The 7q11.23 Protein DNAJC30 Interacts with ATP Synthase and Links Mitochondria to Brain Development.

The 7q11.23 Protein DNAJC30 Interacts with ATP Synthase and Links Mitochondria to Brain Development.
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DOI:
10.1016/j.cell.2018.09.014
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发表时间:
2018-11-01
期刊:
影响因子:
64.5
通讯作者:
Sestan N
Sestan N
中科院分区:
生物学1区
文献类型:
--
作者:
Tebbenkamp ATN;Varela L;Choi J;Paredes MI;Giani AM;Song JE;Sestan-Pesa M;Franjic D;Sousa AMM;Liu ZW;Li M;Bichsel C;Koch M;Szigeti-Buck K;Liu F;Li Z;Kawasawa YI;Paspalas CD;Mineur YS;Prontera P;Merla G;Picciotto MR;Arnsten AFT;Horvath TL;Sestan N

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尽管拷贝数变异(CNVs)与人类神经发育障碍的因果关系是已知的,但每个基因对神经表型的贡献背后的机制仍然是难以捉摸的。本研究通过对威廉姆斯综合征(WS)的发病机制--7q11.23 CNV的研究发现,线粒体功能异常参与了WS的发病机制。功能障碍部分由7q11.23蛋白DNAJC 30促进,其与线粒体ATP合酶机制相互作用。在小鼠中去除DNAJC 30导致线粒体功能减退,新皮层锥体神经元的形态特征减少,以及行为改变,让人想起WS。线粒体特征与我们在WS中观察到的氧化磷酸化超复合物和ATP合酶二聚体的完整性降低一致。因此,我们揭示DNAJC 30作为ATP合酶机制的一种新的辅助成分,并将线粒体疾病与WS相关的脑发育和功能缺陷联系起来。
Despite the known causality of copy number variations (CNVs) to human neurodevelopmental disorders, the mechanisms behind each genes’ contribution to the constellation of neural phenotypes remains elusive. Here, we investigated the 7q11.23 CNV, whose hemideletion causes Williams syndrome (WS), and uncovered mitochondrial dysfunction participates in WS pathogenesis. Dysfunction is facilitated in part by the 7q11.23 protein DNAJC30, which interacts with mitochondrial ATP synthase machinery. Removal of Dnajc30 in mice resulted in hypofunctional mitochondria, diminished morphological features of neocortical pyramidal neurons, and altered behaviors reminiscent of WS. The mitochondrial features are consistent with the decreased integrity of oxidative phosphorylation supercomplexes and ATP synthase dimers we observed in WS. Thus, we reveal DNAJC30 as a novel auxiliary component of ATP synthase machinery, and link mitochondrial maladies as underlying certain defects in brain development and function associated with WS.
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