Large-scale imaging of subcellular calcium dynamics of cortical neurons with G-CaMP6-actin

Large-scale imaging of subcellular calcium dynamics of cortical neurons with G-CaMP6-actin
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使用 G-CaMP6-肌动蛋白对皮质神经元的亚细胞钙动态进行大规模成像

DOI:
10.1097/wnr.0000000000000126
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发表时间:
2014
期刊:
影响因子:
1.7
通讯作者:
他
他
中科院分区:
医学4区
文献类型:
--
作者:
小林千晃;他

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理解单个神经元执行的信息处理需要从包括树突和轴突在内的各种亚细胞区室监测生理动力学。在这项研究中,我们表明,表达的融合蛋白,由钙离子指示蛋白(G-CaMP 6)和细胞骨架蛋白(肌动蛋白),使大规模记录的钙离子动力学从数百突触后棘和突触前扣在皮层锥体细胞。在树突棘,G-CaMP 6-actin有可能检测到由阈下突触输入触发的局部Ca 2+活性。反向传播动作电位可靠地诱导所有脊髓中Ca 2+荧光增加。在轴突终扣处,G-CaMP 6-肌动蛋白报告了沿沿着轴突侧支传播的动作电位序列。G-CaMP 6-actin的可检测性有助于在单个突触水平上更深入地理解神经网络的结构和动力学。
Understanding the information processing performed by a single neuron requires the monitoring of physiological dynamics from a variety of subcellular compartments including dendrites and axons. In this study, we showed that the expression of a fusion protein, consisting of a Ca 2+ indicator protein (G-CaMP6) and a cytoskeleton protein (actin), enabled large-scale recording of Ca 2+ dynamics from hundreds of postsynaptic spines and presynaptic boutons in a cortical pyramidal cell. At dendritic spines, G-CaMP6-actin had the potential to detect localized Ca 2+ activity triggered by subthreshold synaptic inputs. Back-propagating action potentials reliably induced Ca 2+ fluorescent increases in all spines. At axonal boutons, G-CaMP6-actin reported action potential trains propagating along axonal collaterals. The detectability of G-CaMP6-actin should contribute toward a deeper understanding of neural network architecture and dynamics at the level of individual synapses.
使用 Nipkow 型共聚焦进行高速多神经元钙成像
DOI: --
发表时间: 2011
期刊:
影响因子: --
作者:
Microscopy Naoya Takahashi;Shigeyuki Oba;Naoto Yukinawa;Sakiko Ujita;N. Matsuki;Shin Ishii;Y. Ikegaya
通讯作者: Y. Ikegaya
DOI: 10.1038/nature10193
发表时间: 2011-07-28
期刊: NATURE
影响因子: 64.8
作者:
Chen, Xiaowei;Leischner, Ulrich;Konnerth, Arthur
通讯作者: Konnerth, Arthur