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• 基础研究 • 上一篇    下一篇

低剂量辐射对小鼠外周血干/祖细胞的动员作用

刘春水1,王冠军1*,李 薇1,谭业辉1,顾莲芝2,刘 念1,马俐君1   

  1. 1. 吉林大学第一医院血液肿瘤科,吉林 长春 130021;2. 吉林大学第二医院血液肿瘤科,吉林 长春 130041
  • 收稿日期:2005-05-18 修回日期:1900-01-01 出版日期:2006-07-28 发布日期:2006-07-28
  • 通讯作者: 王冠军

Mobilizing effect induced by low dose irradiation on mouse peripheral blood stem/progenitor cells

LIU Chun-shui1,WANG Guan-jun1*,LI Wei1,TAN Ye-hui1,GU Lian-zhi2,MA Li-jun1   

  1. 1. Department of Hematology and Oncology, First Hospital, Jilin University, Changchun 130021, China; 2. Department of Hematology and Oncology, Second Hospital, Jilin University, Changchun 130041, China
  • Received:2005-05-18 Revised:1900-01-01 Online:2006-07-28 Published:2006-07-28
  • Contact: WANG Guan-jun

摘要: 目的:探讨低剂量辐射对小鼠外周血干/祖细胞的动员效应。 方法:采用深部X线对小鼠进行低剂量辐射,甲基纤维素半固体培养、流式细胞仪检测单纯低剂量辐射及联合粒细胞集落刺激因子(G-CSF)后外周血粒单系造血祖细胞集落(CFU-GM)及造血干祖细胞数量(c-kit+细胞数)。 结果:小鼠受到25~75 mGy照射后外周血CFU-GM集落数明显增多,c-kit+细胞数平行增加,其中以75 mGy组最明显;受照后24 h CFU-GM集落数开始增加,72 h最明显,96 h后有所下降。75 mGy+半量G-CSF组周围血CFU-GM集落数及c-kit值均明显高于单纯低剂量照射组,接近全量G-CSF组。 结论:低剂量辐射对小鼠外周血干/祖细胞有动员效应,联合应用G-CSF有明显的协同作用。

关键词: 干细胞, 造血干细胞动员

Abstract: Objective To study the mobilizing effect induced by low dose irradiation on mouse peripheral blood stem/progenitor cells. Methods Peripheral blood CFU-GM was cultivated in methylcellulose semi-solid culture system,and c-kit+cells were counted by flow cytometry after low dose irradiation or combined with G-CSF. Results The CFU-GM and c-kit+ cells of peripheral blood in irradiated mice were much higher than those in control mice,the CFU-GM started to increase at 24 h after irradiation,reached maximum at 72 h and stayed high level till 96 h.The CFU-GM and c-kit+cells at 72 h after 75 mGy irradiation were the most. The CFU-GM and c-kit+cells in semi-dose G-CSF+ 75 mGy group were much higher than those in simple low dose irradiation group and were close to those in the group dealed with adequate G-CSF. Conclusion Low dose irradiation can mobilize peripheral blood stem/progenitor cells,and low dose irradiation combined with G-CSF can produce synergetic effect.

Key words: stem cells, hematopoietic stem cell mobilization

中图分类号: 

  • X591