Myeloid cell differentiation arrest by miR-125b-1 in myelodysplastic syndrome and acute myeloid leukemia with the t(2;11)(p21;q23) translocation.
Myeloid cell differentiation arrest by miR-125b-1 in myelodysplastic syndrome and acute myeloid leukemia with the t(2;11)(p21;q23) translocation.
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DOI:
10.1084/jem.20080285
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发表时间:
2008-10-27
期刊:
影响因子:
--
通讯作者:
Brousset P
中科院分区:
文献类型:
--
作者:
Bousquet M;Quelen C;Rosati R;Mansat-De Mas V;La Starza R;Bastard C;Lippert E;Talmant P;Lafage-Pochitaloff M;Leroux D;Gervais C;Viguié F;Lai JL;Terre C;Beverlo B;Sambani C;Hagemeijer A;Marynen P;Delsol G;Dastugue N;Mecucci C;Brousset P
Most chromosomal translocations in myelodysplastic syndromes (MDS) and acute myeloid leukemia (AML) involve oncogenes that are either up-regulated or form part of new chimeric genes. The t(2;11)(p21;q23) translocation has been cloned in 19 cases of MDS and AML. In addition to this, we have shown that this translocation is associated with a strong up-regulation of miR-125b (from 6- to 90-fold). In vitro experiments revealed that miR-125b was able to interfere with primary human CD34+ cell differentiation, and also inhibited terminal (monocytic and granulocytic) differentiation in HL60 and NB4 leukemic cell lines. Therefore, miR-125b up-regulation may represent a new mechanism of myeloid cell transformation, and myeloid neoplasms carrying the t(2;11) translocation define a new clinicopathological entity.
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