Acheate-scute like 1 (Ascl1) is required for normal delta-like (Dll) gene expression and notch signaling during retinal development.
Acheate-scute like 1 (Ascl1) is required for normal delta-like (Dll) gene expression and notch signaling during retinal development.
复制标题
DOI:
10.1002/dvdy.21848
复制
发表时间:
2009-09
影响因子:
2.5
通讯作者:
Reh, Thomas A.
中科院分区:
文献类型:
--
作者:
Nelson, Branden R.;Hartman, Byron H.;Ray, Catherine A.;Hayashi, Toshinori;Bermingham-McDonogh, Olivia;Reh, Thomas A.
关键词:
Delta gene expression in Drosophila is regulated by proneural bHLH transcription factors, such as acheate-scute. In vertebrates, multiple Delta-like and proneural bHLH genes are expressed during neurogenesis, especially in the retina. We recently uncovered a relationship between Acheate-scute like 1 (Ascl1), Delta-like genes, and Notch in chick retinal progenitors. Here, we report that mammalian retinal progenitors are also the primary source of Delta-like genes, likely signaling through Notch among themselves, while differentiating neurons expressed Jagged2. Ascl1 is co-expressed in Delta-like and Notch active progenitors, and required for normal Delta-like gene expression and Notch signaling. We also reveal a role for Ascl1 in the regulation of Hes6, a pro-neurogenic factor that inhibits Notch signaling to promote neural rather than glial differentiation. Thus, these results suggest a molecular mechanism whereby attenuated Notch levels coupled with reduced proneurogenic activity in progenitors leads to increased gliogenesis and decreased neurogenesis in the Ascl1 deficient retina.
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:
5.3
作者:
Fausett, Blake V.;Gumerson, Jessica D.;Goldman, Daniel
通讯作者:
Goldman, Daniel
影响因子:
25
作者:
Fischer, AJ;Reh, TA
通讯作者:
Reh, TA
影响因子:
2.6
作者:
Cho, Jang-Hyeon;Klein, William H.;Tsai, Kling-Jer
通讯作者:
Tsai, Kling-Jer
影响因子:
2.6
作者:
Beckers, J;Caron, A;Gossler, A
通讯作者:
Gossler, A