Vax1/2 genes counteract Mitf-induced respecification of the retinal pigment epithelium.

Vax1/2 genes counteract Mitf-induced respecification of the retinal pigment epithelium.
复制标题

DOI:
10.1371/journal.pone.0059247
复制
发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Arnheiter H
Arnheiter H
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Ou J;Bharti K;Nodari A;Bertuzzi S;Arnheiter H

文献摘要

参考文献

被引文献

相似文献

在脊椎动物眼睛发育过程中,转录因子MITF起到促进视网膜色素上皮(RPE)发育的作用。在具有Mitf突变的胚胎中,未来的RPE过度增殖并被重新指定为视网膜组织,但仅在背侧RPE的一小部分中。使用一系列的遗传杂交,我们表明,这种空间限制的RPE重新规范所带来的持续表达的抗视网膜腹侧同源结构域基因Vax 2的背侧近端和Vax 1和Vax 2在腹侧RPE。我们进一步表明,Vax 2/Mitf双突变体中的背侧近端RPE重新指定和Vax 1/2/Mitf三突变体中的背侧近端和腹侧RPE重新指定是由于FGF/MAP激酶信号传导增加。然而,在所有突变体中,远端RPE都没有显示过度增殖或重新指定的迹象,这可能是由于局部JAGGED 1/NOTCH信号传导。表达研究和视泡培养实验也表明NOTCH信号传导在突变体背侧RPE结构域中的作用,其中异位JAGGED 1表达可能部分抵消FGF/ERK 1/2信号传导对RPE重新指定的影响。结果表明,在眼睛发育过程中,不同的转录因子和信号分子之间存在复杂的相互作用,并显示了与一个基因突变相关的RPE表型如何受到其他基因表达变化的调节。
During vertebrate eye development, the transcription factor MITF acts to promote the development of the retinal pigment epithelium (RPE). In embryos with Mitf mutations, the future RPE hyperproliferates and is respecified as retinal tissue but only in a small portion of the dorsal RPE. Using a series of genetic crosses, we show that this spatial restriction of RPE respecification is brought about by persistent expression of the anti-retinogenic ventral homeodomain gene Vax2 in the dorso-proximal and both Vax1 and Vax2 in the ventral RPE. We further show that dorso-proximal RPE respecification in Vax2/Mitf double mutants and dorso-proximal and ventral RPE respecification in Vax1/2/Mitf triple mutants result from increased FGF/MAP kinase signaling. In none of the mutants, however, does the distal RPE show signs of hyperproliferation or respecification, likely due to local JAGGED1/NOTCH signaling. Expression studies and optic vesicle culture experiments also suggest a role for NOTCH signaling within the mutant dorsal RPE domains, where ectopic JAGGED1 expression may partially counteract the effects of FGF/ERK1/2 signaling on RPE respecification. The results indicate the presence of complex interplays between distinct transcription factors and signaling molecules during eye development and show how RPE phenotypes associated with mutations in one gene are modulated by expression changes in other genes.
DOI: 10.1016/j.ydbio.2009.07.002
发表时间: 2009-10-01
影响因子: 2.7
作者:
Fujimura, Naoko;Taketo, Makoto M.;Kozmik, Zbynek
通讯作者: Kozmik, Zbynek
DOI: 10.1006/mcne.1996.0040
发表时间: 1996-01-01
影响因子: 3.5
作者:
Lindsell, CE;Boulter, J;Weinmaster, G
通讯作者: Weinmaster, G
DOI: 10.1073/pnas.96.19.10729
发表时间: 1999-09-14
影响因子: 11.1
作者:
Barbieri, AM;Lupo, G;Banfi, S
通讯作者: Banfi, S
DOI: 10.1101/gad.1276605
发表时间: 2005-05-15
影响因子: 10.5
作者:
Mui, SH;Kim, JW;Bertuzzi, S
通讯作者: Bertuzzi, S
DOI: 10.1371/journal.pgen.1002757
发表时间: 2012-07
期刊: PLoS genetics
影响因子: 4.5
作者:
Bharti K;Gasper M;Ou J;Brucato M;Clore-Gronenborn K;Pickel J;Arnheiter H
通讯作者: Arnheiter H