Ascl1 and Neurog2 form novel complexes and regulate Delta-like3 (Dll3) expression in the neural tube.
Ascl1 and Neurog2 form novel complexes and regulate Delta-like3 (Dll3) expression in the neural tube.
复制标题
DOI:
10.1016/j.ydbio.2009.01.007
复制
发表时间:
2009-04-15
影响因子:
2.7
通讯作者:
Johnson, Jane E.
中科院分区:
文献类型:
--
作者:
Henke, R. Michael;Meredith, David M.;Borromeo, Mark D.;Savage, Trisha K.;Johnson, Jane E.
关键词:
Delta-like 3 (Dll3) is a Delta family member expressed broadly in the developing nervous system as neural progenitor cells initiate differentiation. A proximal promoter sequence for Dll3 is conserved across multiple species and is sufficient to direct GFP expression in a Dll3-like pattern in the neural tube of transgenic mice. This promoter contains multiple E-boxes, the consensus binding site for bHLH factors. Dll3 expression and the activity of the Dll3-promoter in the dorsal neural tube depends on the basic helix-loop-helix (bHLH) transcription factors Ascl1 (Mash1) and Neurog2 (Ngn2). Mutations in each E-box identified in the Dll3-promoter allowed distinct enhancer or repressor properties to be assigned to each site individually or in combination. In addition, each E-box has distinct characteristics relative to binding of bHLH factors Ascl1, Neurog1, and Neurog2. Surprisingly, novel Ascl1 containing DNA binding complexes are identified that interact with specific E-box sites within the Dll3-promoter in vitro. These complexes include Ascl1/Ascl1 homodimers and Ascl1/Neurog2 heterodimers, complexes that in some cases require additional undefined factors for efficient DNA binding. Thus, a complex interplay of E-box binding proteins spatially and temporally regulate Dll3 levels during neural tube development.
登录
查看更多内容
DOI:
10.1083/jcb.200702009
发表时间:
2007-07-30
期刊:
The Journal of cell biology
影响因子:
--
作者:
Geffers I;Serth K;Chapman G;Jaekel R;Schuster-Gossler K;Cordes R;Sparrow DB;Kremmer E;Dunwoodie SL;Klein T;Gossler A
通讯作者:
Gossler A
影响因子:
2.7
作者:
Gradwohl, G;Fode, C;Guillemot, F
通讯作者:
Guillemot, F
DOI:
10.1073/pnas.89.1.38
发表时间:
1992-01-01
影响因子:
11.1
作者:
BEGLEY, CG;LIPKOWITZ, S;KIRSCH, IR
通讯作者:
KIRSCH, IR
影响因子:
3.5
作者:
Lindsell, CE;Boulter, J;Weinmaster, G
通讯作者:
Weinmaster, G
影响因子:
5.3
作者:
GENETTA, T;RUEZINSKY, D;KADESCH, T
通讯作者:
KADESCH, T