Apoptotic regulation of epithelial cellular extrusion.
Apoptotic regulation of epithelial cellular extrusion.
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DOI:
10.1007/s10495-011-0587-z
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发表时间:
2011-05
期刊:
影响因子:
7.2
通讯作者:
Rosenblatt, Jody
中科院分区:
文献类型:
--
作者:
Andrade, Daniel;Rosenblatt, Jody
Cellular extrusion is a mechanism that removes dying cells from epithelial tissues to prevent compromising their barrier function. Extrusion occurs in all observed epithelia in vivo and can be modeled in vitro by inducing apoptosis in cultured epithelial monolayers. We established that actin and myosin form a ring that contracts in the surrounding cells that drives cellular extrusion. It is not clear, however, if all apoptotic pathways lead to extrusion and how apoptosis and extrusion are molecularly linked. Here, we find that both intrinsic and extrinsic apoptotic pathways activate cellular extrusion. The contraction force that drives cellular extrusion requires caspase activity. Further, necrosis does not trigger the cellular extrusion response, but instead necrotic cells are removed from epithelia by a passive, stochastic movement of epithelial cells.
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DOI:
10.1083/jcb.143.5.1353
发表时间:
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期刊:
The Journal of cell biology
影响因子:
--
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通讯作者:
Nagata S