Distinct apical and basolateral mechanisms drive planar cell polarity-dependent convergent extension of the mouse neural plate.
Distinct apical and basolateral mechanisms drive planar cell polarity-dependent convergent extension of the mouse neural plate.
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DOI:
10.1016/j.devcel.2014.02.007
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发表时间:
2014-04-14
影响因子:
11.8
通讯作者:
Sutherland, Ann
中科院分区:
文献类型:
--
作者:
Williams, Margot;Yen, Weiwei;Lu, Xiaowei;Sutherland, Ann
The mechanisms of tissue convergence and extension (CE) driving axial elongation in mammalian embryos, and in particular, the cellular behaviors underlying CE in the epithelial neural tissue, have not been identified. Here we show that mouse neural cells undergo mediolaterally biased cell intercalation and exhibit both apical boundary rearrangement and polarized basolateral protrusive activity. Planar polarization and coordination of these two cell behaviors is essential for neural CE, as shown by failure of mediolateral intercalation in embryos mutant for two proteins associated with planar cell polarity signaling: Vangl2 and Ptk7. Embryos with mutations in Ptk7 fail to polarize cell behaviors within the plane of the tissue, while Vangl2 mutant embryos maintain tissue polarity and basal protrusive activity, but are deficient in apical neighbor exchange. Neuroepithelial cells in both mutants fail to apically constrict, leading to craniorachischisis. These results reveal a cooperative mechanism for cell rearrangement during epithelial morphogenesis.
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影响因子:
2.7
作者:
FRISTROM, D
通讯作者:
FRISTROM, D
影响因子:
2.7
作者:
Elul, T;Keller, R
通讯作者:
Keller, R
影响因子:
2.7
作者:
HARDIN, J
通讯作者:
HARDIN, J
影响因子:
4.6
作者:
Hong, Elim;Brewster, Rachel
通讯作者:
Brewster, Rachel
DOI:
10.1016/s0165-3806(97)00099-0
发表时间:
1997-09-20
期刊:
DEVELOPMENTAL BRAIN RESEARCH
影响因子:
--
作者:
Gerrelli, D;Copp, AJ
通讯作者:
Copp, AJ