Carcinogenesis, Teratogenesis & Mutagenesis ›› 2018, Vol. 30 ›› Issue (2): 109-113,119.doi: 10.3969/j.issn.1004-616x.2018.02.006

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Total body irradiation of mice with carbon-ion caused damage to the hematopoietic system

LIU Fang1,2, WANG Zhuanzi1, WEI Wei1, LI Wenjian1, DANG Bingrong1   

  1. 1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, Gansu;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2017-11-15 Revised:2018-03-13 Online:2018-03-30 Published:2018-03-30

Abstract: OBJECTIVE: To explore the damage and recovery of hematopoietic system in mice after total body irradiation (TBI) with different doses of carbon-ion. METHODS: Female BABL/c mice were irradiated with 0.5,1,4,6 Gy carbon-ion beam. DNA damage in bone marrow monocytes cells (BMMCs) were detected by alkaline comet assay and cell cycle distributions were detected by FACS. Peripheral blood cell counts and spleen index were detected at 1st,3rd,8th days after irradiation. RESULTS: Compared to the control group,carbon-ion TBI induced serious BMMNCs DNA damage in a dose-dependent manner (all r ≤ 0.96,P < 0.01). The most serious damage occurred at the 3rd day post-irradiation. At the 8th day after irradiation,DNA damage was still serious (P < 0.01). Carbon-ion TBI also caused dose-dependent bone marrow cells S phase and G2/M phase arrests and decrease of peripheral blood nucleated cells and spleen index. At the 8th day after irradiation,the S phase arrests of bone marrow cells has been alleviated to some extent,but the decrease of peripheral blood nucleated cells and spleen index were still significant. CONCLUSION: Carbon-ion TBI caused serious damage to the hematopoietic system of mice in a dose-dependent manner. At the 8th day after irradiation,the BMMCs DNA damage was still serious,and hematopoiesis did not recover.

Key words: carbon-ion irradiation, bone marrow cell, DNA damage and cell cycle distribution, peripheral blood cells, spleen index

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