Classical cadherins control nucleus and centrosome position and cell polarity.

Classical cadherins control nucleus and centrosome position and cell polarity.
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DOI:
10.1083/jcb.200812034
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发表时间:
2009-06-01
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Etienne-Manneville S
Etienne-Manneville S
中科院分区:
其他
文献类型:
--
作者:
Dupin I;Camand E;Etienne-Manneville S

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Control of cell polarity is crucial during tissue morphogenesis and renewal, and depends on spatial cues provided by the extracellular environment. Using micropatterned substrates to impose reproducible cell–cell interactions, we show that in the absence of other polarizing cues, cell–cell contacts are the main regulator of nucleus and centrosome positioning, and intracellular polarized organization. In a variety of cell types, including astrocytes, epithelial cells, and endothelial cells, calcium-dependent cadherin-mediated cell–cell interactions induce nucleus and centrosome off-centering toward cell–cell contacts, and promote orientation of the nucleus–centrosome axis toward free cell edges. Nucleus and centrosome off-centering is controlled by N-cadherin through the regulation of cell interactions with the extracellular matrix, whereas the orientation of the nucleus–centrosome axis is determined by the geometry of N-cadherin–mediated contacts. Our results demonstrate that in addition to the specific function of E-cadherin in regulating baso-apical epithelial polarity, classical cadherins control cell polarization in otherwise nonpolarized cells.
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