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The influence of aminophylline on the nanostructure and nanomechanics of T lymphocytes: an AFM study
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  • 作者:Xun Huang (11) (12)
    Jiexiang He (11) (12)
    Mingxian Liu (11) (12)
    Changren Zhou (11) (12)

    11. Department of Materials Science and Engineering
    ; Jinan University ; Guangzhou ; 510630 ; China
    12. Engineering Research Center of Artificial Organs and Materials
    ; Ministry of Education ; Guangzhou ; 510630 ; China
  • 关键词:Atomic force microscopy ; T lymphocytes ; Aminophylline ; Nanostructure ; Nanomechanics
  • 刊名:Nanoscale Research Letters
  • 出版年:2014
  • 出版时间:December 2014
  • 年:2014
  • 卷:9
  • 期:1
  • 全文大小:1,476 KB
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  • 刊物主题:Nanotechnology; Nanotechnology and Microengineering; Nanoscale Science and Technology; Nanochemistry; Molecular Medicine;
  • 出版者:Springer US
  • ISSN:1556-276X
文摘
Although much progress has been made in the illustration of the mechanism of aminophylline (AM) treating asthma, there is no data about its effect on the nanostructure and nanomechanics of T lymphocytes. Here, we presented atomic force spectroscopy (AFM)-based investigations at the nanoscale level to address the above fundamental biophysical questions. As increasing AM treatment time, T lymphocytes' volume nearly double increased and then decreased. The changes of nanostructural features of the cell membrane, i.e., mean height of particles, root-mean-square roughness (Rq), crack and fragment appearance, increased with AM treatment time. T lymphocytes were completely destroyed with 96-h treatment, and they existed in the form of small fragments. Analysis of force-distance curves showed that the adhesion force of cell surface decreased significantly with the increase of AM treatment time, while the cell stiffness increased firstly and then decreased. These changes were closely correlated to the characteristics and process of cell oncosis. In total, these quantitative and qualitative changes of T lymphocytes' structure and nanomechanical properties suggested that AM could induce T lymphocyte oncosis to exert anti-inflammatory effects for treating asthma. These findings provide new insights into the T lymphocyte oncosis and the anti-inflammatory mechanism and immune regulation actions of AM.

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