1.第二军医大学放射医学教研室 上海 200433
黄越承,男,1973年11月出生,2004年于第二军医大学获博士学位,讲师,从事放射生物学和核医学基础研究
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黄越承, 单鹄声, 刘汉臣, 等. 羧酸富勒烯C3的合成及其保护辐射损伤效应[J]. 辐射研究与辐射工艺学报, 2009,27(2):115-119.
HUANG Yuecheng, SHAN Husheng, LIU Hanchen, et al. Synthesis of carboxyl-fullerene C3 and its radio-protection effects in cell[J]. Journal of Radiation Research and Radiation Processing, 2009,27(2):115-119.
通过Bingle环加成反应,利用富勒烯与丙二酸二乙酯催化合成羧酸富勒烯C,3,,经,1,H-NMR,,13,C-NMR以及MS-ESI确认其结构和分子量。通过芬顿体系检测了C,3,清除自由基的能力。利用CCK-8法和Annexin-V/PI染色和流式细胞分析法,分别检测C,3,对γ射线照射后AHH-1、HIEC细胞存活率,细胞凋亡和细胞周期变化的影响。结果表明,C,3,具有良好的清除自由基的能力,当芬顿体系中C,3,终浓度为1000 mg/L时,清除效率高达93 %左右。对1-12 Gy γ射线照射的细胞,C,3,具有良好的辐射保护作用,表现为照后细胞存活率明显升高,细胞凋亡率显著降低;且对于较高剂量的照射,辐射防护效果较好。说明C,3,对γ射线照射的细胞具有较好的辐射防护作用,其机理可能主要与其清除自由基的作用有关。
In this paper the carboxyl-fullerene C,3, was synthesized using Bingle’s cycloaddition reaction and its molecular structure was characterized by ,1,H-NMR,13,C-NMR and MS-ESI. The free radical scavenging ability of C,3, was confirmed by ESR in Fenton system. CCK-8 assay, AnnexinV/PI staining and flow cytometry assay were performed to evaluate the cell survival rate, apoptosis and cell cycle alteration after γ-ray irradiation respectively. The results showed that C,3, has excellent free radical scavenging ability in Fenton system with a scavenging rate 93 % at the concentration of 1000 mg/L. It has been revealed that C,3, has good radioprotection effects to AHH-1 and HIEC cells from radiation damage induced by 1~12 Gy γ-rays in evidence of higher survival and lower apoptosis rate of the cell. The mechanism may be related to its ability of scavenging free radicals.
羧酸富勒烯C3;γ 射线自由基AHH-1细胞HIEC细胞
Carboxyl-fullerene C3γ-rayFree radicalAHH-1 cellHIEC cell
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