Concentration-dependent effects of WNTLESS on WNT1/3A signaling.

Concentration-dependent effects of WNTLESS on WNT1/3A signaling.
复制标题

DOI:
10.1002/dvdy.24149
复制
发表时间:
2014-09
期刊:
Developmental dynamics : an official publication of the American Association of Anatomists
影响因子:
--
通讯作者:
Burrus LW
Burrus LW
中科院分区:
其他
文献类型:
--
作者:
Galli LM;Szabo LA;Li L;Htaik YM;Onguka O;Burrus LW

文献摘要

参考文献

被引文献

相似文献

WNTLESS(WLS)是一种多跨膜蛋白,其将Wnt配体从高尔基体转运到细胞表面。虽然在发育中的中枢神经系统中的WLS功能丧失实验揭示了与WNT 1和WNT 3A信号传导缺陷一致的表型,但来自互补功能获得实验的数据尚未报道。在这里,我们报告的表型WLS过度表达的后果在培养的细胞和发育中的鸡脊髓。少量WLS与WNT 1或WNT 3A一起沿着过表达可促进HEK 293 T细胞中的Wnt/β-连环蛋白途径,而较高水平的WLS过表达可抑制这些细胞中的Wnt/β-连环蛋白途径。类似地,过表达的WLS抑制发育中的脊髓中的Wnt/β-连环蛋白途径,如通过细胞增殖和特化所评估的。这些效应似乎是Wnt特异性的,因为WLS的过表达抑制FZD 10的表达,FZD 10是β-连环蛋白依赖性转录的靶标。我们的研究结果表明,WLS的过表达抑制了脊髓中的Wnt/β-catenin信号传导。由于脊髓中Wnt/β-连环蛋白通路的激活需要WNT 1或WNT 3A,因此我们的结果与WLS相对于Wnt的浓度调节发育中脊髓中WNT 1/3A信号传导的模型一致。
WNTLESS (WLS) is a multi-transmembrane protein that transports Wnt ligands from the Golgi to the cell surface. Although WLS loss-of-function experiments in the developing central nervous system reveal phenotypes consistent with defects in WNT1 and WNT3A signaling, data from complementary gain-of-function experiments have not yet been reported. Here, we report the phenotypic consequences of WLS overexpression in cultured cells and in the developing chick spinal cord. Overexpression of small amounts of WLS along with either WNT1 or WNT3A promotes the Wnt/β-catenin pathway in HEK293T cells, while overexpression of higher levels of WLS inhibits the Wnt/β-catenin pathway in these cells. Similarly, overexpressed WLS inhibits the Wnt/β-catenin pathway in the developing spinal cord, as assessed by cell proliferation and specification. These effects appear to be Wnt-specific as overexpression of WLS inhibits the expression of FZD10, a target of β-catenin-dependent transcription. Our results show that overexpression of WLS inhibits Wnt/β-catenin signaling in the spinal cord. As the activation of the Wnt/β-catenin pathway in the spinal cord requires WNT1 or WNT3A, our results are consistent with a model in which the relative concentration of WLS to Wnt regulates WNT1/3A signaling in the developing spinal cord.
DOI: 10.1038/jid.2008.445
发表时间: 2009-07
期刊: The Journal of investigative dermatology
影响因子: --
作者:
Chien AJ;Conrad WH;Moon RT
通讯作者: Moon RT
DOI: 10.1002/dvdy.24123
发表时间: 2014-06
期刊: Developmental dynamics : an official publication of the American Association of Anatomists
影响因子: --
作者:
Galli LM;Munji RN;Chapman SC;Easton A;Li L;Onguka O;Ramahi JS;Suriben R;Szabo LA;Teng C;Tran B;Hannoush RN;Burrus LW
通讯作者: Burrus LW
DOI: 10.1002/dvdy.20621
发表时间: 2006-02-01
影响因子: 2.5
作者:
Fokina, VM;Frolova, EI
通讯作者: Frolova, EI
DOI: 10.1042/bc20070072
发表时间: 2008-03-01
影响因子: 2.7
作者:
Bernard, Pascal;Fleming, Alice;Vilain, Eric
通讯作者: Vilain, Eric
DOI: 10.1016/j.febslet.2011.06.033
发表时间: 2011-08-01
期刊: FEBS LETTERS
影响因子: 3.5
作者:
Gao, Xinxin;Arenas-Ramirez, Natalia;Hannoush, Rami N.
通讯作者: Hannoush, Rami N.