AF10 regulates progressive H3K79 methylation and HOX gene expression in diverse AML subtypes.

AF10 regulates progressive H3K79 methylation and HOX gene expression in diverse AML subtypes.
复制标题

DOI:
10.1016/j.ccell.2014.10.009
复制
发表时间:
2014-12-08
期刊:
影响因子:
50.3
通讯作者:
Armstrong SA
Armstrong SA
中科院分区:
医学1区
文献类型:
--
作者:
Deshpande AJ;Deshpande A;Sinha AU;Chen L;Chang J;Cihan A;Fazio M;Chen CW;Zhu N;Koche R;Dzhekieva L;Ibáñez G;Dias S;Banka D;Krivtsov A;Luo M;Roeder RG;Bradner JE;Bernt KM;Armstrong SA

文献摘要

参考文献

被引文献

相似文献

同源异型 (HOX) 基因在多种恶性肿瘤(包括几种 AML 亚型)中失调。我们证明,随着造血细胞成熟,H3K79 二甲基化 (H3K79me2) 在 HOX 位点处转化为单甲基化 (H3K79me1),从而与 HOX 基因表达的减少相一致。我们发现 H3K79 甲基转移酶活性以及 H3K79me1 到 H3K79me2 的转化受 DOT1L 辅因子 AF10 调节。 AF10 失活可逆转白血病相关的表观遗传特征,排除异常的 HOXA 基因表达,并损害 MLL-AF9、MLL-AF6 或 NUP98-NSD1 融合体(机械上不同的 HOX 激活癌基因)的转化能力。此外,NUP98-NSD1 转化细胞对 DOT1L 的小分子抑制敏感。我们的研究结果表明,DOT1L/AF10 复合物的药理学抑制可能为一系列 HOXA 基因表达异常的恶性肿瘤提供治疗益处。
Homeotic (HOX) genes are dysregulated in multiple malignancies including several AML subtypes. We demonstrate that H3K79 dimethylation (H3K79me2) is converted to mono-methylation (H3K79me1) at HOX loci as hematopoietic cells mature thus coinciding with a decrease in HOX gene expression. We show that H3K79 methyltransferase activity as well as H3K79me1 to H3K79me2 conversion is regulated by the DOT1L co-factor AF10. AF10 inactivation reverses leukemia-associated epigenetic profiles, precludes abnormal HOXA gene expression and impairs the transforming ability of MLL-AF9, MLL-AF6 or NUP98-NSD1 fusions – mechanistically distinct HOX-activating oncogenes. Furthermore, NUP98-NSD1 transformed cells are sensitive to small-molecule inhibition of DOT1L. Our findings demonstrate that pharmacological inhibition of the DOT1L/AF10 complex may provide therapeutic benefit in an array of malignancies with abnormal HOXA gene expression.
DOI: 10.1016/j.it.2012.06.002
发表时间: 2012-11
影响因子: 16.8
作者:
Deshpande AJ;Bradner J;Armstrong SA
通讯作者: Armstrong SA
DOI: 10.1371/journal.pone.0051626
发表时间: 2012
期刊: PloS one
影响因子: 3.7
作者:
Chamorro-Garcia R;Cervera M;Arredondo JJ
通讯作者: Arredondo JJ
DOI: 10.1016/j.molcel.2013.06.002
发表时间: 2013-06-27
期刊: MOLECULAR CELL
影响因子: 16
作者:
Cecere, Germano;Hoersch, Sebastian;Jensen, Morten B.;Dixit, Shiv;Grishok, Alla
通讯作者: Grishok, Alla
DOI: 10.1182/blood-2010-07-298349
发表时间: 2011-01-06
期刊: BLOOD
影响因子: 20.3
作者:
Martinez-Garcia, Eva;Popovic, Relja;Licht, Jonathan D.
通讯作者: Licht, Jonathan D.
DOI: 10.1073/pnas.93.10.4804
发表时间: 1996-05-14
影响因子: 11.1
作者:
Dreyling, MH;MartinezCliment, JA;Bohlander, SK
通讯作者: Bohlander, SK