Simultaneous Measurement of Multiple Mechanical Properties of Single Cells Using AFM by Indentation and Vibration

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	Simultaneous Measurement of Multiple Mechanical Properties of Single Cells Using AFM by Indentation and Vibration
	Zhang C(张闯); Shi JL(施佳林); Wang WX(王文学); Xi N(席宁); Wang YC(王越超); Liu LQ(刘连庆)
刊名	IEEE Transactions on Biomedical Engineering
	2017
页码	1-11
关键词	Atomic force microscope (AFM) Cellular biophysics Cellular mechanical property Indentation Vibrations Viscoelasticity
ISSN号	0018-9294
通讯作者	王文学 ; 刘连庆
产权排序	1
中文摘要	Objective: The mechanical properties of cells, which are the main characteristics determining their physical performance and physiological functions, have been actively studied in the fields of cytobiology and biomedical engineering and for the development of medicines. In this study, an indentation-vibration-based method is proposed to simultaneously measure the mechanical properties of cells in situ, including cellular mass (m), elasticity (k) and viscosity (c). Methods: The proposed measurement method is implemented based on the principle of forced vibration stimulated by simple harmonic force using an atomic force microscope (AFM) system integrated with a piezoelectric transducer (PZT) as the substrate vibrator. The corresponding theoretical model containing the three mechanical properties is derived and used to perform simulations and calculations. Living and fixed human embryonic kidney 293 (HEK 293) cells were subjected to indentation and vibration to measure and compare their mechanical parameters and verify the proposed approach. Results: The results that the fixed sample cells are more viscous and elastic than the living sample cells and the measured mechanical properties of cell are consistent within, but not outside of the central region of the cell, are in accordance with previous studies. Conclusion: This work provides an approach to simultaneous measurement of the multiple mechanical properties of single cells using an integrated AFM system based on the principle force vibration and thickness-corrected Hertz model. Significance: This work should contribute to progress in biomedical engineering, cytobiology, medicine, early diagnosis, specific therapy and cell-powered robots.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sia.cn/handle/173321/20238]
专题	沈阳自动化研究所_机器人学研究室
推荐引用方式 GB/T 7714	Zhang C,Shi JL,Wang WX,et al. Simultaneous Measurement of Multiple Mechanical Properties of Single Cells Using AFM by Indentation and Vibration[J]. IEEE Transactions on Biomedical Engineering,2017:1-11.
APA	Zhang C,Shi JL,Wang WX,Xi N,Wang YC,&Liu LQ.(2017).Simultaneous Measurement of Multiple Mechanical Properties of Single Cells Using AFM by Indentation and Vibration.IEEE Transactions on Biomedical Engineering,1-11.
MLA	Zhang C,et al."Simultaneous Measurement of Multiple Mechanical Properties of Single Cells Using AFM by Indentation and Vibration".IEEE Transactions on Biomedical Engineering (2017):1-11.