摘要
目的探讨供者淋巴细胞输注(DLI)治疗非清髓性异基因造血干细胞移植后血液病复发的疗效。方法5例恶性血液病患者接受非清髓性造血干细胞移植,在形成混合性嵌合体和血液学部分缓解(例1～4)或进步(例5)后,进行DLI。移植后的4～5周进行第1次DLI,首次输注T淋巴细胞数量为(0.5～1.0)×105/kg,以后每隔3～4周逐渐增加输注的淋巴细胞数量,至(0.5～2.0)×108/kg,平均行DLI4.6次(3～8次)。结果例1～4分别经过7、3、2、3次DLI后,性染色体及DNA指纹图由混合性嵌合体转变为完全性嵌合体;例2、3经过DLI后消除了微小残留病,除例5仍然为混合性嵌合体和进步状态外,4例均达血液学完全缓解。例1、2和例3、4分别出现Ⅰ/Ⅱ度急性移植物抗宿主病和广泛/局限型慢性移植物抗宿主病,例2、4出现骨髓抑制。结论DLI可使异基因造血干细胞移植后短暂的混合性嵌合体向完全性嵌合体转变,并可清除微小残留病。
Objective To evaluate the application of donor lymphocyte infusion (DLI) after nonmyeloablative stem cell transplantation (NSCT) for hematologic malignancies. Methods Donor lymphocyte infusion was performed on 5 hematologic malignant patients with mixed chimera (MC) and hemato logic partial remission of case 1, 2, 3, 4 or progression of case 5 after NSCT. The patients received the first DLI on the 4th to 5 th week posttransplant. The first T cell dose of ( 0.5 ～ 1.0 )×10 5/kg was followed by the escalated doses to the range of ( 0.5 ～ 2.0 )×10 8/kg. The total of procedures were performed at an average of 4.6 procedures (range 3～8) at intervals of 3～4 weeks. Results The MC was converted gradually into complete chimera (CC) after DLI in case 1, 2, 3 and 4 who were subjected to 7, 2, 3, 3 procedures respectively, and eventually converted into hematologic complete remission (CR), while case 5 remained MC and progression. The micro residual disease (MRD) of case 2 and 3 disappeared after DLI. Grade Ⅰ/Ⅱ acute graft versus host disease (aGVHD) in case 1, 2 and extensive/limited chronic graft versus host disease (cGVHD) in case 3 and 4 were found, and myelosuppression in case 2 and 4 was found as well. Conclusion Transient mixed donor recipient hematopoietic cell MC may be successfully converted into complete CC by DLI post transplant, and DLI can eliminate MRD. GVHD and myelosuppression remains major complications of DLI.
出处
《中华器官移植杂志》
CAS
CSCD
北大核心
2004年第5期308-311,共4页
Chinese Journal of Organ Transplantation
