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
中科院分区:
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
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.
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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
影响因子:
5.9
作者:
G. Gomez;J. Sokal;A. Mittelman;C. Aungst
通讯作者:
C. Aungst
影响因子:
20.3
作者:
Chalandon, Y;Jiang, XY;Eaves, C
通讯作者:
Eaves, C
影响因子:
2.4
作者:
U. Sjögren;L. Brandt
通讯作者:
L. Brandt
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