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Chemistry
偏振敏感双光子显微镜用于无标记淀粉样蛋白结构表征
偏振敏感双光子显微镜用于无标记淀粉样蛋白结构表征
JoVE Journal
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JoVE Journal Chemistry
Polarization-Sensitive Two-Photon Microscopy for a Label-Free Amyloid Structural Characterization

偏振敏感双光子显微镜用于无标记淀粉样蛋白结构表征

Full Text
1,945 Views
05:54 min
September 8, 2023

DOI: 10.3791/65670-v

Maciej Lipok1, Patryk Obstarczyk1, Joanna Olesiak-Bańska1

1Institute of Advanced Materials,Wrocław University of Science and Technology

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Please note that some of the translations on this page are AI generated. Click here for the English version.

本文描述了如何应用偏振敏感双光子显微镜来表征无标记淀粉样蛋白超结构-球晶中的局部组织。它还描述了如何制备和测量样品、组装所需的设置以及分析数据以获取有关淀粉样蛋白原纤维局部组织的信息。

我们的目标是开发新的光学标记物和技术,用于检测称为淀粉样蛋白的蛋白质聚集体。他们涉及一系列疾病,如阿尔茨海默病和二型糖尿病。因此,为了治愈这些疾病,我们需要有可视化淀粉样蛋白的技术。

我们证明了双光子显微镜可用于检测淀粉样蛋白超结构内的淀粉样原纤维取向。它不仅可以使用淀粉样蛋白特异性染料来实现,还可以通过利用淀粉样蛋白的自发荧光来实现。由于我们的技术适用于非线性光学现象,因此与单光子荧光显微技术相比,它可以实现减少角度光选择、增强轴向分辨率、降低光散射、降低光毒性和更深的样品穿透力。

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偏振敏感 双光子显微镜 无标记 淀粉样蛋白结构表征 生物成像实验 光毒性 组织渗透 致密堆积系统 角光选择 荧光团 偏振分析 双光子荧光显微镜 (2PFM) 分子组织 标准成像方法 线性光学过程 偏振敏感 2PFM (ps-2PFM) 分子排序 复杂生物结构 淀粉样蛋白球晶 神经退行性疾病 阿尔茨海默氏症 帕金森氏症 淀粉样蛋白聚集体 受损的蛋白质错误折叠过程 诊断方法 局部原纤维排序 牛胰岛素球体

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