华西口腔医学杂志

• 基础研究 • 上一篇    下一篇

体外培养破骨细胞游离钙离子分布特点

包向军1;梁星2;陈明2;王航2;宋宏杰2;朱保民2   

  1. 1.上海市口腔病防治院,上海 200001;2.四川大学华西口腔医院  修复科,四川  成都 610041
  • 收稿日期:2006-02-25 修回日期:2006-02-25 出版日期:2006-02-20 发布日期:2006-02-20
  • 通讯作者: 梁 星,Tel:028-85503570
  • 作者简介:包向军(1970-),男,辽宁人,主治医师,博士
  • 基金资助:

    国家自然科学基金资助项目(30271428);教育部“优秀青年教师资助计划”资助项目(教人司[2002]40号)

Characteristics of Free Ca2+ Distribution in Cultured Osteoclast-like Cells

 BAO Xiang-jun1, LIANG Xing2, CHEN Ming2, WANG Hang2, SONG Hong-jie2, ZHU Bao-min2   

  1. 1. Shanghai Hospital of Oral Diseases Prevention,Shanghai 200001, China; 2. Dept. of Prosthetics, West China College of Stomatology, Sichuan University, Chengdu  610041, China
  • Received:2006-02-25 Revised:2006-02-25 Online:2006-02-20 Published:2006-02-20

摘要:

目的  研究培养于载玻片上的破骨细胞内Ca2+的空间分布情况。方法  体外培养获得破骨细胞,采用抗酒石酸酸性磷酸酶染色和扫描电镜观察骨吸收情况鉴定破骨细胞;应用激光扫描共聚焦显微镜和Fluo-3/AM荧光探针标记技术,测定了破骨细胞胞内游离Ca2+的分布,获得的图像在计算机内用图像分析软件分析。结果  在37  ℃、Fluo-3/AM终浓度为10 μmol/L的条件下,破骨细胞可获得良好的标记效果,破骨细胞中部层面内Ca2+荧光信号的强度较高,同一层面内分布是不均匀的。结论  破骨细胞的不同位置的细胞器内或其附近的Ca2+浓度不同,破骨细胞可通过Ca2+浓度的空间差异来调节其自身功能。

关键词: 破骨细胞, 激光扫描共聚焦显微镜,

Abstract:

Objective  To study the spatial distribution of free Ca2+ in osteoclast-like cells cultured on glass. Methods  To detect the free Ca2+ in osteoclast-like cells, the images were analyzed with image software, using the laser scanning confocal microscope and fluorescent probe. Results  At 37 ℃ the free Ca2+ in osteoclast-like cells could be labelled effectively with 10 μmol/L Fluo-3/AM, the intensity of Ca2+ fluorescent signal in the central part was greater than that in the peripheral part and in the same section the signal was not distributed evenly. Conclusion  The intensity of Ca2+ fluorescent signal is different among various organellae in osteoclast-like cell, which suggests the osteoclast-like cell modulate its own function through the spatial difference of free Ca2+ concentration.

Key words: osteoclast, confocalmicroscope, calcium