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人舌鳞癌组织超薄切片的AFM成像和切割
引用本文:李鑫辉,季彤,张晓东,张陈平,孙洁林,胡钧.人舌鳞癌组织超薄切片的AFM成像和切割[J].电子显微学报,2003,22(2):110-115.
作者姓名:李鑫辉  季彤  张晓东  张陈平  孙洁林  胡钧
作者单位:1. 上海交通大学Bio-X生命科学研究中心纳米生物学实验室,上海,200030
2. 上海第二医科大学附属第九人民医院,上海,200011
3. 上海交通大学Bio-X生命科学研究中心纳米生物学实验室,上海,200030;中国科学院上海原子核研究所,上海,201800
基金项目:上海交通大学基金,上海第二医科大学基金 (No .8110 60 42 2 ),上海市科技发展基金纳米专项 ( 0 15 8nm0 78)
摘    要:利用一种基于电镜超薄切片法改进的制样方法,将人舌鳞状细胞癌病理组织以环氧树脂包埋并切片后,将薄片平整地贴附在云母上,用原子力显微镜(AFM)对切片表面进行研究,可以得到高分辨率的细胞超微结构图像,局部的亚细胞水平的形态结构可以与电镜下得到的图像相比拟。在此基础上,利用AFM针尖对肿瘤细胞核内特定区域进行切割和操纵,形成生物分子的堆积,从而为拾取(pjck—up)和进一步用分子生物学手段在亚细胞基因水平研究人舌鳞癌的病理学奠定了基础。

关 键 词:原子力显微镜  亚细胞  超薄切片  人舌鳞癌组织  显微机构  分辨率
文章编号:1000-6281(2003)02-0110-06

Imaging and dissecting of ultrathin sections of human ligual squamous carcinoma tissue by AFM
LI Xin-hui ,JI Tong ,ZHANG Xiao-dong ,ZHANG Chen-ping ,SUN Jie-lin ,HU Jun ,.Imaging and dissecting of ultrathin sections of human ligual squamous carcinoma tissue by AFM[J].Journal of Chinese Electron Microscopy Society,2003,22(2):110-115.
Authors:LI Xin-hui  JI Tong  ZHANG Xiao-dong  ZHANG Chen-ping  SUN Jie-lin  HU Jun  
Affiliation:LI Xin-hui 1,JI Tong 2,ZHANG Xiao-dong 1,ZHANG Chen-ping 2,SUN Jie-lin 1,HU Jun 1,3,*
Abstract:The ultrathin tissue sections of human ligual squamous carcinoma cells were embedded in epoxy resin and observed with atomic force microscopy (AFM) by a new sample preparation method. Topography of single cells and subcellular structures of pathological tissue section were obtained with high spatial resolution. Some features in those AFM images were revealed comparable to that obtained with transmission electron microscopy(TEM). Biological materials can be accumulated after dissection and manipulation by a tip of AFM on the special area in the nuclear of cancer cell.
Keywords:atomic force microscopy  subcellular level  ultrathin sections  dissection
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