Division of Microscopic Anatomy, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan; Division of Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan.
Division of Microscopic Anatomy, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan.
Semin Cell Dev Biol. 2018 Jan;73:125-131. doi: 10.1016/j.semcdb.2017.09.024. Epub 2017 Oct 5.
Scanning ion conductance microscopy (SICM), which belongs to the family of scanning probe microscopy, regulates the tip-sample distance by monitoring the ion current through the use of an electrolyte-filled nanopipette as the probing tip. Thus, SICM enables "contact-free" imaging of cell surface topography in liquid conditions. In this paper, we applied hopping mode SICM for obtaining topographical images of convoluted tissue samples such as trachea and kidney in phosphate buffered saline. Some of the SICM images were compared with the images obtained by scanning electron microscopy (SEM) after drying the same samples. We showed that the imaging quality of hopping mode SICM was excellent enough for investigating the three-dimensional surface structure of the soft tissue samples. Thus, SICM is expected to be used for imaging a wide variety of cells and tissues - either fixed or alive- at high resolution under physiologically relevant liquid conditions.
扫描离子电导显微镜(SICM)属于扫描探针显微镜家族,通过使用充满电解质的纳米管作为探测尖端来监测离子电流,从而调节尖端-样品的距离。因此,SICM 能够在液体条件下实现“非接触式”细胞表面形貌成像。在本文中,我们应用跳跃模式 SICM 获得了气管和肾脏等卷曲组织样本在磷酸盐缓冲盐溶液中的形貌图像。一些 SICM 图像与对相同样本干燥后获得的扫描电子显微镜(SEM)图像进行了比较。我们表明,跳跃模式 SICM 的成像质量足以用于研究软组织样本的三维表面结构。因此,SICM 有望用于在生理相关的液体条件下以高分辨率对各种固定或活细胞和组织进行成像。