Histone demethylase RBP2 decreases miR-21 in blast crisis of chronic myeloid leukemia.
Histone demethylase RBP2 decreases miR-21 in blast crisis of chronic myeloid leukemia.
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组蛋白去甲基化酶 RBP2 在慢性粒细胞白血病急变期降低 miR-21
DOI:
10.18632/oncotarget.2859
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发表时间:
2015-01-20
期刊:
影响因子:
--
通讯作者:
Chen C
中科院分区:
文献类型:
--
作者:
Zhou M;Zeng J;Wang X;Wang X;Huang T;Fu Y;Sun T;Jia J;Chen C
Chronic myeloid leukemia in the blastic phase (CML-BP) responds poorly to clinical treatments and is usually fatal. In this study, we found that the histone H3 lysine 4 (H3K4) demethylase RBP2 (also called JARID1A and KDM5A) is underexpressed in CML-BP. The RBP2 histone demethylase stimulates leukemia cell differentiation and inhibits cell proliferation. We identified miR-21 was directly downregulated by RBP2 and found that miR-21 downregulated PDCD4 expression in leukemia cells. By binding to miR-21 promoter and by demethylating of trimethylated H3K4 at the miR-21 locus, RBP2 downregulated miR-21 expression. This in turn activated PDCD4. In conclusion, RBP2 epigenetically downregulated miR-21 in blast transformation of CML.
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通讯作者:
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影响因子:
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