Id4基因甲基化在监测异基因外周血干细胞移植治疗急性白血病疗效中的意义  

Significance of Id4 Gene Methylation in Monitoring Efficacy of Allo-PBSCT for Treatment of Acute Leukemias

作　　者：赵瑜[1] 李红华[1] 薄剑[1] 靖彧[1] 高春记[1] 王全顺[1] 于力[1] 

机构地区：[1]中国人民解放军总医院血液科,北京100853

出　　处：《中国实验血液学杂志》2009年第1期151-154,共4页Journal of Experimental Hematology

基　　金：973国家重点基础研究专项经费(2005CB522400)

摘　　要：本研究探讨和验证Id4基因甲基化在急性白血病(AL)患者异基因外周血干细胞移植后疗效监测中的意义。对29例接受异基因外周血干细胞移植的AL患者,用甲基化特异性PCR(MS-PCR)方法检测其移植前、移植后1、3、6(和12)个月的骨髓Id4基因甲基化状态,并随诊分析。结果表明:29例AL患者中有18例患者移植前Id4基因呈甲基化,其中8例患者在移植后再次出现Id4基因甲基化;而11例移植前Id4基因呈非甲基化的患者中只有1例在移植后再次甲基化;移植后出现Id4基因甲基化的9例患者中,有4例患者出现随访期内的白血病复发,而移植后Id4基因仍呈非甲基化的20例患者在随访期间无1例复发,两组间差异有统计学意义;移植后再次出现Id4基因甲基化的时间多在移植后6个月到1年。结论:对AL患者在移植前后进行Id4基因甲基化检测具有重要意义,选择移植前Id4基因非甲基化的患者进行移植将可能有益于减少白血病复发的机会,移植后进行Id4基因甲基化检测对于在临床预测白血病的复发具有重要意义。This study was purposed to investigate the significance of Id4 gene methylation in monitoring the efficacy of allo-PBSCT for treatment of acute leukemias. MS-PCR method was used to detect Id4 gene methylation in bone marrow samples from 29 patients with acute leukemia before and at 1, 3, 6 and 12 months after allo-PBSCT. The results showed that the Id4 gene was methylated in 18 patients before allo-PBSCT, out of which Id4 gene methylation in 8 patients could be detected sustainedly after allo-PBSCT, whereas among remaining 11 patients with Id4 gene unmethylation before PBSCT, the Id4 gene of only one case was found to be methylated after PBSCT. Out of 9 patients with Id4 gene methylation after allo-PBSCT, 4 had relapse during the follow-up. 20 patients with Id4 gene unmethylation after allo- PBSCT were in continuously complete remission status. Id4 gene methylation was found more frequently between 6 months and 1 year after allo-PBSCT. It is concluded that detecting Id4 gene methylation is important for the AL patients who underwent allo-PBSCT. Chosing the patients with Id4 gene unmethylaiton to receive allo-PBSCT may help to reduce relapse rate. After allo-PBSCT, Id4 gene methylation status can be regarded as an indicator for predicting prognosis of acute leukemias.

关 键 词：ID4基因 id4基因甲基化 急性白血病 异基因外周血造血干细胞移植 

分 类 号：R733.71[医药卫生—肿瘤]