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High-speed tracking of intracellular structures: understanding the transport mechanisms in living plant cells

机译:高速跟踪细胞内结构:了解活植物细胞中的转运机制

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摘要

Zera~® technology offers the possibility to artificially induce the formation of spherical organelles in different kinds of cells. Their large size and high density, compared to the native organelles of the cell, make them good candidates to be used as a handles for the realization of biophysical experiments inside living cells. Furthermore, they present a h igh signal-to-noise ratio in fluore scence microscopy and small photobleaching. This work focuses mainly on the nature of protein body motion in Nicotiana Benthamiana (tobacco) cells. The high-speed tracking of these structures reveals that they move in a stepwise mode, suggesting that myosin XI motors directly pull these organelles through the cytosol. Our results indicate that these artificially-induced structures are well integrated into the natural processes of the cell so that the technique may be advantageous for the study of the intracellular transport mechanisms. Large forces can be exerted with optical tweezers to mechanically interact with the moving organelles.
机译:Zera®技术提供了在不同类型的细胞中人工诱导球形细胞器形成的可能性。与细胞的天然细胞器相比,它们的大尺寸和高密度使其成为在活细胞内部实现生物物理实验的良好选择。此外,它们在荧光显微镜和少量光漂白中表现出较高的信噪比。这项工作主要侧重于烟草(烟草)中蛋白质身体运动的性质。对这些结构的高速跟踪显示它们以步进模式移动,这表明肌球蛋白XI电机直接将这些细胞器拉过细胞质。我们的结果表明,这些人工诱导的结构已很好地整合到细胞的自然过程中,因此该技术可能对研究细胞内转运机制具有优势。可以用光镊施加较大的力,使其与移动的细胞器机械相互作用。

著录项

  • 来源
    《Optical trapping and optical micromanipulation VIII》|2011年|p.80970G.1-80970G.11|共11页
  • 会议地点 San Diego CA(US)
  • 作者单位

    Optical Trapping Lab-Grup de Biofotonica, Departament de Fisica Aplicada i Optica, Universitat de Barcelona, Barcelona, 08028, Spain;

    Centre de Recerca en Agrigenomica- CSIC-IRTA (CRAG), Departament de Genetica Molecular, Barcelona, 08034, Spain;

    Departament de Biologia Cel lular, Immunologia i Neurociencies, Facultat de Medicina, Institut de Nanociencia i Nanotecnologia (IN2UB) and Institut d'Investigacions Biomediques Agusti Pi i Sunyer (IDIBAPS), Barcelona, 08036, Spain;

    Optical Trapping Lab-Grup de Biofotonica, Departament de Fisica Aplicada i Optica, Universitat de Barcelona, Barcelona, 08028, Spain;

    Departament de Biologia Cel lular, Immunologia i Neurociencies, Facultat de Medicina, Institut de Nanociencia i Nanotecnologia (IN2UB) and Institut d'Investigacions Biomediques Agusti Pi i Sunyer (IDIBAPS), Barcelona, 08036, Spain;

    Centre de Recerca en Agrigenomica- CSIC-IRTA (CRAG), Departament de Genetica Molecular, Barcelona, 08034, Spain;

    Optical Trapping Lab-Grup de Biofotonica, Departament de Fisica Aplicada i Optica, Universitat de Barcelona, Barcelona, 08028, Spain;

    Optical Trapping Lab-Grup de Biofotonica, Departament de Fisica Aplicada i Optica, Universitat de Barcelona, Barcelona, 08028, Spain;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 光学;
  • 关键词

    optical trapping; step-detection; molecular motors; protein bodies; myosin XI; living cells;

    机译:光学陷阱步检测分子马达蛋白质体肌球蛋白十一;活细胞;

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