PCR检测儿童微小残留白血病的研究进展  

Detection of Minimal Residual Disease in Children Leukemia Patients by Using PCR——Review

作　　者：何映谊[1] 叶铁真[1] 

机构地区：[1]广州医学院第一附属医院儿科

出　　处：《中国实验血液学杂志》2007年第3期652-656,共5页Journal of Experimental Hematology

摘　　要：微小残留白血病(MRD)是指白血病经化疗缓解后在骨髓中仍存在形态上不能检测到的白血病细胞,是白血病复发的主要原因。儿童MRD的检测对判断儿童白血病的预后、制定白血病的治疗方案有重要意义。PCR方法在MRD检测中具有快速、特异、简便、经济和样本量少等特点。本文综述近年以多重PCR初筛白血病靶基因,以荧光定量PCR(FQ-PCR)追踪MRD方面所取得的进展。MRD detection in children leukemia has a potential importance to predict clinical outcome and to modify treatment protocols of the diseases. Although some patients with leukemia have achieved complete remission according to the clinical and morphological criteria, there are still very low numbers of malignant cells that can not be discriminated by morphology and remained in bone marrow, which is called minimal residual disease （MRD） and is the main reason leading to relapse, MRD detection has an important significance for designing treatment protocols. Several methods of MRD detection have been developed. These include conventional cytogenetics, fluorescence in situ hybridization （FISH）, flow-cytometric immunophenotyping （FCM）, Southern blot and polymerase chain reaction （PCR） techniques, etc. Each of these techniques has its advantages and disadvantages, so not all of them are suitable for clinical MRD detection because of several inherent disadvantages, such as limited sensitivity, time-consuming, high cost, or requiting high-quality DNA or RNA. For example, the sensitivities of conventional cytogenetics, FISH, FCM and Southern blot approaches for MRD monitoring are 10 ^-1 - 10^-2, 10^-2,10^-3 -10^-4 and 10^-1 , respectively. Relatively, PCR can reach a good sensitivity of 10^-4 - 10^-6, and show more advantages, such as fast, specific, simple and low-cost, as well as minimal amounts of DNA or RNA for detection, etc. , so PCR has its specific features for MRD detection. In this review, the progress on the detection technique for screening leukemia specific marker by multiplex PCR and FQ- PCR in recent years are summarized.

关 键 词：微小残留白血病 PCR 多重PCR FQ-PCR 儿童白血病 

分 类 号：Q503[生物学—生物化学] R733.7[医药卫生—肿瘤]