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中国临床药理学与治疗学 ›› 2006, Vol. 11 ›› Issue (5): 515-518.

• 研究原著 • 上一篇    下一篇

血小板第4因子对急性辐射损伤小鼠骨髓细胞周期的调控作用

王海涛, 杨岚, 田琼1, 韩小霞2, 高瑛, 王心3   

  1. 第四军医大学西京医院血液内科,1药学系药理学教研室,2西京医院眼科, 3妇产科, 西安 710032, 陕西
  • 收稿日期:2006-02-28 修回日期:2006-03-16 出版日期:2006-05-26 发布日期:2020-12-09
  • 通讯作者: 杨岚, 女, 教授, 硕士生导师, 研究方向:趋化因子与造血调 控。 Tel:029-83375203   E-mail:yanglan@fmmu.edu.cn
  • 作者简介:王海涛, 女, 硕士研究生, 住院医师, 研究方向:趋化因子与造血调控。 Tel:029-82554054   E-mail:wanght78@fmmu.edu.cn
  • 基金资助:
    国家自然科学基金资助项目(No30470528);陕西省自然科学基金资 助项目(No2001SM54)

Protective effects of platelet factor 4 on bone marrow of mice with radi-ation injury and its mechanism

WANG Hai-tao, YANG Lan, TIAN Qiong1, HAN Xiao-xia2, GAO Ying, WANG Xin3   

  1. Department of Hematology, Xijing Hospital,1Department of Pharmacology, School of Pharmacy,2Department of Ophthal-mology,3Department of Gynaecology and Obstetrics, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shanxi, China
  • Received:2006-02-28 Revised:2006-03-16 Online:2006-05-26 Published:2020-12-09

摘要: 目的: 研究血小板第 4 因子(platelet factor 4, PF4) 对急性辐射损伤小鼠骨髓细胞的保护作用, 初 步探讨其机制。方法: 雄性 BALB/c 小鼠随机分为 3 组:照射组、PF4+照射组 、正常对照组。PF4 +照射 组在照射前 26 及 20 h 腹腔注射 PF4 40 μg·kg-1, 前 两组全身一次性 4 Gy60Co-γ射线照射, 照射后 d 1、 2、4 、8流式细胞仪测定小鼠骨髓细胞的细胞周期, 免疫组化法动态观察骨髓基质细胞 p21 蛋白表达水 平变化。结果: 流式细胞仪测定细胞周期, 照射后 d 1、2 的照射组及照射后 d 1 的 PF4 +照射组 G0 + G1 期细胞百分数均明显高于正常对照组, 而照射组 与PF4 +照射组各时间点之间亦存在明显差异(P<0.05)。 照射后 d 2、8 PF4 +照射组的 G0 +G1 期细 胞百分数与正常对照组无明显差异(P >0.05)。 免 疫组化结果显示照射后 d 2、4 PF4+照射组骨髓基 质细胞 p21 蛋白呈强阳性表达, 照射组呈弱阳性。 而照射后 d 8 照射组骨髓基质细胞 p21 蛋白呈强阳 性表达, PF4+照射组则呈弱阳性表达。正常对照组 p21 蛋白表达水平较低。 结论: PF4 通过调节细胞周 期对小鼠骨髓细胞有明显的辐射保护作用, 可尽快 恢复其造血功能, p21 蛋白的高表达可能在此保护 机制中起到了一定的作用。

关键词: 血小板第4因子, 辐射损伤, 细胞周期, p21蛋白

Abstract: AIM: To study the protective effects of platelet factor 4(PF4) on the bone marrow cellsof the ra-diation injury mice and to do some preliminary studies for its mechanism.METHODS: BALB/c male mice were randomly divided into three groups:exposure group, pro-tection group with PF4 and control group.The mice of protection group were injected PF4 (40 μg·kg-1) into abdominal cavity twice at 26 h and 20 h before irradiation of 4 Gy60Co-γray.The cell cycle of bone marrow cells was determinedwith flow cytometry on d 1、2、4、8 after ir-radiation.The expression level of p21 in BMSCswere de-tected with immunohistochemistry.RESULTS: The cells on G0 +G1 phase of exposure group on d 1、2 and of pro-tection group on d 1 were significantly higher than that of control group, the difference between exposure group and protection group is notable at every time point (P<0.05), while the difference between protection group on d 2、8 and exposure group on the same day was not signifi-cant(P >0.05).On d 2、4 after irradiation, the expres-sion of p21 in BMSCs of protection group was up-regulat-ed compared with that of exposure group.On d8 the result was opposite.CONCLUSION: PF4 has obvious protec-tive effects on the bone marrow of the radiation injury mice by controlling cell cycle and recovering its hemato-poietic function as early as possible.The high expression of p21maybe has a certain effect on the protective mecha-nism.

Key words: platelet factor 4, radiation injury, P21

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