慢性髓细胞白血病患者PRAME基因启动子甲基化改变  

Alteration of methylation status of PRAME gene promoter in patients with chronic myeloid leukemia

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作  者:姚冬明[1] 钱军[2] 林江[3] 李云[2] 陈芹[3] 陈星星[2] 

机构地区:[1]江苏大学附属人民医院检验科,江苏省镇江市212002 [2]江苏大学附属人民医院血液科,江苏省镇江市212002 [3]江苏大学附属人民医院中心实验室,江苏省镇江市212002

出  处:《实用医学杂志》2013年第21期3495-3498,共4页The Journal of Practical Medicine

基  金:国家自然科学基金资助项目(编号:81270630);江苏省"333工程"资助项目(编号:BRA2011085);江苏省自然科学基金资助项目(编号:BK2009206)

摘  要:目的:慢性髓系白血病(chronic myeloid leukemia,CML)患者中黑色素瘤优先表达抗原(PRAME)基因启动子区域的甲基化改变其及其临床相关性。方法:应用实时定量甲基化特异性PCR(real-time quantitative methylation-specific PCR,RQ-MSP)技术对55例CML患者及20例对照组骨髓单个核细胞标本的PRAME基因启动子甲基化状态进行检测。结果:28/55例(51%)CML患者出现PRAME启动子低甲基化改变,而20例对照未显示低甲基化,两组差异有显著统计学意义(P<0.001)。PRAME低甲基化与患者血液学相关参数及染色体分组均无相关性。PRAME启动子低甲基化频率随疾病进展而降低,在慢性期、加速期及急变期中分别为48%(22/46)、33%(1/3)及17%(1/6)。结论:PRAME基因低甲基化可能是参与CML发生的早期分子事件之一。Objective To analyze the methylation status of PRAME gene promoter and its correlations with clinical features in patients with chronic myeloid leukemia (CML). Methods Real-time quantitative methylation-specific PCR (RQ-MSP) assay was used to detect the methylation level of PRAME promoter in bone marrow samples from patients with CML (n = 55) and controls (n = 20). Results Hypomethylation of PRAME promoter was detected in 28 (51%) CML patients, but was not found in all 20 controls (P 〈 0.001). PRAME hypomethylation was not correlated with blood parameters or chromosomal abnormalities (P〉 0.05). The frequencies of PRAME promoter hypomethylation were decreased with the disease progression, and were 48% (22/46), 33% (1/3) and 17% (1/6) in chronic phase (CP), accelerated phase (AP) and blast crisis (BC), respectively. Conclusion Hypomethylation of PRAME promoter may be one of the molecular events involved in the disease progression of CML.

关 键 词:白血病 髓样 慢性期 PRAME基因 甲基化 

分 类 号:R733.72[医药卫生—肿瘤]

 

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