Ectodermal Smad4 and p38 MAPK are functionally redundant in mediating TGF-beta/BMP signaling during tooth and palate development.
Ectodermal Smad4 and p38 MAPK are functionally redundant in mediating TGF-beta/BMP signaling during tooth and palate development.
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DOI:
10.1016/j.devcel.2008.06.004
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发表时间:
2008-08
影响因子:
11.8
通讯作者:
Chai, Yang
中科院分区:
文献类型:
--
作者:
Xu, Xun;Han, Jun;Ito, Yoshihiro;Bringas, Pablo, Jr.;Deng, Chuxia;Chai, Yang
Smad4 is a central intracellular effector of TGF-β signaling. Smad-independent TGF-β pathways, such as those mediated by p38 MAPK, have been identified in cell culture systems, but their in vivo functional mechanisms remain unclear. In this study, we investigated the role of TGF-β signaling in tooth and palate development and noted that conditional inactivation of Smad4 in oral epithelium results in much milder phenotypes than those seen with the corresponding receptor mutants, Bmpr1a and Tgfbr2, respectively. Perturbed p38 function in these tissues likewise has no effect by itself, but that when both Smad4 and p38 functions are compromised, dramatic recapitulation of the receptor mutant phenotypes results. Thus, our study demonstrates that p38 and Smad4 are functionally redundant in mediating TGF-β signaling in diverse contexts during embryonic organogenesis. The ability of epithelium to utilize both pathways illustrates the complicated nature of TGF-β signaling mechanisms in development and disease.
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影响因子:
30.8
作者:
KAARTINEN, V;VONCKEN, JW;GROFFEN, J
通讯作者:
GROFFEN, J
影响因子:
2.5
作者:
Xu, X;Bringas, P;Chai, Y
通讯作者:
Chai, Y
影响因子:
11.2
作者:
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Roberts, AB
影响因子:
2.7
作者:
PELTON, RW;HOGAN, BLM;MOSES, HL
通讯作者:
MOSES, HL
影响因子:
4.6
作者:
Ito, Y;Yeo, JY;Chai, Y
通讯作者:
Chai, Y