移植性慢性髓系白血病裸鼠模型的初步建立

慢性髓系白血病（chronic myeloid leukemia,CML）是一种起源于造血干细胞的恶性克隆性疾病,CML干细胞被认为是导致疾病发生、发展并最终急变的根源,目前尚缺乏稳定的动物模型证明CML干细胞的存在。本研究旨在通过建立CML裸鼠模型,探讨人CML细胞在BABL/c裸小鼠体内的生物学行为,并使CML干细胞在裸鼠体内富集成为可能。对4至6周龄的BALB/c裸鼠进行切脾（splenectomy,S）,环磷酰胺腹腔注射（cytoxan intrap-eritoneal injection,C）及全身亚致死剂量照射（sublethal irradiation,I）等预处理（SCI）后,经尾静脉接种（5-8）×10^7个人CML慢性期患者单个核细胞。对4至6周龄的BALB/c裸鼠进行全身致死剂量照射（lethal irradiation）后,经尾静脉接种5×10^6同源裸鼠骨髓细胞和（5-8）×10^7个人CML慢性期患者单个核细胞。应用RT-PCR、塑胶包埋病理切片以及流式细胞术等检测裸鼠各脏器及骨髓中人CML细胞浸润情况,并比较两种建模方法的优劣。结果表明,CML细胞能浸润至经SCI预处理的裸鼠骨髓体内,但目前成功率还很低,仅为通过BABL/c裸鼠建立人CML动物模型的一个开端。而经致死剂量预处理裸鼠,CML细胞未能浸润至骨髓。结论：人CML慢性期白血病细胞能在经SCI预处理的裸鼠体内形成白血病,为建立CML动物模型寻找到新的方向。

Preliminary establishment of transplanted human chronic myeloid leukemia model in nude mice

Chronic myeloid leukemia(CML) is a malignant clonal disease derived from hematopoietic stem cells.CML stem cells were thought to be the root which could lead disease development and ultimately rapid change.However,a stable animal model for studying the characteristics of CML stem cells is currently lacking.This study was aimed to establish a transplanted human CML nude-mice model to further explore the biological behavior of CML stem cells in vivo,and to enrich CML stem cells in nude mice by series transpla...