A waveguide imaging platform for live-cell TIRF imaging of neurons over large fields of view

A waveguide imaging platform for live-cell TIRF imaging of neurons over large fields of view
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用于大视场神经元活细胞 TIRF 成像的波导成像平台

DOI:
10.1101/2019.12.13.874545
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发表时间:
2019
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通讯作者:
Opstad I
Opstad I
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作者:
Opstad I

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通过波导的全内反射荧光显微镜(TIRFM)中的大视场(FOV)已被证明对固定细胞上的单分子定位显微镜非常有益[1,2],并且还被证明用于稳健细胞类型的短期实时成像[3 - 5],但尚未用于精细的原代神经元,也没有延长时间。在这里,我们提出了一种基于波导的TIRFM设置,用于对要求苛刻的样品进行活细胞成像。使用开发的显微镜,称为芯片,我们证明成功的培养和成像的成纤维细胞,原代大鼠海马神经元和轴突的异种视网膜神经节细胞(RGCs)。由TIRFM提供的高对比度和温和的照明模式与由光子波导提供的异常大的激发区域和上级照明均匀性相结合,在神经科学应用中具有广泛的应用范围。
Large fields of view (FOVs) in total internal reflection fluorescence microscopy (TIRFM) via waveguides have been shown to be highly beneficial for single molecule localisation microscopy on fixed cells [1,2] and have also been demonstrated for short‐term live‐imaging of robust cell types [3‐5], but not yet for delicate primary neurons nor over extended periods of time. Here, we present a waveguide‐based TIRFM set‐up for live‐cell imaging of demanding samples. Using the developed microscope, referred to asthe ChipScope, we demonstrate successful culturing and imaging of fibroblasts, primary rat hippocampal neurons and axons ofXenopusretinal ganglion cells (RGCs). The high contrast and gentle illumination mode provided by TIRFM coupled with the exceptionally large excitation areas and superior illumination homogeneity offered by photonic waveguides have potential for a wide application span in neuroscience applications.
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