[1]杨岩,王娟,王冠军.低剂量辐射对人骨髓间充质干细胞影响的研究[J].国际放射医学核医学杂志,2008,32(3):183-187.
　YANG Yan,WANG Juan,WANG Guan-jun.Study on human mesenchymal stem cells from bone marrow pretreated with low dose radiation[J].International Journal of Radiation Medicine and Nuclear Medicine,2008,32(3):183-187.
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低剂量辐射对人骨髓间充质干细胞影响的研究(/HTML)
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《国际放射医学核医学杂志》[ISSN:1673-4114/CN:12-1381/R]

卷:
32
期数:
2008年第3期
页码:
183-187
栏目:
放射生物学
出版日期:
1900-01-01

文章信息/Info

Title:
Study on human mesenchymal stem cells from bone marrow pretreated with low dose radiation
作者:
杨岩1;  王娟2;  王冠军1
1. 130021 长春, 吉林大学第一医院血液肿瘤科;
2. 130021 长春, 吉林省人民医院肿瘤科
Author(s):
YANG Yan1;  WANG Juan2;  WANG Guan-jun1
1. Department of Hematology, First Hospital, Jilin University, Changchun 130021, Chino;
2. Department of Oncology, Jilin Province Hospital, Changchun 130021, China
关键词:
剂量效应关系; 辐射; 细胞周期; 细胞凋亡; 造血细胞生长因子; 骨髓间充质干细胞
Keywords:
Dose-response relationship; radiation; Cell cycle; Apoptosis; Hematopoietic cell growth factors; Bone marYow mesenchymal stem cells
摘要:
目的 探讨低剂量辐射(LDR)对人骨髓间充质干细胞(hBM-MSC)生物学特性的影响。方法 应用体外培养传代的第四代hBM-MSC,采用X射线照射,照射剂量分别为50 mGy、75mGy、100 mGv,剂量率为12.5 mGy/min,分别观察LDR后hBM-MSC生长曲线、细胞周期与凋亡的变化及细胞因子、干细胞因子(SCF)、白细胞介素6(IL-6)、巨噬细胞集落刺激因子(M-CSF)表达量的变化。结果 LDR后,hBM-MSC从72 h起生长明显加快;LDR照射hBM-MSC后,在G0-G1期百分率逐渐减少,S期百分率在照射后48 h、72 h逐渐明显增多,以75 mGy照射后72 h的S期百分率增多最明显,为68.88%,而细胞凋亡的变化结果是LDR后在24 h、48 h有增多趋势,照射后72 h,凋亡细胞百分率有减少趋势;LDR照射hBM。MSC后24 h、48 h SCF分泌量均有升高趋势;50mGv、75mgy、100mGyX射线照射hBM-MSC后在培养的24 h、48 h,IL-6分泌量均有升高趋势;LDR照射hBM-MSC后,除50mGy照射后72h外,M-CSF分泌量在不同剂量照射后24 h、48 h、72 h均持续升高。结论 LDR后hBM-MSC从生长曲线、细胞周期与凋亡的变化及细胞因子表达量的变化均表现出兴奋性效应。
Abstract:
Objective To study effects of human bone marrow mesenchymal stem ceHs(hBM-MSC)from bone marrow pretreated with low dose radiation(LDR).Methods The ceils were the hBM-MSC.They were exposed to X rays at the dose of 50 mGy,75 mGy、100 mGy(dose rate 12.5 mGy/min).The growth curve,cell cycle and apoptosis of hBM-MSC treated by LDR were investigated.The content changes of stem cell factor(SCF),interleukin-6(IL-6),macrophage colony stimulating factor(M-CSF)secreted by hBM-MSC after treated by LDR were determined by enzyme linked immunosorbont assay method.Results The growth rates of hBM-MSC treated by LDR obviously increase from 72 h.The cell cycle and apoptosis were examined with FORTRAN Atomatic Checkout Systom.The results show that the G0/G1 stage cells decrease after exposure to LDR,the percent of G0/G1 stage cells of 75 mGy at 72 h is the lowest(30.86%).However,the S stage cells percentage gradually increase at 48 h and 72 h.The most one is 75 mGy group at 72 h,which reaches to 68.88%.The apoptosis percentages have increased tendency at 24 h and 48h in all dose groups,especially in 100 mGy at 24 h(25.99%),while have decreased tendency at 72 h and the most decreased group is the 50 mGy(6.8%),transient enhancement of apoptosis ha the early stage and soon being decreased.The contents of SCF have increased tendency at 24 h,48 h.As for IL-6,the contents in different dose groups at 24 h and 48 h have up-regulation.These groups,50 mGy at 24 h,48 h,75 mGy at 24 h,48 h,100 mGy at 24 h have statistical difference compared with their control groups respectively.The content of IL-6 has greatest enhancement at dose of50 mGy.The contents of M-SCF in all the groups at 24 h,48 h and 72 h except for the 50 mGy dose at 72 h have also been found increased.The greatest increased content occur in the 75 mGy dose group at 72 h.Conclusion This conclusion show that LDR has hormesis effect on hBM-MSC in cell growth,cell cycle and content of hematopoietic factors.

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备注/Memo

备注/Memo:
收稿日期:2007-09-23。
基金项目:长春市科技计划项目(04-07SF081)
通讯作者:杨岩(E-mail:yangyan6333@163.com)
更新日期/Last Update: 1900-01-01