高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (6): 866.

• 论文 • 上一篇    下一篇

各种离子对血卟啉与牛血清白蛋白相互结合反应的影响研究

冯喜增, 金瑞祥, 曲芸, 何锡文   

  1. 南开大学化学系, 天津 300071
  • 收稿日期:1995-06-06 出版日期:1996-06-24 发布日期:1996-06-24
  • 通讯作者: 何锡文
  • 作者简介:冯喜增,男,32岁,博士研究生.
  • 基金资助:

    国家自然科学基金

Studies on the Ions' Effect on the Binding Interaction Between HP and BSA

FENG Xi-Zeng, JIN Rui-Xiang, QU Yun, HE Xi-Wen   

  1. Department of Chemistry, Nankai University, Tianjin 300071
  • Received:1995-06-06 Online:1996-06-24 Published:1996-06-24

摘要: 应用荧光法研究了水溶液体系中血卟啉与牛血清白蛋白分子间相互结合反应,其结合常数KA=2.2×104,结合位置数为1.依据Förster非辐射能量转移机理,探讨了血卟琳与牛血清白蛋白相互结合时,其给体-受体间距离和能量转移效率,进一步研究了各种离子与牛血清白蛋白的结合反应,其结合猝灭能力大小顺序为Cr(Ⅵ)>Fe3+>Cu2+>NO2->Br-.并探讨不同阴、阳离子及血卟啉与牛血清白蛋白间相互竞争结合反应,阐明了阴、阳离子在肿瘤光化学治疗中,可能对光敏剂在体内的转运、吸收等方面的影响。

关键词: 牛血清白蛋白, 血卟啉, 结合反应

Abstract: We studied the binding interaction between hematoporphyrin(HP) and bovineserum albumin (BSA) in solution with flourescence method.The binding constant is KA 2.2×104 and the number of binding site is 1.With the Forster non-radio energy transfer theory,we calculated the distance beween energy donor and receptor as well as the energy transferefficiency in the binding reaction.Furthermore, we studied the interaction between severalions(cations and anions) and BSA.The order of quenching ability of these ions is; Cr(Ⅵ)>Fe3+>Cu2+>NO2->Br-,and the competing reaction for BSA between the ions and HPisdiscussed.We tried to illustrate the possible effect of the ions on the transfer and absorptionof HPin the process of cancer photochemical treatment.

Key words: Bovine serum albumin, Hematoporphyrin, Energy transfer, Binding interaction

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