J4 ›› 2011, Vol. 37 ›› Issue (2): 191-195.

• 基础研究 •    下一篇

低剂量电离辐射诱导小鼠睾丸中细胞色素 c和caspase-3表达的变化

方芳1,2|刘扬2|吕喆2|杨筱茜3|赵红光4|龚守良2|王志成2   

  1. 1.吉林大学公共卫生学院营养与食品卫生学教研室|吉林 长春 130021;2.吉林大学公共卫生学院 卫生部放射生物学重点实验室| 吉林 长春 130021;3.中国医科大学附属第一医院心血管内科|辽宁沈阳 110000;4.吉林大学第一医院核医学科|吉林 长春 130021
  • 收稿日期:2010-11-06 出版日期:2011-03-28 发布日期:2011-03-28
  • 通讯作者: 龚守良(Tel:0431-85619443,E-mail:gongsl@163.com);王志成(Tel:0431-85619443,E-mail:zhicheng@jlu.edu.cn) E-mail:gongsl@163.com;zhicheng@jlu.edu.cn
  • 作者简介:方 芳(1981-)|女|吉林省白城市人|讲师|医学博士|主要从事食品毒理和辐射生物学效应方面的研究。
  • 基金资助:

    国家自然科学基金资助课题(30970681);吉林大学基本科研业务费项目资助课题(200903116)

Changes of Cyt c and caspase-3 expressions in mouse testis induced by low dose irradiation

FANG Fang1,2,LIU Yang2,LU Zhe2,YANG Xiao-xi3,ZHAO Hong-guang4,GONG Shou-liang2,WANG Zhi-cheng2   

  1. 1.Department of Nutrition and Food Hygiene,School of Public Health,Jilin University,Changchun 130021,China;2. Key Laboratory of Radiobiology,Ministry of Health,School of Public Health,Jilin University,Changchun 130021| China;3.Department of Cardiology,First Affiliated Hospital,China Medical University,Shenyang 11000,China;4. Department of Nuclear Medicine,First Hospital,Jilin University,Changchun 130021|China)
  • Received:2010-11-06 Online:2011-03-28 Published:2011-03-28

摘要:

目的:研究低剂量电离辐射诱导小鼠睾丸中细胞色素c(Cyt c)和caspase-3表达的变化,阐明二者对低剂量电离辐射诱导小鼠睾丸细胞凋亡的作用。方法:实验小鼠分为不同剂量(0、0.050、0.075、0.100和0.200 Gy)组与不同时程(0、6、12和24 h)组。采用实时PCR和Western blotting分别检测不同剂量X射线照射后不同时间小鼠睾丸组织中细胞色素c(Cyt c)和caspase-3 mRNA和蛋白表达的变化。结果:实时PCR结果显示,不同剂量X射线照射后12 h,Cyt c和caspase-3 mRNA表达随剂量增加而增加,Cyt c mRNA在0.100 Gy照射时表达最多,而caspase-3则在0.075 Gy照射时表达最多;在0.075 Gy照射时二者蛋白表达最多。0.075 Gy照射后Cyt c和caspase-3 mRNA表达随着时间延长表达增多,24 h时达到最高;二者蛋白表达在12 h时最高。结论:低剂量电离辐射能够诱导小鼠睾丸生精细胞中Cyt c和caspase-3 mRNA和蛋白表达的增加,并且具有剂量和时程规律性。

关键词: 细胞色素c; caspase-3;实时PCR;电离辐射;生精细胞;小鼠

Abstract:

Abstract:Objective To investigate the effect of low dose irradiation on the expression changes  of Cyt c and caspase-3 in mouse testis,and  interpret the effects  on  apoptosis in mouse testis induced by irradiation. Methods The mice were divided into different doses(0,0.050,0.075,0.100and 0.200 Gy)groups and different time course (0,6,12 and 24 h) groups. The expressions of Cyt c and caspase-3 mRNA and proteins in mouse testis tissues irradiated with different doses X-rays were observed by real time PCR and Western blotting.Results The real time PCR results indicated that the expressions of Cyt c and caspase-3mRNA were increased with the dose increasing 12 h after irradiation with different doses of X-rays,and the expression of Cyt c mRNA reached the peak after irradiated with 0.100 Gy,but the expression of caspase-3 mRNA expression reached the peak after irradiated with 0.075 Gy;the expression levels of Cyt c and caspase-3protein were the highest when irradiated with 0.075 Gy X-rays. The expressions of Ct c and caspase-3 mRNA after irradiation with 0.075 Gy X-rays were increased with the time prolongation,and reached the peak after 24 h,but the Cyt c and caspase-3 proteins expreesed  the most 12 h after irradiation with 0.075 GyX-rays. Conclusion The mRNA and protein expressions of Cyt c and caspase-3 in mouse testis spermatogenic cells can be increased by low dose irradiation with dose- and time-effect regularity.

Key words: Cyt c;caspase-3;real time PCR;irradiation;spermatogenic cell;mice