淋巴细胞功能相关抗原-3(CD58)在儿童期急性B淋巴细胞白血病近期疗效判断中的应用

本研究评估CD58在急性B淋巴细胞白血病(B-ALL)近期疗效判断中的价值。应用四色流式细胞分析技术观察135例儿童期B-ALL患者CD58分子的表达特点;建立用CD58/CD10/CD34/CD19抗体组合检测B-ALLMRD的方案;结合CD58的表达情况和MRD监测结果分析CD58在B-ALL中的预后价值。结果表明135例B-ALL的平均CD58MFI为113.08±63.33,15例正常骨髓的CD19+CD10+细胞的平均CD58MFI为14.68±5.26,两者差异显著(P<0.01);51.9%(70/135)B-ALL患者的CD58分子强表达,可以用CD58为指标进行MRD检测;CD58/CD10/CD34/CD19抗体组合的有效频率仅次于TdT/CD10/CD34/CD19,为51.9%;CD58高表达组的MRD阳性率显著低于CD58低表达组(P<0.05)。结论CD58可以作为B-ALLMRD检测的指标,此结果丰富了MRD检测的组合;CD58的高表达可以作为B-ALL预后较好的指标。

Prognostic Significance of Lymphocyte Function Associated Antigen-3 (CD58) in Childhood B Cell-Acute Lymphocytic Leukemia

This study was aimed to investigate the value of CD58 in evaluation of early therapeutic effect on childhood B-ALL. The expression features of CD58 in 135 cases of childhood B-ALL were analyzed by four-color flow cytometry; MRD detection protocol for B-ALL using CD58/CD10/CD34/CD19 combination was established; the correlation between the expression features of CD58 and MRD detection was analyzed for the early therapeutic response in childhood B-ALL. The results showed that the mean value of CD58 MFI in 135 cases of B-ALL was 113.08 +/- 63.33, which was significantly higher than that in 15 cases of normal bone marrow controls (14.68 +/- 5.26, P < 0.01). In addition, CD58 was over expressed in 51.9% (70/135) of B-ALL patients, indicating that CD58 could be an effective marker in MRD detection. The CD58/CD10/CD34/CD19 was the second most effective combination next to TdT/CD10/CD34/CD19 in B-ALL MRD detection with flow cytometry. Meanwhile, the positive rate of MRD detection by flow cytometry was significantly lower in CD58 over expression group (P < 0.05). It is concluded that CD58 may be used as an indicator for detection of MRD in B-ALL patients, which would enrich the combination of MRD detection. The CD58 over expression may be considered as a marker of a favorable prognosis in childhood B-ALL.