高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (7): 857.

• 论文 • 上一篇    下一篇

顺-二氯二氨合铂(Ⅱ)与红细胞膜蛋白的相互作用

陈宝卫, 王夔   

  1. 北京医科大学药学院, 天然药物及仿生药物国家重点实验室, 北京, 100083
  • 收稿日期:1990-05-22 出版日期:1991-07-24 发布日期:1991-07-24
  • 通讯作者: 陈宝卫
  • 基金资助:

    国家自然科学基金

The Interaction of cis-Dichlorodiammineplatinum(Ⅱ) with Proteins of Erythrocyte Membranes

Chen Bao-wei, Wang Kui   

  1. College of Pharmacy, Beijing Medical University, Beijing, 100083
  • Received:1990-05-22 Online:1991-07-24 Published:1991-07-24

摘要: 顺铂可与红细胞膜蛋白结合,并使膜收缩蛋白交联聚合,巯基是顺铂的可能结合部位,顺铂造成膜蛋白构象或在膜内组装的改变,这些结果支持了我们提出的顺铂作用的多靶分子模型。

关键词: 顺铂, 红细胞, 膜蛋白

Abstract: The interaction of DDPwith proteins of erythrocyte membrane was studied. When DDPwas incubated with membranes for 24 h at 37℃, the bound DDPcontent per mg membrane proteins was 0. 11 μmol. The distribution and polymeric form of membrane proteins were investigated by SDS-PAGE method, DDP made band 1,2(spectrin) polymerize. The distribution of DDPon membrane proteins was determined by flameless atomic absorption spectroscopy, all the membrane proteins bind with DDP. It was observed that DDP decreased the sulfhydryl content of membranes. Sulfhydryl groups are one of binding sites for DDP. DDP can cause change of S/W in ESRspectrum of maleimide labeled erythrocyte membranes. This indicates that DDP affects the conformation of membrane proteins. These phenomena support our postulation that membrane proteins are the target of DDPin cell membranes.

Key words: cis-Dichlorodiammineplatinum, Erythrocyte, Membrane-protein

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