Imaging and measuring the biophysical properties of Fc gamma receptors on single macrophages using atomic force microscopy | |
Li M(李密); Liu LQ(刘连庆); Wang YC(王越超); Xiao XB(肖秀斌); Zhang WJ(张伟京) | |
刊名 | BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS |
2013 | |
卷号 | 438期号:4页码:709-714 |
关键词 | Atomic Force Microscopy Immunotherapy Antibody Macrophage Fc Gamma Receptor |
ISSN号 | 0006-291X |
产权排序 | 1 |
英文摘要 | Fc gamma receptors (Fc gamma R), widely expressed on effector cells (e.g., NK cells, macrophages), play an important role in clinical cancer immunotherapy. The binding of Fc gamma Rs to the Fc portions of antibodies that are attached to the target cells can activate the antibody-dependent cell-mediated cytotoxicity (ADCC) killing mechanism which leads to the lysis of target cells. In this work, we used atomic force microscopy (AFM) to observe the cellular ultra-structures and measure the biophysical properties (affinity and distribution) of Fc gamma Rs on single macrophages in aqueous environments. AFM imaging was used to obtain the topographies of macrophages, revealing the nanoscale cellular fine structures. For molecular interaction recognition, antibody molecules were attached onto AFM tips via a heterobifunctional polyethylene glycol (PEG) crosslinker. With AFM single-molecule force spectroscopy, the binding affinities of Fc gamma Rs were quantitatively measured on single macrophages. Adhesion force mapping method was used to localize the Fc gamma Rs, revealing the nanoscale distribution of Fc gamma Rs on local areas of macrophages. The experimental results can improve our understanding of Fc gamma Rs on macrophages; the established approach will facilitate further research on physiological activities involved in antibody-based immunotherapy. |
WOS关键词 | ANTI-CD20 MONOCLONAL-ANTIBODIES ; LIVING CELLS ; RITUXIMAB RESISTANCE ; SPECTROSCOPY ; THERAPY ; CANCER ; RECOGNITION ; INFLAMMATION ; MECHANISM ; LYMPHOMA |
WOS研究方向 | Biochemistry & Molecular Biology ; Biophysics |
语种 | 英语 |
WOS记录号 | WOS:000324454800023 |
资助机构 | This work was supported by the National Natural Science Foundation of China (61175103) and CAS FEA International Partnership Program for Creative Research Teams. |
公开日期 | 2013-12-27 |
内容类型 | 期刊论文 |
源URL | [http://ir.sia.cn/handle/173321/14064] |
专题 | 沈阳自动化研究所_机器人学研究室 |
通讯作者 | Liu LQ(刘连庆) |
作者单位 | 1.Department of Lymphoma, Affiliated Hospital of Military Medical Academy of Sciences, Beijing, China 2.Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Hong Kong, China 3.University of Chinese Academy of Sciences, Beijing, China 4.State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, China |
推荐引用方式 GB/T 7714 | Li M,Liu LQ,Wang YC,et al. Imaging and measuring the biophysical properties of Fc gamma receptors on single macrophages using atomic force microscopy[J]. BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS,2013,438(4):709-714. |
APA | Li M,Liu LQ,Wang YC,Xiao XB,&Zhang WJ.(2013).Imaging and measuring the biophysical properties of Fc gamma receptors on single macrophages using atomic force microscopy.BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS,438(4),709-714. |
MLA | Li M,et al."Imaging and measuring the biophysical properties of Fc gamma receptors on single macrophages using atomic force microscopy".BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS 438.4(2013):709-714. |
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