文献类型：期刊文献

英文题名：Probing the Membrane Vibration of Single Living Cells by Using Nanopipettes

作者：Chen, Bin-Bin[1,2];Lv, Jian[1,2];Wang, Xiao-Yuan[1,2];Qian, Ruo-Can[1,2]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2020

卷号：21

期号：5

起止页码：650

外文期刊名：CHEMBIOCHEM

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000496511400001)】；

基金：This research was supported by the National Natural Science Foundation of China (21605048), the National Science and Technology Major Project of China (2018ZX10302205), the Natural Science Foundation of Shanghai (19ZR1472300), and the Chenguang Program (16CG35).

语种：英文

外文关键词：bioanalysis; membranes; nanopipettes; scanning probe microscopy; single-cell analysis

摘要：The vibration of a cell membrane plays a key role in the regulation of cell shape and the behavior of cells. However, most existing approaches for the measurement of cell vibration require either exogenous modification or sophisticated techniques, and the main challenge lies in developing methods that can monitor membrane vibration of living cells directly. Herein, a noninvasive strategy based on ultrasmall quartz nanopipettes is introduced. With a tip size of less than 100 nm, nanopipettes can be spatially controlled for precision targeting of a specific location on the membrane of single living cells. Surprisingly, by employing a constant voltage, stable cyclic oscillations are observed from the continuous current versus time traces. The time-domain current can be decomposed into two basic waves: the high-frequency one indicates the local membrane vibration driven by the electro-osmotic flow from the nanopipette, whereas the low-frequency one indicates the natural frequency of the whole cell. This provides a simple but reliable method to test local and global membrane vibration of single living cells simultaneously with little damage, which provides a tool for the quantification of drugs, disease, or mutations of the cell structure.