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阴离子交换蛋白阻滞剂DIDS对人视网膜色素上皮细胞非特异性吞噬过程的影响

郑雅娟1,辛 华2,刘赤兵3,韩秀清1,张文松1   

  1. 1. 吉林大学第二医院眼科,吉林 长春130041;2. 吉林大学中日联谊医院胸外科,吉林 长春130033;3. 吉林大学第二医院门诊部,吉林 长春130041
  • 收稿日期:2005-11-29 修回日期:1900-01-01 出版日期:2006-09-28 发布日期:2006-09-28

Effect of anion exchange blocker DIDS on nonspecific phagocyticprocess of human retinal pigment epithelial cells

ZHENG Ya-juan1, XIN Hua2,LIU Chi-bing3, HAN Xiu-qing1,ZHANG Wen-song1    

  1. 1. Department of Ophthalmology, Second Hospital, Jilin University, Changchun 130041, China;2. Department of Thoracic Surgery, China-Japan Union Hospital, Jilin University, Changchun 130033, China;3. Department of Out-patient, Second Hospital, Jilin University, Changchun 130041, China
  • Received:2005-11-29 Revised:1900-01-01 Online:2006-09-28 Published:2006-09-28

摘要: 目的:探讨阴离子交换蛋白在人视网膜色素上皮(RPE)细胞非特异性吞噬过程中的作用。方法:体外培养人RPE细胞,以荧光包被的乳胶株作为吞噬标记物,建立RPE细胞吞噬模型。使用不同浓度阴离子交换蛋白阻滞剂DIDS(1、10、100、200、300、500和1 000 μmol•L-1)预处理RPE细胞,37℃孵育6 h,利用流式细胞术定量检测RPE细胞对乳胶珠的吞噬指数。结果:经6 h孵育,未加DIDS的对照组RPE细胞对乳胶株的吞噬指数为(35.1±1.6)%,加入1 μmol•L-1 DIDS的RPE细胞吞噬指数为(34.1±2.1)%(P>0.05),加入10μmol•L-1 DIDS的RPE细胞吞噬指数为(28.7±1.9)%,10 μmol•L-1的DIDS显著地抑制了RPE细胞对乳胶株的吞噬作用(P<0.05),并且随着DIDS浓度的增加(100、200、300、500及1 000 μmol•L-1),RPE细胞吞噬指数逐渐降低[吞噬指数分别为(23.0±1.2)%、(17.0±1.5)%、(12.0±1.6)%、(7.0±2.2%)及(5.0±2.5)%],与对照组比较差异均有显著性(P<0.01)。结论:抑制阴离子交换蛋白的活性将导致人RPE细胞非特异性吞噬功能的障碍,阴离子交换蛋白可能参与人RPE细胞的非特异性吞噬过程。

关键词: 眼, 吞噬作用, 氯化重碳酸反向转运物

Abstract: Objective To investigate the role of anion exchange in nonspecific phagocytic process of human retinal pigment epithelial (RPE) cells. Methods Fluorescent latex beads were incubated with RPE cells at 37℃, flow cytometry was performed on RPE cells that had been challenged with fluorescent latex beads. The quantity of phagocytosis was expressed as a phagocytic index. Experiments were also performed in the presence of different concentration anion exchange blocker DIDS(1,10,100,200,300,500 and 1 000 μmol•L-1).Results Phagocyticindex of RPE cells was (35.1±1.6)% at 6 h of incubation without DIDS. Phagocytic index of RPE cells was (34.1±2.1)% in the presence of 1 μmol•L-1 DIDS(P>0.05). Phagocytic index of RPE cells was (28.7±1.9)% in the presence of 10 μmol•L-1 DIDS,10μmol•L-1 DIDS significantly inhibited the nonspecific phagocytic process of human RPE cells(P<0.05), and DIDS inhibited the process in concentration-dependent manner. Phagocytic index of RPE cells was (23.0±1.2)%,(17.9±1.5)%,(12.0±1.6)%,(7.0±2.2)% and (5.0±2.5)% in the presence of 100,200,300,500 and 1 000 μmol•L-1 DIDS (P<0.01).Conclusion The inhibition of anion exchange activity will result in the decrease of nonspecific phagocytosis in RPE cells, anion exchange maybe participate in the nonspecific phagocytic process of RPE cells.

Key words: phagocytosis, chloride-bicarbonate antiporters

中图分类号: 

  • R967