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中国临床药理学与治疗学 ›› 2005, Vol. 10 ›› Issue (11): 1257-1265.

• 研究原著 • 上一篇    下一篇

大鼠肺泡 、腹腔巨噬细胞甘露糖受体与配体的亲和力比较

吕正光, 刘莉, 梅其炳, 曹尉, 王志鹏, 刘新友, 余璐   

  1. 第四军医大学药学系药理教研室,西安 710032,陕西
  • 收稿日期:2005-09-14 修回日期:2005-10-26 出版日期:2005-11-26 发布日期:2020-11-12
  • 通讯作者: 梅其炳, 男, 教授, 博士生导师, 研究方向:分子药理, 中药药理。Tel:029-83374552 E-mail:qbmei@fmmu.edu.cn
  • 基金资助:
    国家自然科学基金资助项目(No30300450)

Comparison of affinity of mannose receptorof peritoneal macrophage and alveolarmacrophage and its ligands in rats

LV Zheng-guang, LIU Li, MEI Qi-bing, CAO Wei, WANG Zhi-peng, LIU Xin-you, YU Lu   

  1. Department of Pharmacology,the Fourth Military Medical University,Xi' an 710032,Shanxi,China
  • Received:2005-09-14 Revised:2005-10-26 Online:2005-11-26 Published:2020-11-12

摘要: 目的: 探讨来源于不同组织肺泡、腹腔巨噬细胞甘露糖受体(macrophagemannosereceptor,MMR)与配体的亲和力差异。方法: 采用支气管肺泡灌洗和腹腔冲洗法获得肺泡和腹腔巨噬细胞(macrophage,Mφ),经纯化、鉴定后与异硫氰酸荧光标记的甘露糖基化牛血清白蛋白(M-FITC-BSA)孵育20min,分别加入D-甘露糖、D-半乳糖、EDTA,采用荧光显微镜和流式细胞仪检测甘露糖受体(mannosereceptor,MR)与配体的结合情况。结果: Mφ上存在MR,MR与配体的结合属于Ca2+依赖性,其结合可被D-甘露糖、EDTA抑制,而不受D-半乳糖的抑制;腹腔MMR与配体的亲和力高于肺泡MMR。结论: 腹腔MMR与配体的亲和力高于肺泡MMR。

关键词: 巨噬细胞, 甘露糖受体, 配体, 多糖, 药物导向

Abstract: AIM: To evaluate the affinity of the man-nose receptorof peritoneal macrophage and pulmonary macrophage and theirligands.METHODS: Two kinds of macrophage were acquired through Irrigation of peritoneal cavity and bronchoalveolarlavage(BAL).Afterpurifica-tion and identification,macrophage were incubated with fluorescent isothiocyanate(FITC)-labeled mannosylated albumin(M-FITC-BSA,Sigma A7790)for20 minites,the affinity of Mrand its ligands are measured by flow cytometry(FCM)and fluorescene microscope.RESULTS: There existed Mrin macrophage.The binding of Mrand its ligandswas calcium dependent,which was inhibited by the existence of D-mannose and EDTA,but not by D-galactose.The affinity of peritoneal macrophage Mrand its ligands were greaterthan that of the pulmo-nary macrophage Mrand its ligands.CONCLUSION: The affinity of peritoneal macrophage Mrand its ligands are greaterthan that of the pulmonary macrophage Mrand its ligands.

Key words: macrophages, mannose receptor, li-gands, polysaccharides, drug targeting

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