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.
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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
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发表时间:
2021-07
期刊:
影响因子:
9.8
通讯作者:
Yao J
中科院分区:
文献类型:
--
作者:
Wang QW;Wang YH;Wang B;Chen Y;Lu SY;Yao J
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.
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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
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
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
影响因子:
64.5
作者:
GEPPERT, M;GODA, Y;SUDHOF, TC
通讯作者:
SUDHOF, TC