Dorsoventral differences in cAMP levels and correlated changes in the subcellular distribution of the PKA catalytic domain, provide further evidence that PKA signaling coordinates dorsoventral patterning of the otocyst.

Dorsoventral differences in cAMP levels and correlated changes in the subcellular distribution of the PKA catalytic domain, provide further evidence that PKA signaling coordinates dorsoventral patterning of the otocyst.
复制标题

DOI:
10.1111/dgd.12543
复制
发表时间:
2018-09
期刊:
Development, growth & differentiation
影响因子:
--
通讯作者:
Schoenwolf GC
Schoenwolf GC
中科院分区:
其他
文献类型:
--
作者:
Ohta S;Schoenwolf GC

文献摘要

参考文献

相似文献

背腹(DV)模式的耳囊引起形成的形态和功能复杂的膜迷路组成的独特的背侧和腹侧的感觉器官。DV模式化是由分泌的生长因子的细胞外信号传导引起的,所述细胞外信号传导可能形成跨越耳囊的DV轴的倒数浓度梯度。以前的工作提出了一个模型,其中两个重要的生长因子,BMP和SHH,通过交叉途径进行串扰,以协调DV图案。cAMP依赖性蛋白激酶A(PKA)位于该途径的中心。在这里,我们提供了进一步的证据,PKA信号协调DV模式,显示BMP和SHH调节cAMP水平,BMP增加背侧耳囊中的水平,SHH降低腹侧耳囊中的水平。这反过来又导致PKA催化结构域亚细胞分布的区域变化,以及DV调节PKA活性,使其背侧增加,腹侧减少。这些新的结果填补了我们以前理解的一个重要空白,即配体信号在耳囊DV模式和早期形态发生过程中如何在细胞内起作用,从而启动了一系列导致内耳感觉器官形成的事件,这些感觉器官在平衡和听力方面发挥作用。
Dorsoventral (DV) patterning of the otocyst gives rise to formation of the morphological and functionally complex membranous labyrinth composed of unique dorsal and ventral sensory organs. DV patterning results from extracellular signaling by secreted growth factors, which presumably form reciprocal concentration gradients across the DV axis of the otocyst. Previous work suggested a model in which two important growth factors, BMP and SHH, undergo crosstalk through an intersecting pathway to coordinate DV patterning. cAMP-dependent protein kinase A (PKA) lies at the heart of this pathway. Here, we provide further evidence that PKA signaling coordinates DV patterning, showing that both BMPs and SHH regulate cAMP levels, with BMPs increasing levels in the dorsal otocyst and SHH decreasing levels in the ventral otocyst. This, in turn, results in regional changes in the subcellular distribution of the catalytic domain of PKA, as well as DV regulation of PKA activity, increasing it dorsally and decreasing it ventrally. These new results fill an important gap in our previous understanding of how ligand signaling acts intracellularly during otocyst DV patterning and early morphogenesis, thereby initiating the series of events leading to formation of the inner ear sensory organs that function in balance and hearing.
DOI: 10.1016/j.gde.2015.02.006
发表时间: 2015-06-01
影响因子: 4
作者:
Whitfield, Tanya T.
通讯作者: Whitfield, Tanya T.
PKA 介导的 Gli2 和 Gli3 磷酸化受到纤毛中 Hedgehog 信号的抑制,并在 Talpid3 突变体中减少
DOI: 10.1016/j.ydbio.2017.06.035
发表时间: 2017-09-01
影响因子: 2.7
作者:
Li J;Wang C;Wu C;Cao T;Xu G;Meng Q;Wang B
通讯作者: Wang B
DOI: 10.1002/wdev.302
发表时间: 2018-01
期刊: Wiley interdisciplinary reviews. Developmental biology
影响因子: --
作者:
Ohta S;Schoenwolf GC
通讯作者: Schoenwolf GC
DOI: 10.1242/dev.070805
发表时间: 2011-11-15
期刊: DEVELOPMENT
影响因子: 4.6
作者:
Tuson, Miquel;He, Mu;Anderson, Kathryn V.
通讯作者: Anderson, Kathryn V.
DOI: 10.1111/joa.12314
发表时间: 2016-02
期刊: Journal of anatomy
影响因子: 2.4
作者:
Basch ML;Brown RM 2nd;Jen HI;Groves AK
通讯作者: Groves AK