Llgl1 Connects Cell Polarity with Cell-Cell Adhesion in Embryonic Neural Stem Cells.
Llgl1 Connects Cell Polarity with Cell-Cell Adhesion in Embryonic Neural Stem Cells.
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DOI:
10.1016/j.devcel.2017.05.002
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发表时间:
2017-06-05
影响因子:
11.8
通讯作者:
Vasioukhin V
中科院分区:
文献类型:
--
作者:
Jossin Y;Lee M;Klezovitch O;Kon E;Cossard A;Lien WH;Fernandez TE;Cooper JA;Vasioukhin V
Malformations of cerebral cortex (MCC) are devastating developmental disorders. We report here that mice with embryonic neural stem cell-specific deletion of Llgl1 (Nestin-Cre/Llgl1fl/fl), a mammalian ortholog of Drosophila cell polarity gene lgl, exhibit MCC resembling severe periventricular heterotopia (PH). Immunohistochemical analyses and live cortical imaging of PH formation revealed that disruption of apical junctional complexes (AJCs) was responsible for PH in Nestin-Cre/Llgl1fl/fl brains. While it is well known that cell polarity proteins govern the formation of AJCs, the exact mechanisms remain unclear. We show that LLGL1 directly binds to and promotes internalization of N-cadherin, and N-cadherin/LLGL1 interaction is inhibited by aPKC-mediated phosphorylation of LLGL1, restricting the accumulation of AJCs to the basolateral-apical boundary. Disruption of N-cadherin-LLGL1 interaction during cortical development in vivo is sufficient for PH. These findings reveal a mechanism responsible for the physical and functional connection between cell polarity and cell-cell adhesion machineries in mammalian cells.
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影响因子:
64.8
作者:
Dollar, GL;Weber, U;Sokol, SY
通讯作者:
Sokol, SY
影响因子:
64.8
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Knoblich, JA
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16.2
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通讯作者:
Walsh CA
影响因子:
7.1
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通讯作者:
BOSE, TK
影响因子:
4.6
作者:
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通讯作者:
Link, Brian A.