A network of broadly expressed HLH genes regulates tissue-specific cell fates.
A network of broadly expressed HLH genes regulates tissue-specific cell fates.
复制标题
广泛表达的HLH基因的网络调节组织特异性细胞命运。
DOI:
10.1016/j.cell.2011.08.055
复制
发表时间:
2011-11-11
期刊:
影响因子:
64.5
通讯作者:
Baker NE
中科院分区:
文献类型:
--
作者:
Bhattacharya A;Baker NE
Spatial and temporal expression of specific basic Helix-Loop-Helix (bHLH) transcription factors defines many types of differentiation. We find that the much broader expression of the heterodimer partners of these specific factors is also highly regulated, through a distinct mechanism. A cross-interacting regulatory network links expression of the Drosophila E-protein Daughterless, required to heterodimerize with bHLH proteins, with expression of the Id protein Extramacrochaetae, an antagonist of bHLH proteins. Coupled transcriptional feedback loops maintain the widespread Extramacrochaetae expression that restrains Daughterless expression, opposing bHLH-dependent differentiation while enhancing growth and cell survival. Where extracellular signals repress extramacrochaetae, Daughterless expression is then able to increase. This defines regions of proneural ectoderm, independently from the proneural bHLH genes. Similar regulation is found in multiple Drosophila tissues and in mammalian cells, and may be a conserved general feature of developmental regulation by HLH proteins.
登录
查看更多内容
影响因子:
56.9
作者:
GOLIC, KG
通讯作者:
GOLIC, KG
影响因子:
16.2
作者:
Goulding, SE;zur Lage, P;Jarman, AP
通讯作者:
Jarman, AP
影响因子:
64.5
作者:
BENEZRA, R;DAVIS, RL;WEINTRAUB, H
通讯作者:
WEINTRAUB, H
影响因子:
11.4
作者:
BOTAS, J;DELPRADO, JM;GARCIABELLIDO, A
通讯作者:
GARCIABELLIDO, A
影响因子:
64.5
作者:
GARRELL, J;MODOLELL, J
通讯作者:
MODOLELL, J