Leukemic spleen cells are more potent than bone marrow-derived cells in a transgenic mouse model of CML

Leukemic spleen cells are more potent than bone marrow-derived cells in a transgenic mouse model of CML
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在 CML 转基因小鼠模型中,白血病脾细胞比骨髓来源的细胞更有效

DOI:
10.1038/leu.2011.366
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发表时间:
2012
期刊:
影响因子:
11.4
通讯作者:
Koschmieder S
Koschmieder S
中科院分区:
医学1区
文献类型:
--
作者:
Schemionek M;Spieker T;Kerstiens L;Elling C;Essers M;Trumpp A;Berdel WE;Müller-Tidow C;Koschmieder S

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脾脏大小是慢性粒细胞白血病 (CML) 最重要的危险因素之一,但 CML 中脾脏造血的致病机制仍不清楚。在这里,我们使用可诱导的 CML 转基因小鼠模型研究了脾脏中 Bcr-Abl 阳性白血病起始细胞的生物学。疾病动力学显示,与骨髓 (BM) 相比,脾脏中未成熟白血病细胞的增加更多。为了评估 Bcr-Abl 如何改变脾源性 CML 细胞的行为,我们在癌基因表达之前(“未诱导前”)或表达后 44 天(“诱导前”)移植这些细胞。与接受预未诱导脾细胞的小鼠相比,移植预诱导脾细胞的小鼠表现出显着增加的中性粒细胞增多和脾肿大,这表明供体中的 Bcr-Abl 表达增加了脾肿瘤负担。然而,预诱导也改变了这些细胞的生物学特性,如红细胞生成潜力的显着增加所示。这些结果与 BM 衍生的 CML 干细胞的结果不同,其中 Bcr-Abl 的预诱导先前已被证明会降低疾病的可移植性。此外,脾细胞对伊马替尼的敏感性低于骨髓细胞。总之,Bcr-Abl通过细胞自主机制改变脾白血病干细胞的生物学特性,但疾病表型也受到这些细胞微环境的影响。
Spleen size ranks among the most important risk factors in chronic myeloid leukemia (CML), but the pathogenic mechanisms of splenic hematopoiesis in CML remain poorly defined. Here, we studied the biology of Bcr–Abl positive leukemia-initiating cells in the spleen, using an inducible transgenic mouse model of CML. Disease kinetics showed greater increases of immature leukemic cells in spleen vs bone marrow (BM). To assess how Bcr–Abl alters the behavior of spleen-derived CML cells, we transplanted these cells either before (‘pre-uninduced’) or 44 days after (‘pre-induced’) expression of the oncogene. Mice transplanted with pre-induced spleen cells showed significantly increased neutrophilia and splenomegaly compared with mice receiving pre-uninduced spleen cells, suggesting that Bcr–Abl expression in the donors had increased splenic tumor burden. However, pre-induction also altered the biology of these cells, as shown by a striking increase in erythropoietic potential. These results differ from those of BM-derived CML stem cells where pre-induction of Bcr–Abl had previously been shown to decrease disease transplantability. Moreover, splenic cells were less sensitive to imatinib than BM cells. In conclusion, Bcr–Abl alters the biology of splenic leukemic stem cells by a cell-autonomous mechanism, but the disease phenotype is also influenced by the microenvironment of these cells.
骨髓红细胞生成前体细胞和骨髓纤维化对诊断 Ph1+ 慢性粒细胞白血病的预后影响——一项针对 495 名患者的多中心研究
DOI: 10.1046/j.1365-2141.2001.02555.x
发表时间: 2001
影响因子: 6.5
作者:
H. Kvasnicka;J. Thiele;A. Schmitt;V. Diehl;R. Zankovich;N. Niederle;L. Leder;H. Schaefer
通讯作者: H. Schaefer
脾切除术用于缓解慢性粒细胞白血病。
DOI: --
发表时间: 1976
影响因子: 5.9
作者:
G. Gomez;J. Sokal;A. Mittelman;C. Aungst
通讯作者: C. Aungst
DOI: 10.1182/blood.v99.9.3197
发表时间: 2002-05-01
期刊: BLOOD
影响因子: 20.3
作者:
Chalandon, Y;Jiang, XY;Eaves, C
通讯作者: Eaves, C
慢性粒细胞白血病骨髓、脾脏和肝脏造血组织的不同组成和有丝分裂活性。
DOI: --
发表时间: 1976
期刊: Acta Haematologica
影响因子: 2.4
作者:
U. Sjögren;L. Brandt
通讯作者: L. Brandt
脾脏大小和染色体分析作为慢性粒细胞白血病的预后因素。
DOI: --
发表时间: 1979
期刊:
影响因子: --
作者:
Collins Rk;Jackson Jf;Morrison Fs;Meydrech Ef
通讯作者: Meydrech Ef