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Subsurface Imaging of Cell Organelles by Force Microscopy.
ACS Nano ( IF 15.8 ) Pub Date : 2019-07-29 00:00:00 , DOI: 10.1021/acsnano.9b04808
Carlos R Guerrero 1 , Pablo D Garcia 1 , Ricardo Garcia 1
Affiliation  

The development of high-resolution, label-free, noninvasive, and subsurface microscopy methods of living cells remains a formidable problem. Force-microscopy-based stiffness measurements contribute to our understanding of single-cell nanomechanics. The elastic properties of the cell’s outer structures, such as the plasma membrane and actin cytoskeleton, dominate stiffness measurements, which in turns prevents the imaging of intracellular structures. We propose that the above limitation could be overcome by combining 2D sections of the cell’s viscoelastic properties. We show the simultaneous imaging of the outer cell’s cytoskeleton and the organelles inside the nucleus. The elastic component of interaction force carries information on the cell’s outer elements as the cortex and the actin cytoskeleton. The inelastic component is sensitive to the hydrodynamic drag of the inner structures such the nucleoli.

中文翻译:

通过力显微镜对细胞器的亚表面成像。

高分辨率,无标记,无创和亚显微活细胞显微镜方法的发展仍然是一个巨大的问题。基于力显微镜的刚度测量有助于我们对单细胞纳米力学的理解。细胞外部结构(如质膜和肌动蛋白细胞骨架)的弹性特性主导着刚度测量,这反过来又阻止了细胞内结构的成像。我们建议可以通过组合单元的粘弹性特性的2D部分来克服上述限制。我们显示了外部细胞的细胞骨架和细胞核内细胞器的同步成像。相互作用力的弹性成分在细胞的外部元素如皮质和肌动蛋白细胞骨架上传递信息。
更新日期:2019-07-29
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