glutamate receptors. Interestingly, this function of Syt7 is disrupted in bipolar disorder susceptibility variants.
DOI: 10.1038/nature10130
发表时间: 2011-06-15
期刊: NATURE
影响因子: 64.8
作者:
Autry, Anita E.;Adachi, Megunai;Nosyreva, Elena;Na, Elisa S.;Los, Maarten F.;Cheng, Peng-fei;Kavalali, Ege T.;Monteggia, Lisa M.
通讯作者: Monteggia, Lisa M.
DOI: 10.1006/bbrc.1995.1062
发表时间: 1995-01-17
影响因子: 3.1
作者:
ORITA, S;SASAKI, T;TAKAI, Y
通讯作者: TAKAI, Y
Synaptotagmin 7充当CA2+传感器,用于突触囊泡补充。
DOI: 10.7554/elife.01524
发表时间: 2014-02-25
期刊: eLife
影响因子: 7.7
作者:
Liu H;Bai H;Hui E;Yang L;Evans CS;Wang Z;Kwon SE;Chapman ER
通讯作者: Chapman ER
突触前储存的CA(2+)进入驱动兴奋性的自发神经传递并增强内质网应激。
DOI: 10.1016/j.neuron.2021.02.023
发表时间: 2021-04-21
期刊: Neuron
影响因子: 16.2
作者:
Chanaday NL;Nosyreva E;Shin OH;Zhang H;Aklan I;Atasoy D;Bezprozvanny I;Kavalali ET
通讯作者: Kavalali ET
DOI: 10.1016/0092-8674(94)90556-8
发表时间: 1994-11-18
期刊: CELL
影响因子: 64.5
作者:
GEPPERT, M;GODA, Y;SUDHOF, TC
通讯作者: SUDHOF, TC