Axonal control of the adult neural stem cell niche.

Axonal control of the adult neural stem cell niche.
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DOI:
10.1016/j.stem.2014.01.014
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发表时间:
2014-04-03
期刊:
影响因子:
23.9
通讯作者:
Alvarez-Buylla, Arturo
Alvarez-Buylla, Arturo
中科院分区:
医学1区
文献类型:
--
作者:
Tong, Cheuk Ka;Chen, Jiadong;Cebrian-Silla, Arantxa;Mirzadeh, Zaman;Obernier, Kirsten;Guinto, Cristina D.;Tecott, Laurence H.;Manuel Garcia-Verdugo, Jose;Kriegstein, Arnold;Alvarez-Buylla, Arturo

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脑室-脑室下区(V-SVZ)是位于成年人侧脑室壁内的一个广泛分布的神经干细胞(NSC)生长龛。成年人大脑的神经活动如何影响成年人神经干细胞的行为在很大程度上仍然是未知的。我们发现,多巴胺能(5 HT)轴突起源于一小群神经元在中缝形成广泛的神经丛上的心室壁。电子显微镜显示5 HT轴突与神经干细胞(B1)或室管膜细胞(E1)之间有密切的接触,这些细胞被注射到中缝的跨突触病毒示踪剂标记。B1细胞表达5 HT受体2C和5A。电生理学表明,这些受体在B1细胞中的激活诱导小内向电流。脑室注射5 HT 2C激动剂或拮抗剂分别增加或减少V-SVZ增殖。这些结果表明,室管膜上5 HT轴突直接与神经干细胞相互作用,通过5 HT 2C调节神经发生。
The ventricular-subventricular zone (V-SVZ) is an extensive germinal niche containing neural stem cells (NSC) in the walls of the lateral ventricles of the adult brain. How the adult brain’s neural activity influences the behavior of adult NSCs remains largely unknown. We show that serotonergic (5HT) axons originating from a small group of neurons in the raphe form an extensive plexus on most of the ventricular walls. Electron microscopy revealed intimate contacts between 5HT axons and NSCs (B1) or ependymal cells (E1) and these cells were labeled by a transsynaptic viral tracer injected into the raphe. B1 cells express the 5HT receptors 2C and 5A. Electrophysiology showed that activation of these receptors in B1 cells induced small inward currents. Intraventricular infusion of 5HT2C agonist or antagonist increased or decreased V-SVZ proliferation, respectively. These results indicate that supraependymal 5HT axons directly interact with NSCs to regulate neurogenesis via 5HT2C.
DOI: 10.1038/sj.npp.1300320
发表时间: 2004-03-01
影响因子: 7.6
作者:
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通讯作者: Daszuta, A
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发表时间: 2012-06-14
期刊: CELL STEM CELL
影响因子: 23.9
作者:
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通讯作者: Alvarez-Buylla, Arturo