Induction of human γ globin gene expression by histone deacetylase inhibitors

被引:68
作者
Cao, H
Stamatoyannopoulos, G
Jung, M
机构
[1] Univ Washington, Div Med Genet, Seattle, WA 98195 USA
[2] Univ Munster, Dept Pharmaceut Chem, D-4400 Munster, Germany
关键词
D O I
10.1182/blood-2003-02-0478
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
We investigated the induction of human gamma globin gene activity by 3 classes of histone deacetylase inhibitors: amide analogues of trichostatin A, hydroxamic acid analogues of trapoxin, and scriptaid and its analogues. The screening consisted of measuring the effects of these compounds on gamma and beta human gene promoter activity by using cultures of GM979 cells stably transfected with a construct containing a gamma promoter linked to firefly luciferase and a beta promoter linked to renilla luciferase. Compounds belonging to all 3 classes induced gamma gene promoter activity in the screening assay in low micromolar concentrations. Histone deacetylase (HDAC) inhibitors increased acetylation of histone H4 and induced the expression of endogenous murine embryonic genes. They also increased the levels of gamma mRNA and the frequency of fetal hemoglobin-containing erythroblasts in erythroid burst-forming unit (BFUe) cultures from healthy adult individuals. Compounds that displayed very similar degrees of inhibition of the HDAC activity in an HDAC enzymatic assay differed strikingly on their effects on gamma gene promoter activity, raising the possibility of selectivity of HDACs that interact with the gamma globin gene chromatin.
引用
收藏
页码:701 / 709
页数:9
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