以人外周血为研究对象,研究照射后RPS27L基因的时间效应和剂量效应以及本底水平,探究其作为辐射损伤早期生物标志物的可行性。采集3名健康成人外周血,利用γ 射线对其进行照射至吸收剂量分别为0、0.5、1、2、4、6和10 Gy,受照后37 ℃培养2、4、8、12和24 h,利用实时荧光定量PCR检测RPS27L基因的表达变化,并分析在37个健康人个体中的本底水平。结果显示,受照后的4、8、12和24 h RPS27L基因表达变化显著,而且具有很好的剂量依赖关系;在不同年龄和性别的个体中RPS27L本底水平相对稳定。因此,RPS27L基因具有作为新的辐射损伤标志物的潜力。
Abstract
In order to explore RPS27L’s possibility as a biomarker of radiation damage, we studied its time-response and dose-response after irradiation as well as its background level. Three healthy adults’ peripheral blood was exposed to gamma-rays with 0, 0.5, 1, 2, 4, 6, and 10 Gy, separately and cultured for 2, 4, 8, 12, and 24 h respectively. RPS27L’s expression change was detected by quantitative real-time PCR. We also analyzed its background level in 37 individuals. The results showed that RPS27L had a significant difference at 4, 8, 12, 24 h and a great dose-independent response. There was also a uniform background level of RPS27L among different age and gender. Thus, RPS27L is of great potential to be a new biomarker of radiation.Cited