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Immunogold Electron Microscopy01:20

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Immunoelectron microscopy utilizes immunogold labeling of endogenous proteins with specific antibodies to detect and localize these proteins in cells and tissues. The procedure provides insights into the distribution and quantification of protein under different stimulation conditions offering clues about their functions. Conjugating highly electron-dense gold particles with primary or secondary antibodies allow antigen detection on and within cells, with high resolution and specificity.
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Qualitative and Quantitative Analysis of the Immune Synapse in the Human System Using Imaging Flow Cytometry
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定量显微镜用于免疫学中的细胞表面和细胞间相互作用.

Beatriz Díaz-Bello1, Dalia El Arawi1, Rémy Torro1,2

  • 1Aix-Marseille University, CNRS, INSERM, LAI, Turing Center for Living Systems, Marseille, France.

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概括

这项研究引入了新的光学显微镜测试,用于分析自然杀手 (NK) 细胞与癌细胞和癌细胞表面的相互作用. 这些方法可以精确量化细胞对细胞的细胞毒性和受体-连接体动态,用于免疫治疗研究.

关键词:
ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC ADCC is also known as ADCC ADCC ADCC is also known as ADCC细胞扩散 细胞扩散光显微镜的光学显微镜.图像分析软件 图像分析软件免疫治疗是一种免疫疗法.在RICM中,RICM是RICM.单细胞动力学 单细胞动力学时间间隔显微镜.

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科学领域:

  • * 免疫学 免疫学
  • * 细胞生物学 * 细胞生物学
  • * 光学显微镜技术

背景情况:

  • * 细胞表面和细胞之间的相互作用对于理解受体-连接体动力学,免疫反应以及癌症免疫疗法等治疗应用至关重要.
  • *传统方法通常依赖于集体测量或间接读数,限制了细胞行为的详细分析.
  • *光学显微镜提供了直接的,时间延迟的细胞水平观测,比集体或间接技术提供了优势.

研究的目的:

  • *描述两个互补的基于显微镜的测试,用于评估自然杀手 (NK) 细胞相互作用.
  • * 量化初级NK细胞与癌症模拟表面之间的动态细胞表面连接键的量化.
  • * 用先进的成像和分析来评估NK细胞和瘤细胞之间的抗体依赖细胞介导细胞毒性 (ADCC).

主要方法:

  • * 开发使用无标签成像进行细胞表面连接剂结合测定,以研究NK细胞在抗体涂层表面的扩散.
  • *通过光成像和基于深度学习的死亡检测来评估ADCC的细胞细胞相互作用测试的实施.
  • *利用Celldetective,一个开源的GUI,从二维时隔显微镜数据中对细胞相互作用动态进行定量分析.

主要成果:

  • * 能够对动态NK细胞在不同抗体度的抗体涂层表面上扩散进行定量分析.
  • *提供NK细胞介导的ADCC对瘤细胞的高分辨率评估.
  • *在单细胞分辨率下促进了细胞形态,运动和相互作用的直接观察和量化.

结论:

  • * 描述的显微镜测试为研究免疫学及其他领域的细胞相互作用提供了一种强大,可适应的方法.
  • *这些方法与开源软件相结合,便于对免疫细胞功能进行详细的机制分析,包括细胞毒性和突触形成.
  • *该协议支持抗体评估和治疗开发,特别是在癌症免疫治疗中,通过提供精确的,对细胞动态的定量见解.