Transfection via whole-cell recording in vivo: bridging single-cell physiology, genetics and connectomics.

Transfection via whole-cell recording in vivo: bridging single-cell physiology, genetics and connectomics.
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DOI:
10.1038/nn.2765
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发表时间:
2011-04
影响因子:
25
通讯作者:
Margrie, Troy W.
Margrie, Troy W.
中科院分区:
医学1区
文献类型:
--
作者:
Rancz, Ede A.;Franks, Kevin M.;Schwarz, Martin K.;Pichler, Bruno;Schaefer, Andreas T.;Margrie, Troy W.

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单细胞遗传操作有望显著推进系统神经科学领域。然而,现有的基因传递技术不允许对细胞进行电生理表征,从而在生理学和遗传学之间建立实验联系,以了解神经元功能。在这里,我们在小鼠大脑中证明(i)神经元在“盲”全细胞记录后保持完整,(ii) DNA载体可以在记录期间通过膜片移液器传递,(iii)这些载体在记录的细胞中驱动蛋白质表达至少7天。我们通过记录初级视觉皮质细胞的视觉诱发突触反应来说明这种方法的实用性,同时传递DNA质粒,允许对神经元的突触前输入进行逆行的单突触追踪。通过提供细胞在其特定遗传扰动之前的生物物理概况,这种组合方法已经捕获了神经元的第一个突触和解剖感受野。
Single cell genetic manipulation is expected to significantly advance the field of systems neuroscience. However, existing gene delivery techniques do not permit electrophysiological characterization of cells that would establish an experimental link between physiology and genetics for understanding neuronal function. Here we demonstrate in the mouse brain in vivo that (i) neurons remain intact after ‘blind’ whole-cell recording, (ii) that DNA vectors can be delivered through the patch-pipette during such recordings and (iii) that these vectors drive protein expression in recorded cells for at least seven days. We illustrate the utility of this approach by recording visually-evoked synaptic responses of primary visual cortical cells while delivering DNA plasmids that permit retrograde, mono-synaptic tracing of that neuron’s presynaptic inputs. By providing a biophysical profile of the cell prior to its specific genetic perturbation, this combinatorial method has captured the first synaptic and anatomical receptive field of a neuron.
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